UPSC ENGINEERING SERVICES - 2017 ESE 2017 - PRELIMS Questions with Detailed Solutions GENERAL STUDIES & ENGINEERING APPTITUDE Visit our website : www.aceenggacademy.com VIDEO SOLUTIONS FOR ESE - 2017 SET - A Hyderabad | Kukatpally | Delhi | Bhopal | Pune | Bhubaneswar | Bengaluru Lucknow | Patna | Chennai | Vijayawada | Vizag | Tirupathi | Kolkata
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Which of the above phases are relevant, sequentially?
(a) 1, 2 and 3 only (b) 1, 2 and 4 only (c) 3 and 4 only (d) 1,2,3 and 4
: 41 : SET - A
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72. Ans: (d)
Phases in project management
1. Identification (Need statement)
2. Formulation (Conception/design)
3. Appraisal (Economical/Technical)
73. Phenol and formaldehyde are polymerized to a resultant product known as
(a) PVC (b) Bakelite (c) Polyester (d) Teflon
73. Ans: (b)
Condensation of phenol and formaldehyde results in the formation of “BAKELITE”
74. Consider the following statements concerning e-governance and technology:
1. Rich Site Summary (RSS) is not a very useful tool for working on Web-service technology
2. Myspace is one of the most visited networks in the world
3. Facebook.Com is not the most useful social networking site of choice for most students
4. Wiki- is a group collaboration software tool working on Web-service technology
Which of the above statements are correct?
(a) 1 and 4 (b) 2 and 4 (c) 1 and 3 (d) 2 and 3
74. Ans: (b)
RSS is the acronym used to describe the de facto standard for the syndication of Web content. RSS
is an XML-based format and while it can be used in different ways for content distribution, its most
widespread usage is in distributing news headlines on the Web.
Hence statement 1 is false
Wikis can be used when geographically dispersed team members need to collaborate. The wiki
format is good for adding information and getting feedback from team members
Statement 4 is true
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75. Pnematic structures are:
1. Membrane structures
2. Stabilized by compressed air
3. Characterized by internal pressure being less than external pressure
4. Characterized by internal pressure being equal to or more than external pressure
Select the correct answer using the codes given below:
(a) 1,2 and 3 (b) 1,2 and 4 (c) 2 and 4 only (d) 1 and 4 only
: 43 : SET - A
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75. Ans: (b)
Pneumatic structure is a membrane structure that is stabilized by the pressure of compressed air. Air-supported structures are supported by internal air pressure. The air pressure within this bubble is increased slightly above normal atmospheric pressure and maintained by compressors or fans. 76. Consider the following statements regarding water:
1. Water is a polar molecules
2. Water molecules align themselves in an electric field
3. Water molecules vary their alignment if the applied electric polarity changes with time
4. Water molecules align themselves in a magnetic field
Which of the above statements are correct?
(a) 1,2 and 3 only (b) 1, 2 and 4 only (c) 3 and 4 only (d) 1,2,3 and 4
76. Ans: (a)
In water molecules the atoms arranged in asymmetrically that is the positive atoms are not coincide
with the negative atoms.
1. Hence it is a polar molecule.
It possess a permanent electric dipole moment.
2. When subjected to an external electric field, the molecules align in the direction of electric
field.
3. On reversing the polarity the molecules also change their orientation.
4. Magnetic field has no effect on water molecule.
77. Consider the following assumptions made while developing the ionic packing theory:
1. Cations and anions are spherical but these spheres are not hard
2. Cations are always smaller than anions
3. Each cation would tend to be surrounded by the maximum number of anions permitted by
geometry
4. Cations and anions do not touch each other
Which of the above assumptions are correct?
(a) 1 and 3 (b) 1 and 4 (c) 2 and 4 (d) 2 and 3
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77. Ans: (c)
Statement-2: These cations are smaller than anions because when an electron is lost, electron-
electron repulsion (and therefore, shielding) decreases and the protons are better able to pull the
remaining electrons towards the nucleus.
Statement-4: Due to repulsion force the cations and anions will not touch each other.
78. Consider the following statements:
1. Asphalt is a naturally occurring product having non-crystalline structure
2. Rock Asphalt occurs in limestones or sandstones
3. Tar is a residue left after distillation of crude oil
4. Resins in Asphalt provide the stickiness to the product
Which of the above statements are correct?
(a) 1,2 and 3 only (b) 3 and 4 only (c) 1,2 and 4 only (d) 1,2,3 and 4
78. Ans: (c)
Tar is obtained by destructive distrillation of coal or wood.
Statement -3 is wrong.
The option without statement -3 is ‘C’.
79. Consider the following statements:
1. Baking soda is used in fire extinguishers
2. Quick lime is used in the manufacture of glass
Which of the above statements is/are correct?
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
79. Ans: (c)
Baking soda is used in fire extinguishers. Quick lime is used in the manufacture of glass.
