1

1.Test 2: Practice Test Summary

PS1-P1x

PS1-P1: HYBRID - CONFIGURATIONS: FUNCTIONAL DESCRIPTION OF HYBRIDS: V3-s10Test 2: Practice Test SummaryPS1: Hybrid Configurations & Efficiencies: P12PS2: Battery Primary Performance Parameters: P11PS3: Ultra-capacitors & Fuel Cell Eds & PDs: P08PS4: Battery Secondary Performance Parameters: P13PS5: Battery Technologies - Compare: P05PS6: Current Developments - Lithium batteries: P23Total: P72 Update 2.4, 3/31/10PS1-REFERENCES:R1: Hybrids1-Configurations.gifR2: Hybrids2-Configurations-and-Efficiecnies.gifR3: Hybrids3-ice-power-vs-rpm.gifMatch the listed descriptions for the following:a- Series-hybrid;b- Full-parallel-hybrid;c- Semi-Parallel-hybridOPTIONS:1- Electric motor and ICE are connected to the drive-train; peak power is supplied by the combination of the electric motor and the ice2- Electric motor and ICE are connected to the drive-train; any one can independently supply the required peak power3- Electric motor is the only one which is connected to the drive-train; Electric motor can independently supply the required peak power

  Student ResponseA. 2; 3; 1B. 1; 2; 3C. 2; 1; 3D. 3; 2; 1E. 1; 3; 2F. 3; 1; 2

Score: 1/1

2. PS1-P4x  PS1-P4: HYBRID - CONFIGURATIONS: V3-S10

a- Pure EV or Battery Electric Vehicle BEV;b- Series-HybridOPTIONS:

1- Requires a ALTERNATOR and a Motor2- Requires a Motor 3- Here off-line battery charging is used4- Here ICE-charges the battery

  Student ResponseA. 2,3; 1,4B. 2,4; 1,3C. 3,4; 1,2D. 1,2; 3,4E. 1,4; 2,3F. 1,3; 2,4

Score: 1/1

3. PS1-P2x

PS1-P2: HYBRID - CONFIGURATIONS: COMPONENTSWhat is "Drive-Train"OPTIONS:1- That connects a vehicle's propulsion system to the battery-pack2- That connects a vehicle's propulsion system to the wheels3- That connects a vehicle's propulsion system to the fuel cell4- That connects a vehicle's propulsion system to the Li-Ion battery-pack5- That connects a vehicle's propulsion system to the ground

  Student ResponseA. 3B. 1C. 5D. 2E. 4

Score: 1/1

4. PS1-P3x  PS1-P3: HYBRID - CONFIGURATIONS: V3-S10

a- Fully-parallel-hybrid;b- Semi-Parallel-hybridOPTIONS:1- Any one, ICE or motor, can be connected to the drive-train to meet vehicle's peak power demand2- Both, ICE and motor, are connected at the same time to the drive-train to meet the peak power demand3- Motor and ICE are 50% smaller in size to that of a standard vehicle

4- Motor and ICE are equal in size to that of a standard vehicle5- ICE-generated-power is never wasted even if full-power is not transmitted to the drive-train6- Part of the ICE-generated-power can be wasted if full-power is not transmitted to the drive-train

  Student ResponseA. 1,4,6; 2,3,5B. 1,3,5; 2,4,6C. 2,3,4; 1,5,6D. 2,4,6; 1,3,5E. 3,4,5; 1,2,6F. 1,3,6; 2,4,5

Score: 1/1

5. PS1-P5x

PS1-P5: HYBRID - CONFIGURATIONS: V3-S10For "Fully-parallel-hybrid" & "Semi-Parallel-hybrid", match the listed items to the following:a- ICE and electric motor are connected to ------;b- ----- is connected to DifferentialOPTIONS:1- Sun gear2- Planetary gear

  Student ResponseA. 2; 2B. 1; 1C. 1; 2D. 2; 1

Score: 1/1

6. PS1-P8n  PS1-P8n: HYBRID - ICE-RPM Vs ICE power generation efficiency

Compute the Peak power utilization factor Fppuf for the listed drive-cycle-3:Pmax = ice-peak power = 100 kw @ 4000 rpmDrive-cycle-3:H1 = 3.0 hrs; RPM1 = 1500; Epg1_1500 = 0.15H2 = 0.5 hrs; RPM_idling; Epg2_idling = 0.0H3 = 1.0 hrs; RPM3 = 6000; Epg3_6000 = 0.10OPTIONS:1- 0.10

2- 0.203- 0.304- 0.405- 0.506- 0.60

  Student ResponseA. 1B. 2C. 3D. 4E. 5F. 6

Score: 2/2

7. PS1-P11n  PS1-P11n: HYBRID - CONFIGURATIONS & EFFICIENCIES

Compute the overall efficiency of the following "Full-Parallel-Hybrid-Vehicle FPHV" Ephv:ICE percentage share-time factor between the drive train and the generator = Ft1 = 0.80; Ft2 = 0.20 Fppuf, peak power utilization factor while ICE is connected to the drive-train (Mode_dt) = 0.6Erpm = Efficiency of mechanical power generation at non-peak rpm (ICE operating at 2000 rpm) = 0.6 Futil= Utilization factor (only 40% of mechanical power is transmitted to TX, rest wasted) = 0.5 Egen = generator efficiency = 0.30 (30%)Emot = Electric Motor-controller efficiency = 0.90 (90%) Eice = Efficiency of the ice (chemical-to-mechanical) = 0.40OPTIONS:1- 0.12- 0.33- 0.54- 0.75- 0.9

  Student ResponseA. 1B. 2C. 3D. 4E. 5

Score: 2/2

8. PS1-P6n

PS1-P6n: HYBRID - ICE-RPM Vs ICE power generation efficiencyCompute peak power utilization factor Fppuf for the listed drive-cycle-1:Pmax = ICE peak power @ 4000 rpm = 100 kwDrive-cycle-1:H1 = Running hours = 5 hrs; RPM1 = Average running Operating rpm = 2500 rpm;Epg2500 = Power generation efficiency @ 2500 rpm = 0.32 OPTIONS:1- 0.102- 0.203- 0.304- 0.405- 0.506- 0.60

  Student ResponseA. 1B. 2C. 3D. 4E. 5F. 6

Score: 2/2

9. PS1-P10n  PS1-P10n: HYBRID - CONFIGURATIONS & EFFICIENCIES

Compute the overall efficiency of a "Series Hybrid Vehicle SHV" Eshv:Given:Egen = The generator or the alternator efficiency = 0.30Emot = Motor efficiency = 0.94 Ectrl = controller efficiency = 0.96

OPTIONS:1- 0.12- 0.33- 0.54- 0.75- 0.9

  Student ResponseA. 1

B. 2C. 3D. 4E. 5

Score: 2/2

10.

