Q. 1 Explain following machine Elements Axle and shaft: Open Belt Drive and cross belt drive:
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Q. 1 Explain following machine Elements
Axle and shaft:
Open Belt Drive and cross belt drive:
Q. 2 Explain working of disc brake with simple sketch.
Q. 3 Explain construction and working of rigid flanged coupling.
Q. 4 Differentiate between machine and mechanism.
Q. 5 Explain steps involved in design process.
Define following properties:
i) Ductility ii) Malleability iii) Brittleness iv) Strength
v) Resilience vi) Elasticity vii) Hardness viii) Toughness
ix) Creep x) Fatigue xi) Plasticity
Q. 7 Draw neat sketch of sand casting process setup. State advantages, limitations and
engineering applications of the process.
Q. 8 Draw self explanatory diagrams of blanking, punching, piercing and drawing operations.
Q. 9 Explain hot forging process with neat sketch.
Q. 10 Draw block diagram of lathe machine and explain function of various parts.
Q. 11 Draw block diagram of radial drilling machine and explain tapping operation.
Tapping Operation:
Q. 12 With neat sketches explain surface grinding and cylindrical grinding operations.
Q. 13 Define thermodynamic system. Explain its types with example.
System, Surrounding & Boundary :• Thermodynamic system is defined
as a quantity of matter or region in
space chosen for study.
• Example- Classroom
• The mass or region outside the
system is called the Surroundings.
• System boundary is the real or
imaginary surface that separates the
system from the surrounding.
• E.g. Classroom walls.
• Boundary can be fixed or movable.
Thermodynamics Systems : Open system
➢ A system that involves mass & energy
transfer across its boundaries is called an
open system.
➢ E.g.- compressor, turbine, nozzle.
➢ We permit the mass to cross the system
boundary in either direction.
➢ Energy in the form of heat or work can
cross the open system boundary.
➢ Most of engineering problems involve
mass flow in and out of a system.
➢ The term control volume is used in place
of open system.
➢ No mass is permitted to cross the system
boundary. (constant mass)
➢ E.g. : Classroom with door & windows closed.
➢ A system in which mass is fixed called a
closed system, or control mass system.
➢ Energy in the form of heat or work can cross
the closed system boundary.
➢ In closed system, boundary does not have to
be fixed.
➢ If energy (heat/work) is not allowed to cross
we have an isolated system.
➢ By definition, universe is isolated system.
Thermodynamics Systems : Closed and Isolated
Q. 14 State zeroth, first and second (Clausius statement and Kelvin-Planck’s statement) law
of thermodynamics.
Zeroth Law of Thermodynamics: If two bodies are in thermal equilibrium with a third body
separately, they are also in thermal equilibrium with each other.
First Law of Thermodynamics: Energy can neither be created nor destroyed but it can only
be converted from one form to another.
Second Law of Thermodynamics:
Kevin-Planck Statement: It is impossible for heat engine operating on a cycle to receive
heat from a single reservoir and produce net work.
Clausius statement: It is impossible to construct a device that operates in a cycle and
produces no effect other than the transfer of heat from a lower-temperature body to a higher-
temperature body.
Q.15 Draw a sketch of heat pump and refrigerator using heat source and heat sink concept.
Prove that: (COP)heat pump = (COP)refrigerator + 1.
Q. 16 Numerical
Q. 17 Differentiate between water tube and fire tube boilers.
Q. 18 Write a note on Hydro-electric power plant.
Q. 19 Differentiate between 4-stroke engine and 2-stroke engine
Q. 20 Differentiate between petrol engine and diesel engine.
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