: 45 : SET - A
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80. In the case of ionic bonding, the molecule is stable as long as the number of bonding electrons is
(a) Equal to the number of anti-bonding electrons
(b) Less than the number of anti-boning electrons
(c) Greater than the number of anti-bonding electrons
(d) Equal to the number of anti-bonding neutrons
80. Ans: (c)
bond factor = 0.5 ( Bonding electrons in the molecule – antinbonding electrons in the molecule)
when the bond factor is “zero”, the molecule is highly unstable. Hence bond factor must be gtreater
than zero.
Based on this if bond factor is assumed as 1
1 = = 0.5 ( Bonding electrons in the molecule – antinbonding electrons in the molecule)
2 = Bonding electrons in the molecule – antinbonding electrons in the molecule
bonding electrons in the molecule = 2 + antinbonding electrons in the molecule
81. A resistor measures 4 at 40C and 6 at 80C. At 0C the resistor will measure
(a) 1.5 (b) 2 (c) 3 (d) 4
81. Ans: (b)
The variation of resistance with temperature is given by
R = Ro(1+t), where
Ro = resistance at 0C
R = resistance at tC
= temperature coefficient of resistance
Given R1 = 4, t1 = 40C
R2 = 6, t2 = 80C
R1 = Ro(1+t1) and R2 = Ro(1+t2)
R1–Ro = Rot1 and R2–Ro = Rot2
Eliminating
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2
1
o2
o1
t
t
RR
RR
12
1221o tt
tRtRR
4080
406804Ro
240
80
Ro = 2
82. Fatigue resistance of materials can be improved by:
1. Shot peening 2. Polishing the surface
Which of the above is/are correct?
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
82. Ans: (c)
83. Consider the following statements on ‘firewall’ used in computing systems:
1. It controls and monitors the data traffic flow between inside and outside network
2. It protects and secures the inside network from any outside network
3. It can be implemented in software or hardware or a combination of both
Which of the above statements are correct?
(a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3
83. Ans: (d)
Firewall is a network security system that monitors and controls the incoming and outgoing network
traffic based on predetermined security rules. A firewall typically establishes a barrier between a
trusted, secure internal network and another outside network, such as the Internet, that is assumed
not to be secure or trusted.
There are various types of firewalls with differences in where they are located and what types of
activity they control. Firewalls can be implemented in both hardware and software, or a
combination of both.
: 47 : SET - A
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84. Consider the following as advantages of ICT tools in educational systems:
1. Increased capacity and cost effectiveness of the educational system
2. Achievement by target groups that had limited access to traditional education
3. Support for improvement of the quality and relevance of existing structures of education
4. Provision of links between various educational institutions for knowledge sharing
Which of the above statements are correct?
(a) 1, 2 and 3 only (b) 1, 2 and 4 only (c) 3 and 4 only (d) 1, 2, 3 and 4
84. Ans: (d)
ICTs in education enable
• Access to remote learning resources
• Instructions to be received simultaneously by multiple, geographically dispersed learners
• Gains in understanding and analytical skills, including improvements in reading Comprehension.
• ICT facilitates sharing of resources, expertise and advice
• Greater efficiency throughout the educational institution
85. How is the closeness or commonness of attitude, behaviour, trust and performance within the
organization designated?
(a) Cohesion (b) Morale (c) Communication (d) Leadership
85. Ans: (a)
The question deals with the behavior of an individual in an organization.
-Cohesion is defined in the textbook
-Morale is defined as the total satisfaction derived by an individual from his job, his work-group,
his superior, the organization he works for and the environment.
-Communication is a process of exchanging verbal and non verbal messages.
-The exercise of authority, whether formal or informal, in directing and coordinating the work of
others is defined as Leadership in Public administration
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86. Accessibility legislation is intended to
(a) Protect intellectual property
(b) Improve the usability of websites
(c) Make all websites easier to use for visually impaired people
(d) Improve access to services for disabled people in both the physical and the virtual worlds
86. Ans: (d)
Government of India Act – Persons with disability (Equal Opportunities, Protection of Rights and
Full Participation) Act, 1995
Welfare Rights in Rights Ethics
87. PRAGATI is the acronym
(a) Pro-active governance and transparency in India
(b) Pro-active governance and timely implementation
(c) Primary governance for transparency in India
(d) Promoting and accomplishing governance with assured and timely implementation
87. Ans: (b)
PRAGATI (Pro-Active Governance And Timely Implementation), as the name suggests, is aimed at
starting a culture of Pro-Active Governance and Timely Implementation.
It is a multi-purpose and multi-modal platform that is aimed at addressing common man’s
grievances, and simultaneously monitoring and reviewing important programmes and projects of
the Government of India as well as projects flagged by State Governments.
88. The main goal of G2B (Government to Business) is
1. To increase productivity by giving more access to information
2. To lower the cost of doing business
3. To create more transparency
Select the correct answer using the codes given below: (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3
: 49 : SET - A
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88. Ans: (d)
G2B interaction provides a greater amount of information that business needed, also it makes those
information more clear. A key factor in business success is the ability to plan for the future.
Planning and forecasting through data-driven future. The government collected a lot of economic,
demographic and other trends in the data. This makes the data more accessible to companies which
may increase the chance of economic prosperity.