PS1-P9n

PS1-P9n: HYBRID - CONFIGURATIONS & EFFICIENCIES: V3-s10 Compute the overall efficiency of a pure EV (battery electric vehicle) Ebev with the following specifications:Emot = Motor efficiency = 0.95Ectrl = Controller efficiency = 0.97OPTIONS:1- 0.902- 0.923- 0.944- 0.965- 0.98

  Student ResponseA. 1B. 2C. 3D. 4E. 5

Score: 2/2

11.

PS1-P7n

  PS1-P7n: HYBRID - ICE-RPM Vs ICE power generation efficiencyCompute the Peak power utilization factor Fppuf for the listed drive-cycle-2:Pmax = ICE peak power = 100 kw @ 4000 rpmDrive-cycle-2:H1 = 3.0 hrs; RPM1 = 1500; Epg1_1500 = 0.15H2 = 2.0 hrs; RPM2 = 4000; Epg2_4000 = 1.00H3 = 1.0 hrs; RPM3 = 6000; Epg3_6000 = 0.10OPTIONS:1- 0.102- 0.20

3- 0.304- 0.405- 0.506- 0.60

  Student ResponseA. 1B. 2C. 3D. 4E. 5F. 6

Score: 2/2

12.

PS1-P12n

PS1-P12n: HYBRID - CONFIGURATIONS & EFFICIENCIESCompute the efficiency of the following "Series-Parallel Hybrid or Semi-Parallel Hybrid Vehicle SPHV" Esph as compared to a "Full-parallel-hybrid-vehicle":Fppuf, peak power utilization factor while ICE is connected to the drive-train (Mode_dt) = 0.6Egen = generator efficiency = 0.30 (30%)Emot = Electric Motor-controller efficiency = 0.90 (90%) Eice = Efficiency of ice (chemical-to-mechanical) = 0.40OPTIONS:1- 0.202- 0.303- 0.404- 0.505- 0.606- 0.70

  Student ResponseA. 1B. 2C. 3D. 4E. 5F. 6

Score: 2/2

13 PS2-P4x

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PS2-P4: Ev-hev-fcev battery's primary performance requirements: V3-S10 Batteries: For the listed applications, identify which of the following densities should be high:a- Power density; b- Energy DensityOPTIONS:1- Good acceleration2- To carry heavy loads3- Long hill-climbs4- Quick starts5- Short hill-climbs6- Large mileage range

  Student ResponseA. 1,2,4; 3,5,6B. 2,4,5; 1,3,6C. 1,3,4; 2,5,6D. 1,4,5; 2,3,6E. 3,5,6; 1,2,4

Score: 1/1

14.

PS2-P5x

PS2-P5: Ev-hev-fcev battery's primary performance requirements: V3-S10 Batteries: For any Electric Vehicle, you would like to have batteries with:OPTIONS:1- Low power density2- High power density3- Low energy density4- High energy density5- Low volumetric density6- High volumetric density

  Student ResponseA. 1; 3; 6B. 2; 4; 6C. 2; 3; 6D. 1; 4; 5E. 2; 3; 5

Score: 1/1

15.

PS2-P10n

PS2-P10n: Ev-hev-fcev battery's primary performance requirements: V3-S10 Compute the energy density, in wh/kg, for the following battery:Trojan T105: SLAvoltage: 6vamp-hrs: 225 ahweight: 28 kgOPTIONS:1- 10 wh/kg2- 20 wh/kg3- 30 wh/kg4- 40 wh/kg5- 50 wh/kg6- 60 wh/kg

  Student ResponseA. 1B. 2C. 3D. 4E. 5F. 6

Score: 1/1

16.

PS2-P2x

  PS2-P3: Ev-hev-fcev battery's primary performance requirements: V3-S10 What are the desired values for the following:a- What is the desired maximum vehicle weight;b- What is the desired maximum volume;c- What is the desired maximum costOPTIONS:1- (1/2) the weight of the vehicle2- (1/3) the weight of the vehicle3- Size of the trunk4- Size of the gas-tank5- (1/2) the cost of the vehicle6- (1/3) the cost of the vehicle

  Student ResponseA. 1; 3; 5B. 2; 4; 6

C. 2; 3; 6D. 2; 4; 5E. 2; 3; 5

Score: 1/1

17.

PS2-P9n

PS2-P9n: Ev-hev-fcev battery's primary performance requirements: BATTERIES: Capacitors/Super capacitors:Compute energy that it can be stored on the following super capacitor, in wh?Super capacitor specifications:C= 3000 FV= 2.7 volts

  Student ResponseA. 1.0 whB. 2.0 whC. 3.0 whD. 4.0 whE. 5.0 kwh

Score: 1/1

18.

PS2-P3x

  PS2-P3: Ev-hev-fcev battery's primary performance requirements: V3-s10 Batteries: Match the listed descriptions for the following:a- Power density; b- Energy density;c- Volumetric densityOPTIONS:1- For sustained supply of energy2- Battery with quick chemical reaction will have this density high3- Energy for long distances4- Quick release of energy5- So that battery pack is not too large to fit into the car6- So that battery pack to be able to fit into restricted space

  Student ResponseA. 1,2; 3,4; 5, 6B. 2,3; 1,4; 5, 6C. 2,4; 1,3; 5, 6

D. 1,3; 2,4; 5, 6E. 3,4; 1,2; 5, 6

Score: 1/1

19.

PS2-P6x

PS2-P6: Ev-hev-fcev battery's primary performance requirements: V3-S10 Batteries: For the following rechargeable batteries, average Energy Densities, in wh/kg, are:a- Super-capacitors;b- Lead Acid;c- NiMH;d- Li-IonOPTIONS:1- 5 wh/kg2- 40 wh/kg3- 80 wh/kg4- 160 wh/kg5- 320 wh/kg6- 640 wh/kg7- 1280 wh/kg

  Student ResponseA. 2; 3; 4; 5B. 3; 4; 5; 6C. 5; 6; 7; 7D. 1; 2; 3; 4E. 4; 5; 6; 7

Score: 1/1

20.

PS2-P1x

  PS2-P1: Ev-hev-fcev battery's primary performance requirements: V3-S10 Batteries: Match the listed descriptions for the following:a- Power density; b- Energy density;c- Volumetric density;d- Cost densityOPTIONS:1- wh/kg2- w/kg

3- wh/$4- wh/lit

  Student ResponseA. 1; 2; 3; 4B. 2; 1; 4; 3C. 1; 2; 4; 3D. 2; 1; 3; 4E. 3; 4; 1; 2

Score: 1/1

21.

PS2-P7x

PS2-P7: Ev-hev-fcev battery's primary performance requirements: V3-10 Batteries: Match the power density characteristics for the following type of storage devices:a- Power density of: Super-capacitors;b- Power density of: Li-Ion;c- Power density of: NiMH;d- Power density of: Lead AcidOPTION1:1- a > b > c > d2- a < b < c < d3- a = b = c = d

  Student ResponseA. 3B. 1C. 2

Score: 1/1

22.

PS2-P8x

  PS2-P8: Ev-hev-fcev battery's primary performance requirements: V3-S10 Match the listed synonyms to the following:a- Energy density (ED);b- Power density (PD);c- Volumetric energy density (VD)OPTIONS:1- Specific power (SP)2- Specific energy (SE)/Gravimetric Energy Density3- To fit into the restricted space

4- wh kg-15- wh lit-16- w kg-1

  Student ResponseA. 3,6; 2,4; 1,5B. 2,5; 1,4 3,6C. 1,4; 2,5; 3,6D. 3,4; 2,5; 1,6E. 2,4; 1,6; 3,5

Score: 1/1

23.

PS2-P11n

PS2-P11n: Ev-hev-fcev battery's primary performance requirements: V3-S10 Compute the volumetric density, in wh/liter, for the following battery:Trojan T105: SLAvoltage: 6vamp-hrs: 225 ahsize cm3: 26.4 cm x 18.1 cm x 27.6 cmNote: 1000 cm3 = 1 literOPTIONS:1- 20 wh/lit2- 40 wh/lit3- 60 wh/lit4- 80 wh/lit5- 100 wh/lit6- 120 wh/lit

  Student ResponseA. 1B. 2C. 3D. 4E. 5F. 6

Score: 1/1

24.

PS3-P4n

  PS3-P4n: Super-capacitors or Ultra-capacitors: v3

Find the size of a super-capacitor cell-stack that is suitable for an automotive application to give power boost for TWO-miles.Given:Power consumption = 0.22 wh/mile/kgCell voltage of the individual super capacitor = 3.0 voltsWorking voltage (series-cell-stack) = 120 V DCacceleration-distance = 2 milesCar weight = 1200 kgDesign the "super-capacitor-series-cell-stack" or simply cell-stack: a- The number of cells N; b- Size of each cell C, in farads OPTION a:1- 402- 503- 60OPTION b:4- 1k F5- 5k F6- 10k F

  Student ResponseA. 1; 4B. 1; 5C. 1; 6D. 2; 5E. 3; 6

Score: 1/1

25.

PS15-P7n

  PS3-P7n: Super-capacitors OR Ultra-capacitors: v3SUPERCAPACITORS: CHARGE CAPACITYFind how much energy, in percentage, a 2.8 volt/3000F super-capacitor can store compared to a 2.3V/3000F super-capacitor?OPTIONS:1- 5%2- 10%3- 30%4- 50%5- 70%

  Student ResponseA. 1B. 2

C. 3D. 4E. 5

Score: 1/1

26.

PS3-P1x

PS3-P1: Super-capacitors or Ultra-capacitors: V3SUPERCAPACITORS: Identify if the following statements relating to the super capacitor or ultra-capacitor are True T or False F?a- Have extremely low surface areas;b- Have extremely thin electrolyte (dielectric medium);c- Have capacitance of the order of micro-farads;d- Very suitable for power boost for short time-period;e- Ideal for absorbing energy generated from regenerative braking in EVs

  Student ResponseA. T; F; F; T; TB. F; T; F; T; TC. T; F; T; T; TD. F; F; T; F; FE. F; T; T: T; F

Score: 1/1

27.

PS3-P3x

  PS3-P3: ULTRACAPACITORS: ED & PDs: v3SUPERCAPACITORS: Match the listed "typical super capacitors values" to the following parameters:a- Surface area A;b- Dielectric thickness d;OPTIONS a:1- 100s of square meters per gram2- 1000s of square meters per gramOPTIONS b:3- Fraction of a nano-meter (of the order of 0.1 nm)4- Fraction of a micro-meter (of the order of 0.1 micro-meter)

  Student ResponseA. 1; 3B. 1; 4

C. 2; 3D. 2; 4E. 2; 3

Score: 1/1

28.

PS3-P8n

PS3-P8n: Ultra-capacitors & Fuel Cells: V3Compute the following for the listed fuel cell system:a- Total energy capacity, in kwh;b- Energy Density ED, in kwh/kgFUEL CELL:Fuelcellstore.com: Fuel Cell H5000Wattage = 5000 WattsFuel Cell weight = 17 kgFuel consumption = 84L @8 psi/minCost = $15,000Volume = 28 LitersCOMPRESSED HYDROGEN STORAGE TANK: EC180Pressure = 7200 psiWeight = 45 kgVolume = 80 litersOPTIONS: a1- 50 kwh2- 60 kwh3- 70 kwhOPTIONS: b4- 0.5 kwh/kg5- 1.0 kwh/kg6- 1.5 kwh/kg

  Student ResponseA. 1; 4B. 2; 5C. 3; 4D. 3; 6E. 3; 5

Score: 1/1

29.