G2B interaction reduce costs, carry out all companies to interact with the government
89. In a software project, COCOMO (Cost Constructive Model) is used to estimate
(a) Effort and duration based on the size of the software
(b) Size and duration based on the effort of the software
(c) Effort and cost based on the size of the software
(d) Size, effort and duration based on the cost of the software
89. Ans: (a)
The basic COCOMO model gives an approximate estimate of the project parameters. The basic
COCOMO estimation model is given by the following expressions:
Effort = a1 х (KLOC)a 2 PM
Tdev = b1 x (Effort)b 2 Months Where
• KLOC is the estimated size of the software product expressed in Kilo Lines of Code,
• a1, a2, b1, b2 are constants for each category of software products,
• Tdev is the estimated time to develop the software, expressed in months,
• Effort is the total effort required to develop the software product, expressed in person months
(PMs).
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90. If a clock loses 5 seconds per day, what is the alteration required in the length of pendulum in order
that the clock keeps correct time?
(a) 86400
4times its original length be shortened
(b) 86400
1 times its original length be shortened
(c) 8640
1 times its original length be shortened
(d) 8640
4 times its original length be shortened
90. Ans: (c)
Directions:
Each of the next Ten items consists of two statements, one labelled as ‘Statement (I)’ and the other
as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items
using the codes given below:
Codes:
(a) Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct
explanation of Statement (I)
(b) Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct
explanation of Statement (I)
(c) Statement (I) is true but Statement (II) is false
(d) Statement (I) is false but Statement (II) is true
91. Statement (I): Global warming is the cause for climate change
Statement (II): Ozone depletion will cause global warming.
91. Ans: (c)
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92. Statement (I): Graph between potential energy of spring versus the extension or compression of the
spring is a straight line.
Statement (II): Potential energy of a stretched or compressed spring, is directly proportional to
square of extension or compression.
92. Ans: (d)
Graph between potential energy Vs extension/compression.
Statement-1 Not correct
Potential Energy of a spring = 2
1kx2
x - extension/compression of spring
Statement-2 Correct
–x x extension compression
PE = 2kx2
1
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93. Statement (I): Fatigue failure is a stress which is lower than the yield strength of a metal.
Statement (II): Repeated straining lowers the yield strength.
93. Ans: (a)
Fatigue failure:
When a material is subjected to a repeated and cyclic stresses and it crosses its endurance limit, the
material fails at much lower stress than yield strength. This is called fatigue failure.
Fatigue failure always originates from the surface so any method to improve surface finish will
increase the fatigue resistance.
So, the fatigue failure resistance is increased by
1. Short peening (introduction of local compressive stresses on material).
2. Polishing of surface.
94. Statement (I): Physical properties of composite materials are generally isotropic.
Statement (II): The stiffness of composite panel will often depend upon the orientation of the
applied forces and /or moments.
94. Ans: (d)
The composites are made up of more than one material so at different locations of composites, the
material properties are different. So the composites are unisotropic materials.
The stiffness of the composite materials depends upon orientation of reinforcement phase and
orientation of applied forces.
So from the above information the statement (I) is wrong and the statement (II) is right.
95. Statement (I): Environmental considerations are not necessarily the same as, or congruent with,
Ecological considerations.
Statement (II): Environmental considerations address more towards maintaining, whereas
Ecological considerations address more towards sustaining.
: 53 : SET - A
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95. Ans: (a)
Ecological Consideration
An ecosystem is a complex system with many parts, both. Living and non living. All parts of the
ecosystem work together
Statement (I):- Environmental considerations are not necessarily the same as, or congruent with,
Ecological considerations.
Statement (II):- Environmental considerations address more towards maintaining, whereas
Ecological considerations address more towards sustaining.
96. Statement (I): Manganese is always added to steels since it combines with the sulphur content to
form manganese sulphide.
Statement (II): If manganese is not added, iron sulphide which is not harmful for steel, would form.
96. Ans: (c)
Manganese will act as a deoxidizer and purifying agent in steel and it combines with sulphur to
decrease the harmful effect on steel.
So the statement (II) is wrong.
97. Statement (I): Quality Circle is a method to bring Organizational Improvement through indulging
the workers.
Statement (II): The main aim of Quality Circle is self-development and mutual development of
grass root level employees.
97. Ans: (c)
The main aim of quality circle is to improve workplace. While doing it, workers can get trained which leads to self-development which is a by product. So, Statement 2 is incorrect. The answer is “C”.
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98. Statement (I): Digital India is a program to transform India into a digitally empowered society.
Statement (II): Digital India is a program to institute smart cities.
98. Ans: (c)
99. Statement (I): Increased cloud cover will lead to warmer winters due to clouds reflecting more
intense solar energy.
Statement (II): Overcast cloud conditions result in decrease in the day-night temperature difference.
99. Ans: (d)
100. Statement (I): Engineers shall hold paramount the safety, health and welfare of the public while
performing their professional duties.
Statement (II): Engineers shall continue their professional development throughout their careers.
100. Ans: (b)
Statement (I) is the fundamental Canon 1, as well as Rule of Practice 1.a in NSPE and is true
Statement (II) is a professional obligation of Engineer as per NSPE 9.e.
Both are independently true.
: 55 : SET - A
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