PS3-P6n

PS3-P6n: Super-capacitors SC or Ultra-capacitors UC: V3Compute the Power Density, in W/kg, for the followingsuper-capacitor BCAP3000: Maxwell (maxwell.com)1- BCAP3000: Single cell2- Capacitance, in Farads F: 3000 Farads3- Individual Cell voltage V: 2.7 volts4- Cell weight W, in kg: 0.51 kg5- DC-resistance Rdc: 0.29 milli-ohmsNote: Power density, watts/kg, for an Ultra-capacitor is given by:PD = 0.12 * W * V^2 / Rdc; where W in kg, Rdc in ohms, and V in voltsOPTIONS:1- 500 w/kg2- 1000 w/kg3- 1500 w/kg4- 2000 w/kg5- 2500 w/kg

  Student ResponseA. 1B. 2C. 3D. 4E. 5

Score: 1/1

30.

PS3-P2x

  PS15-P2: Super-capacitors OR Ultra-capacitors: V3SUPERCAPACITORS: Match the listed "typical super capacitors values" to the following parameters:a- Energy Density ED;b- Power Density PD;c- Capacitance C;d- Cell voltage VOPTIONS a:1- 5 Wh/kg2- 1.5 kWh/kgOPTIONS b:3- 5 W/Kg4- 1.5 kW/kgOPTIONS c:5- 100s of farads6- 1000s of farads

OPTIONS d:7- 2.3-to-3.0 volts8- 0.6-to-0.9 volts

  Student ResponseA. 1; 4; 6; 7B. 2; 4; 6; 8C. 1; 4; 6; 8D. 1; 3; 5; 7E. 1; 4; 5; 7

Score: 1/1

31.

PS3-P5n

  PS3-P5n: Super-capacitors OR Ultra-capacitors: V3AUTOMOTIVE SUPERCAPACITORS: Compute the following for the listed automotive super-capacitor (BMOD2600-96):a- Total energy capacity, in wh;b- Energy Density ED, in wh/kgMaxwell (maxwell.com): BMOD2600-96 automotive super-capacitor module1- Number of capacitors in series N = 362- Capacitance of the module Cmod Cmod = 2600/36 = 72.22 = 72 F3- Individual Cell voltage V 2.74- Total module voltage (2.7*36) 97.2 V = 96 V5- module weight, in kg Wmod = 26 kg Volume in Liter-cube 13.4 liter3 6- Size (Length/Width/Thickness, in m) 0.42m/0.16m/0.20mOPTIONS a:1- 25-50 Wh2- 50-75 Wh3- 75-100 WhOPTIONS b:4- 1 Wh/kg5- 5 Wh/kg6- 10 h/kg

  Student ResponseA. 1; 4B. 2; 5C. 3; 4D. 3; 6E. 3; 5

Score: 1/1

32.

PS4-P4x

PS4-P4: Batteries -- Secondary performance parameters (spp): V3-S10BATTERIES - SECONDARY PERFORMANCE PARAMETERS: Match the listed descriptions to the following:a- Cell-discharge-curves; b- Cell-Performance-Vs-Temperature characteristic;c- Cell-Internal-Impedance-Vs-Temperature characteristic;OPTIONS:1- For a bad battery-cell, cell-voltage decreases as it gets discharged2- For a bad battery-cell, cell-voltage increases as it gets discharged3- In most cases, battery performance degrades as temperature falls4- In most cases, battery performance improves as temperature falls5- Battery's internal impedance increases with decreasing temperature6- Battery's internal impedance decreases with decreasing temperature

  Student ResponseA. 2; 4; 6

F; 2; 3; 5B. 1; 3; 5C. 1; 4; 5D. 1; 3; 6E. 1; 4; 6

Score: 1/1

33.

PS4-P11n

  PS4-P11n: Batteries -- Secondary performance parameters (spp): V3-S10DISCHARGE RATES & PEUKERT EQUATIONFor the battery with the following specifications:Initial battery capacity E0_in_kwh = 25 kwh;Battery characteristic Peukert number n = 1.3Battery pack voltage = 100 VDCCompute the amount of energy, in kwh, that remains in the battery (State of Charge SOC) pack after the following discharges:a- Discharge1: 100 amps for 0.5 hours;b- Discharge2: 200 amps for 0.25 hoursAssume initial capacity is 25 kwh in both cases.Also assume that the battery pack voltage is constant throughout the discharge cycle at 100 VDC.OPTIONS:

1- 1 kwh2- 5 kwh3- 10 kwh4- 15 kwh5- 20 kwh

  Student ResponseA. 2; 4B. 1; 3C. 5; 3D. 2; 1E. 4; 2

Score: 1/1

34.

PS4-P8x

PS4-P8: Batteries -- Secondary performance parameters (spp): V3-S10DISCHARGE RATES & PEUKERT EQUATION: Match the listed descriptions to the following:A battery that has:a- Peukert number n = 1.0;b- Peukert number n = 1.2;c- Peukert number n = 1.5OPTIONS:1- Battery with worst performance characteristics2- Ideal battery with no losses of any kind3- Battery with average performance characteristics

  Student ResponseA. 3; 1; 2B. 2; 1; 3C. 1; 3; 2D. 2; 3; 1E. 1; 2; 3

Score: 1/1

35.

PS4-P7x

  PS4-P7: Batteries -- Secondary performance parameters (spp)Match the listed descriptions to the following:a- Cycle Life b- Depth of Discharge (DoD)

OPTIONS: a1- The cycle life is defined as the number of cycles a cell can perform before its capacity drops to 80% of its initial specified capacity-2- The cycle life is defined as the number of cycles a cell can perform before its capacity drops to 50% of its initial specified capacity-OPTINS: b3- The number of cycles yielded by a battery goes down exponentially, if you discharge the battery only a little - to a very low-level of DOD4- The number of cycles yielded by a battery goes down exponentially, if you discharge the battery fully - to a higher-level of DOD

  Student ResponseA. 2; 3B. 1; 4C. 1; 3D. 2; 4

Score: 1/1

36.

PS4-P3x

  PS4-P3: Batteries -- Secondary performance parameters (spp): V3-S10BATTERY DISCHAGE RATE C: Match the listed descriptions to the following:a- High-discharge rate means;b- SAE-standard battery discharge rate: format 1;c- SAE-standard battery discharge rate: format 2OPTIONS: a1- High currents2- Low currentsOPTIONS: b4- 0.50C5- 0.05C6- 0.20COPTIONS: c7- C/58- C/29- C/20

  Student ResponseA. 2; 6; 8B. 1; 5; 9C. 1; 5; 8D. 2; 4; 9E. 1; 5; 7

Score: 1/1

37.

PS4-P9x

PS4-P9: Batteries -- Secondary performance parameters (spp): V3-S10RAGONE PLOTS: Select all that applyOPTIONS:1- Energy density decreases with increasing power density2- Energy density increases with increasing power density3- Energy density decreases at higher discharge rates4- Energy density increases at higher discharge rates5- Energy density decrease at higher discharge rates is more dominant in batteries with higher Peukert number n6- Energy density decrease at higher discharge rates is more dominant in batteries with lower Peukert number n

  Student ResponseA. 1; 4; 5B. 1; 4; 6C. 2; 4; 6D. 2; 3; 5E. 1; 3; 6F. 1; 3; 5

Score: 1/1

38.

PS4-P12n

  PS4-P12n: Batteries -- Secondary performance parameters (spp): V3-S10DISCHARGE RATES & PEUKERT EQUATION & RAGONE PLOTSFind the energy density, in wh/kg, of the following battery at the specified discharge rates: Initial battery capacity E0_in_ah = 10 ah;Battery voltage = 12 vdcPeukert exponent = 1.3Weight = 4 kgAssume that the battery pack voltage is constant throughout the discharge cycle.a- Find energy density, in wh/kg, at 0.1C-discharge-rate;b- Find energy density, in wh/kg, at 1C-discharge-rate;c- Find energy density, in wh/kg, at 10C-discharge-rateOPTIONS:1- 3.75 wh/kg2- 7.50 wh/kg3- 15.0 wh/kg

4- 20.0 wh/kg5- 25.0 wh/kg6- 30.0 wh/kg

  Student ResponseA. 5; 3; 1B. 6; 4; 2C. 5; 3; 1D. 5; 3; 2E. 6; 3; 1F. 6; 3; 2

Score: 0/1

39.

PS4-P6x

PS4-P6: Batteries -- Secondary performance parameters (spp): V3-S10Match the listed descriptions to the following:a- Peukert Equation;b- Ragone PlotsOPTIONS: 1- Gives energy consumed in one hour, in ah, for a given discharge current I and for a given battery Peukert exponent n2- Gives energy consumed in one hour, in wh, for a given discharge voltage V and for a given battery Peukert exponent n3- It is a discharge-rate vs energy density; it shows that at higher discharge rates the energy density decreases4- It is a discharge-rate vs energy density; it shows that at higher discharge rates the energy density increases

  Student ResponseA. 1; 4B. 2; 3C. 1; 3D. 2; 4

Score: 1/1

40.

PS4-P2x

  PS4-P2: Batteries -- Secondary performance parameters (spp): V3-S10BATTERY DISCHAGE RATE C: Match the listed descriptions to the following:For a "10-ah" battery:a- 0.05C discharge refers to;

b- 0.1C discharge refers to;c- 1C discharge refers to;d- 20C discharge refers toOPTIONS:1- Discharging current at 0.5 amp2- Discharging current at 1 amp3- Discharging current at 5 amp4- Discharging current at 10 amp5- Discharging current at 20 amp6- Discharging current at 200 amp

  Student ResponseA. 1; 2; 4; 6B. 3; 4; 5; 6C. 1; 2; 5; 6D. 3; 4; 6; 5E. 1; 3; 4; 6

Score: 1/1

41.

PS4-P1x

  PS4-P1: Batteries -- Secondary performance parameters (spp): V3-S10BATTERIES - SECONDARY PERFORMANCE PARAMETERS: Identify the secondary performance parameters of the batteries:REFERENCES: Spring 2010: DocumentsR1-to-R7: Battery-SPP0-SPP1-SPP2-SPP3-SPP4-SPP5-SPP6-SPP7.gifR8: Battery-SPP8.xlsOPTIONS:1- Cell-discharge-curves 2- Cell-performance Vs Temperature3- Energy density4- Internal impedance5- Self discharge6- Peukert Equation7- Ragone Plots8- Cycle Life 9- Depth of Discharge10- Power density11- Memory effect

  Student ResponseA. 1,2,3,5,6,7,8,9,11B. 1,2,4,5,6,7,8,9,11C. 1,2,3,4,5,6,7,9,10

D. 1,2,3,4,5,6,7,8,10E. 1,2,3,5,6,7,8,9,11

Score: 1/1

42.

PS4-P5x

PS4-P5: Batteries -- Secondary performance parameters (spp): V3-S10BATTERIES - SECONDARY PERFORMANCE PARAMETERS: Match the listed descriptions to the following:Cell-Self-Discharge: Select all that are TrueOPTIONS:1- A battery cell's self-discharge increases with increasing-temperature2- A battery cell's self-discharge decreases with increasing-temperature3- A measure of how quickly the cell looses the energy4- A measure of how quickly the cell gains the energy

  Student ResponseA. 2; 3B. 1; 4C. 2; 4D. 1; 3

Score: 1/1

43.

PS4-P10x

  PS4-P10: Batteries -- Secondary performance parameters (spp): v3-S10MEMORY EFFECT: What is memory effect (or Voltage Depression)?OPTIONS:1- In a battery cell with memory effect, if most of the previous DoDs were 70%; then the current cycle DoD cannot be lower than 70%.2- In a battery cell with memory effect, if most of the previous DoDs were 70%; then the current cycle DoD cannot be lower than 30%.3- In a battery cell with memory effect, if most of the previous DoDs were 30%; then the current cycle DoD cannot be lower than 70%.4- In a battery cell with memory effect, if most of the previous DoDs were 30%; then the current cycle DoD cannot be lower than 30%.

  Student ResponseA. 1; 3B. 2; 4C. 1; 4D. 2; 3

Score: 1/1

44.

PS4-P13n

PS4-P13n: Batteries -- Secondary performance parameters (spp): V3-S10DISCHARGE RATES & PEUKERT EQUATION & RAGONE PLOTSDetermine the amount of energy depleted, in ah, from the following two battery systems in 2-hours at the same discharge rate of 50-amps.a- Lead acid battery with Peukert expent of 1.3;b- Lithium-Ion battery with Peukert expent of 1.05OPTIONS:1- 50 ah2- 100 ah3- 150 ah4- 200 ah5- 250 ah6- 300 ah

  Student ResponseA. 6; 3B. 5; 2C. 4; 1D. 6; 2E. 6; 1F. 5; 1

Score: 0/1

45.

PS5-P5n

  PS5-P5n: Batteries for electric vehicles: V3-S10BATTERIES FOR ELECTRIC VEHICLES:For car that consumes 0.20 kwh/mile with a mileage requirement of 100 miles, compute cost of the following battery packs:a- Lead-Acid battery pack;b- Li-polymer battery packAssume:Cost of Lead-acid battery technology is: $100 / kwhCost of Li-polymer battery technology is: $1,000 / kwhOPTIONS:1- $1k2- $2k3- $10k

4- $20k

  Student ResponseA. 1; 3B. 1; 4C. 2; 3D. 2; 4

Score: 1/1

46.

PS5-P3x

PS5-P3: Batteries for electric vehicles: V3-S10BATTERIES FOR ELECTRIC VEHICLESa- The battery technology that requires minimal charging time of about 3 hours;b- The battery technology that requires maximum charging time of about 8 hoursOPTIONS:1- Pb-Acid2- NiMH3- Li-Ion

  Student ResponseA. 3; 1B. 1; 2C. 2; 3D. 3; 2E. 1; 3F. 2; 1

Score: 0/1

47.

PS5-P4x

  PS5-P4: Batteries for electric vehiclesBATTERIES FOR ELECTRIC VEHICLES:For a two battery electric vehicle match the listed descriptions to the following:a- Mileageb- Accelerationc- Acceleration-durationd- Size of the electric motor, in kWOPTIONS:1- Primary battery: Energy Density: ED12- Primary battery: Power Density: PD13- Secondary (peak-power) battery: Energy Density: ED2

4- Secondary (peak-power) battery: Power Density: PD2Note: At start, when maximum power is drawn, the primary battery is cut-off

  Student ResponseA. 1; 4; 4; 3B. 4; 1; 2; 3C. 2; 4; 1; 2D. 1; 3; 4; 3E. 1; 4; 3; 4

Score: 1/1

48.

PS6-P13n

PS6-P13n: LITHIUM-BATTERIES: Compare Lithium-cells: Computing-Technology-MetricThe following lithium battery technologies have the listed characteristics:Battery-Technolgy1: Cost = 5.0; Temperature range = 3.0; Cycle life = 2.0Battery-Technolgy2: Cost = 3.0; Temperature range = 4.0; Cycle life = 5.0Battery-Technolgy3: Cost = 4.0; Temperature range = 5.0; Cycle life = 3.0ASSUME 5.0 considered the BEST; and 1.0 the WORST.If Cost, Temperature range, and Cycle life are the only considered for selection of the battery technology; which is considered the best battery technology?Assume: cost factors have equal weightages; 5.0 considered the best and 1.0 the worst.OPTIONS:1- Battery-Technolgy12- Battery-Technolgy23- Battery-Technolgy3

  Student ResponseA. 1B. 2C. 3

Score: 2/2

49.

PS6-P16n

  PS6-P16n: LITHIUM-BATTERIES: Current StatusGM-Chevy-Volt has the following Lithium-battery-pack:Total energy content = 16 kwhMileage = 40 miles per chargeVehicle weight = 1600 kga- compute vehicle energy consumption constant Ec1, in wh mile-1 kg-1

b- compute vehicle energy consumption constant Ec2, in wh mile-1 lb-1Note:wh mile-1 kg-1: energy consumption in watt-hours per mile per kgwh mile-1 lb-1: energy consumption in watt-hours per mile per poundOPTIONS:1- 0.1 wh mile-1 kg-12- 0.2 wh mile-1 kg-13- 0.4 wh mile-1 kg-14- 0.6 wh mile-1 kg-15- 0.8 wh mile-1 kg-16- 0.05 wh mile-1 lb-17- 0.1 wh mile-1 lb-18- 0.2 wh mile-1 lb-19- 0.3 wh mile-1 lb-110- 0.4 wh mile-1 lb-1

  Student ResponseA. 1; 6B. 2; 7C. 3; 8D. 4; 9E. 5; 10

Score: 2/2

50.

PS6-P9x

  PS6-P9: LITHIUM-BATTERIES: anode/cathode/electrolyte materialsCathode materials: compared with other lithium-based-cells, LiFePO4-cell has the following characteristics: Select all that applyOPTIONS:1- It has the lowest cell voltage2- It has the highest cell voltage3- It has almost the highest energy density4- It has almost the lowest energy density5- It is one the least safe cell6- It is one the safest cell

  Student ResponseA. 1; 3; 5B. 1; 3; 6C. 2; 3; 5D. 1; 4; 5E. 1; 4; 6F. 2; 3; 6

Score: 2/2

51.

PS6-P14n

PS6-P14n: LITHIUM-BATTERIES: Compare Lithium-cells: Computing-Technology-MetricThe following lithium battery technologies have the listed characteristics:Battery-Technolgy4: Cost = 2.0; Energy density = 4.0; Cycle life = 4.0Battery-Technolgy5: Cost = 4.0; Energy density = 3.0; Cycle life = 3.0Battery-Technolgy6: Cost = 5.0; Energy density = 2.0; Cycle life = 1.0ASSUME 5.0 considered the BEST; and 1.0 the WORST.If:Cost: 5.0 = cost per kwh = $500/kwhEnergy Density: 5.0 = wh per kg = 300 wh/kgCycle life 5.0: Number of charge discharge cycles = 2000 cyclesa- Find "Cost" of Battery-Technolgy4;b- Find "Energy Density" of Battery-Technolgy5;c- Find "Cycle life" of Battery-Technolgy6OPTIONS:1- $500/kwh2- $1000/kwh3- $2000/kwh4- 100 wh/kg5- 200 wh/kg6- 300 wh/kg7- 200 cycles8- 500 cycles9- 1000 cycles

  Student ResponseA. 1; 4; 7B. 2; 5; 8C. 3; 6; 9D. 1; 5; 8E. 2; 5; 7

Score: 2/2

52.

PS6-P10x

  PS6-P10: LITHIUM-BATTERIES: anode/cathode/electrolyte materialsAnode materials: identify anode material that is not toxic and good for the environment.OPTIONS:

1- Fe2- Ni3- Co4- Cd5- Pb

  Student ResponseA. 3B. 5C. 2D. 1E. 4

Score: 2/2

53.

PS6-P11x

PS6-P11: LITHIUM-BATTERIES: Compare Lithium-cells: Computing-Technology-MetricMatch the listed descriptions for the following:a- Battery cycle life;b- Battery shelf life;c- Battery calendar lifeOPTIONS:1- is the elapsed time before a battery becomes unusable whether it is in active use or inactive as above.2- is defined as the number of complete charge - discharge cycles a battery can perform before its nominal capacity falls below 80% of its initial rated capacity.3- is the time an inactive battery can be stored before it becomes unusable, usually considered as having only 80% of its initial capacity as above

  Student ResponseA. 3; 2; 1B. 1; 3; 2C. 2; 3; 1D. 1; 2; 3E. 2; 1; 3F. 3; 1; 2

Score: 2/2

54.

PS6-P12x

PS6-P12: LITHIUM-BATTERIES: Compare Lithium-cells: Computing-Technology-MetricWhat is safety issue in Lithium-batteries: Select all that applyOPTIONS:1- Costing too much money to buy it2- Suffering from thermal runaway and cell rupture if overheated or if charged to an excessively high voltage. 3- Having too low energy density4- Irreversible damage if discharged below a certain voltage.5- Having too low power density

  Student ResponseA. 1; 2B. 2; 3C. 1; 4D. 2; 4E. 2; 5F. 1; 3

Score: 2/2

55.

PS6-P2x

PS6-P2: LITHIUM-BATTERIES: Basic Cell OperationThe function of Electrolyte (or separator) in a Li-Ion battery is:It is an Ionic-conductor that lets:OPTIONS:1- Ni+ to go through but blocks electron e-2- Mn+ to go through but blocks electron e-3- Co+ to go through but blocks electron e-4- N-Mn-Co-alloy+ to go through but blocks electron e-5- Li+ to go through but blocks electron e-

  Student ResponseA. 4B. 5C. 3D. 2E. 1

Score: 2/2

56.

PS6-P3x

PS6-P3: LITHIUM-BATTERIES: Basic Cell OperationCharge and discharge states: For a LiFePO4 battery, Match the listed descriptions for the following:a- anode and cathode when battery is in fully-charged stateb- anode and cathode when battery is in fully-discharged state;OPTIONS:1- anode/cathode: C6/LiFePO42- anode/cathode: C6/Li1-xFePO43- anode/cathode: LiC6/Li1-xFePO44- anode/cathode: LiC6/LiFePO4

  Student ResponseA. 1' 4B. 3; 1C. 3; 2D. 2; 3E. 1; 2F. 1; 3

Score: 2/2

57.

PS6-P19x

PS6-P19: LITHIUM-BATTERIES: COMMERCIAL PRODUCTIONThe Li-Ion battery manufacturer that GM had selected for its next year's Plug-in hybrid (Chevy-volt) is:OPTIONS:1- A123 Systems-USA2- Yuasa-Japan3- Valence-USA4- BYD-China5- LG-Chem-South Korea

  Student ResponseA. 5B. 1C. 3D. 2E. 4

Score: 2/2

58.

PS6-P6x

PS6-P6: LITHIUM-BATTERIES: anode/cathode/electrolyte materialsMatch the listed descriptions for the following:a- anode-materials;b- cathode-materials;c- electrolyte-materialsOPTIONS:1- lithium-salts, ethylene carbonate2- Li-carbon, Li-graphite, Li-Titanate, Li-Silicon, Li-Germanium3- LiFePO4 LFP, LiNiO2 LNO, LiCoO2 LCO, LiMnO2 LMO

  Student ResponseA. 2; 3; 1B. 3; 1; 2C. 1; 2; 3D. 2; 1; 3E. 1; 3; 2F. 3; 2; 1

Score: 2/2

59.

PS6-P8n

  PS6-P8n: LITHIUM-BATTERIES: anode/cathode/electrolyte materialsBasic cell voltage:The polarization voltages for the cathode materials are:LiFePO4 LFP: 3.3 voltsLiNiO2 LNO: 3.5 voltsLiCoO2 LCO: 3.7 voltsLiMnO2 LMO: 4.0 voltsThe polarization voltages for the anode materials are:Lithium-graphite LG LiC6: -0.2 voltsLithium-Titanate LT Li4Ti5O12: -2.0 voltsLithium-Silicon LSi Li4Si: -1.0 voltsLithium-Germanium LGe Li4Ge: -1.2 voltsLithium-TitanateLi4Ti5O12: -2.0 voltsFind the basic cell voltage for a LiFePO4 battery cell with Lithium-Germanium LGe anode:OPTIONS:1- -4.5 volts2- -3.3 volts3- +2.1 volts4- +3.3 volts5- +4.5 volts

  Student Response

A. 1B. 2C. 3D. 4E. 5

Score: 2/2

60.

PS6-P4x

PS6-P4: LITHIUM-BATTERIES: Basic Cell OperationBasic cell voltage depends on: Select all that apply.OPTIONS:1- anode polarization voltage2- cathode polarization voltage3- electrolyte or separator polarization voltage4- load current5- load voltage

  Student ResponseA. 3, 5B. 1, 2C. 1, 3D. 1, 4E. 2, 3F. 2, 4

Score: 2/2

61.

PS6-P15n

  PS6-P15n: LITHIUM-BATTERIES: Current StatusCompute the COMBINED AVERAGE energy density, in wh/kg, of the following two Lithium-battery-packs:ED1: GM-Chevy-Volt Lithium-battery-pack:Total energy content = 16 kwhBattery-pack-weight = 170 kgED2: Tesla-Roadster Lithium-battery-pack:Total energy content = 53 kwhBattery-pack-weight = 450 kgOPTIONS:1- 25 wh/kg2- 50 wh/kg

3- 100 wh/kg4- 200 wh/kg5- 400 wh/kg

  Student ResponseA. 1B. 2C. 3D. 4E. 5

Score: 2/2

62.

PS6-P22x

PS6-P22: LITHIUM-BATTERIES: COMMERCIAL PRODUCTIONLi-Ion technology which is used most used by the current manufacturers is:OPTIONS:1- Lithium Cobalt Oxide LiCoO22- Lithium Manganese Oxide LiMnO23- Lithium Nickel Oxide LiNiO24- Lithium Iron Phosphate - LiFePO4

  Student ResponseA. 2B. 4C. 3D. 1

Score: 2/2

63.

PS6-P23x

  PS6-P23: LITHIUM-BATTERIES: COMMERCIAL PRODUCTION:The energy density of the current Li-ion-family-battery technologies is around:OPTIONS:1- 50 wh/kg2- 100 wh/kg3- 150 wh/kg4- 200 wh/kg5- 300 wh/kg

  Student ResponseA. 3

B. 6C. 2D. 4E. 5F. 1

Score: 2/2

64.

PS6-P17x

PS6-P17: LITHIUM-BATTERIES: COMMERCIAL PRODUCTION:The battery technology to be used in next year's EVs and Plug-in-Hybrids is:OPTIONS:1- Lithium-Ion Family Batteries2- Lead Acid Batteries3- NiMH Batteries4- Nickel-Cadmium (NiCd)

  Student ResponseA. DB. 2C. 1D. 3

Score: 2/2

65.

PS6-P21x

  PS6-P21: LITHIUM-BATTERIES: COMMERCIAL PRODUCTIONThe four Li-Ion and Li-Ion-family of batteries are:OPTIONS:1- Lithium Cobalt Oxide LiCoO22- Lithium Manganese Oxide LiMnO23- Lithium Nickel Oxide LiNiO24- Lithium Iron Phosphate - LiFePO45- Lithium Lead oxide LiPbO2

  Student ResponseA. 1,3,4,5B. 1,2,3,5C. 1,2,3,4D. 1,2,4,5E. 2,3,4,5

Score: 2/2

66.

PS6-P7x

PS6-P7: LITHIUM-BATTERIES: anode/cathode/electrolyte materialsSpecial requirements for the electrolyte of a lithium-battery-cell: The "Electrolyte" of a Lithuim-Ion battery must be: select all that applyOPTIONS:1- must be an aqueous solution2- must be an non-aqueous solution3- else it will be electrolyzed4- else it will be synthesized

  Student ResponseA. 1; 3B. 2; 3C. 2; 4D. 1; 4

Score: 2/2

67.

PS6-P1x

  PS6-P1: LITHIUM-BATTERIES: Basic Cell OperationPS6: CURRENT DEVELOPMENTS: LITHIUM BATTERIES: total 23LB1-Lithium-Batteries: Basic Cell Operation: 5 LB2-Lithium-Batteries: Cell materials: 5LB3-Lithium-Batteries: Computing Technology Metric: 4LB4-Lithium-Batteries: Current status: 2LB5-LITHIUM-Batteries: Other 7Google-Images: "Lithium battery cell anode cathode materials"Match the listed descriptions for the following:Lithium Battery Cell:a- anode;b- cathode;c- electrolyteOPTIONS:1- Lithium salts2- Carbon or graphite3- Lithium-metal-oxide(or phosphate)

  Student ResponseA. 1; 3; 2

B. 1; 2; 3C. 3; 2; 1D. 2; 3; 1E. 2; 1; 3F. 3; 1; 2

Score: 2/2

68.

PS6-P18x

PS6-P18: LITHIUM-BATTERIES: COMMERCIAL PRODUCTION:Match the listed descriptions to the following --Li-Ion-family battery manufacturers for EVs:a- USA;b- Japan;c- South-Korea;d- ChinaOPTIONS:1- BYD2- LG-Chem3- A123 Systems/Valence4- Yuasa

  Student ResponseA. 3; 4; 2; 1B. 4; 3; 1; 2C. 3; 2; 4; 1D. 1; 3; 2; 4E. 3; 4; 1; 2F. 2; 3; 4; 1

Score: 2/2

69.

PS6-P20x

  PS6-P20: LITHIUM-BATTERIES: COMMERCIAL PRODUCTIONMatch the listed descriptions to the following:The Li-Ion battery manufacturer located in:a- Austin, Texas;b- Watertown, MassachusettsOPTIONS:1- LG-Chem2- A123Systems

3- Valence4- Yuasa

  Student ResponseA. 4; 3B. 3; 4C. 4; 1D. 3; 1E. 3; 2F. 4; 2

Score: 2/2

70.

PS6-P5x

PS6-P5: LITHIUM-BATTERIES: Basic Cell OperationCharge, discharge statesMatch the listed descriptions for the following:a- While discharging: anode-transitional state;b- While discharging: cathode-transitional stateOPTIONS:1- LiC6 => 6C + xLi+ + xe-2- 6C + xLi+ + xe- => LiC63- Li1-xFePO4 + xli+ + xe- => LiFePO44- LiFePO4 + xli+ + xe- => Li1-xFePO4

  Student ResponseA. 1, 2B. 2, 3C. 3, 5D. 1, 4E. 1, 3F. 2, 4

Score: 2/2