Here I am looking for the last year Mechanical Engineering question paper of UPSC Junior Works Manager Exam, can you please provide me the same???

As you are looking for the last year Mechanical Engineering question paper of UPSC Junior Works Manager Exam, so here I am sharing the same with you

Consider the following statements :
Effect of unbalanced primary force along the line of stroke produces
1. Swaying couple
2. Variations in tractive force
3. Hammer blow
Which of these statements are correct ?
(a) 1, 2 and 3 (b) 1 and 2 only
(c) 2 and 3 only (d) 1 and 3 only

A cannonball is fired from a tower 80 m above the ground with a horizontal
velocity of 100 m/s. Determine the horizontal distance at which the ball will hit the
ground. (Take g = 10 m/s2)
(a) 400 m (b) 280
(c) 200 m (d) 100 m

Consider the following statements :
Shear force in beams is caused by
1. Lateral forces acting on the beam
2. Variation of bending moment along beam length
3. A couple acting on the beam
Which of the above statements is/are correct ?
(a) 1 only (b) 1 and 2
(c) 2 and 3 (d) 1 and 3

A car travels on a horizontal circular track of radius 9 m, starting from rest at a
constant tangential acceleration of 3 m/s2. What is the resultant acceleration of the
car, 2 sec after starting ?
(a) 3 m /sec2 (b) 4 m/sec2
(c) 5 m/sec2 (d) 7 m/sec2

Consider the following statements :
If a beam is to bend without being twisted,
1. Plane of a load must contain one of the axes of symmetry of the beam
2. The beam cross-section must have at least an axis of symmetry
Which of the above statements is/are correct ?
(a) 1 only (b) 2 only
(c) Both 1 and 2 (d) Neither 1 nor 2

Water drops from a tap at the rate of four droplets per second. Determine the
vertical separation between two consecutive drops after the lower drop attained a
velocity of 4 m/s. (Take g = 10 m/s2)
(a) 0⋅49 m (b) 0⋅31 m
(c) 0⋅50 m (d) 0⋅30 m

Consider the following properties of engineering materials :
1. Density
2. Conductivity
3. Elasticity
4. Hardness
5. Ductility
Which of these are mechanical properties of a material ?
(a) 1, 2 and 4 only (b) 1, 2, 3 and 4
(c) 3, 4 and 5 (d) 2, 4 and 5

A 50-kg box rests on horizontal floor for which coefficient of friction is 0⋅3. If the
box is subjected to a horizontal towing force of 400 N, what is its velocity after 5
sec from rest? (Take g = 10 m/s2)
(a) 40 m/s (b) 30 m/s
(c) 27⋅5 m/s (d) 25 m/s

Consider the following operations regarding boring machines :
1. Counterboring
2. Countersinking
3. Trepanning
Which of the above operations is/are correct ?
(a) 1, 2 and 3 (b) 1 and 2 only
(c) 2 and 3 only (d) 1 only

A 500-kg elevator starts from rest and travels upwards with a constant
acceleration of ac = 2 m/s2. What is the power output of the motor when t = 3 sec?
(Take g = 10 m/s2)
(a) 18 kW (b) 30 kW
(c) 36 kW (d) 54 kW

Consider the following components regarding numerical control system :
1. Programme of instructions
2. Machine control unit
3. Processing equipment
Which of these are correct ?
(a) 1, 2 and 3 (b) 1 and 2 only
(c) 2 and 3 only (d) 1 and 3 only

Consider the following advantages of DNC systems :
1. Time-sharing
2. Greater computational capability
3. Remote computer location
Which of the above is/are correct ?
(a) 1 and 2 only (b) 2 and 3 only
(c) 2 only (d) 1, 2 and 3

In a vapour-compression refrigerator, the design pressure at the condenser will
depend on
(a) Type of compressor (b) Refrigerant used
(c) Its capacity (d) Its coefficient of performance

In a domestic refrigerator, periodical defrosting is necessary to
(a) Protect the coil from damage
(b) Avoid wastage of power
(c) Reduce evaporator pressure
(d) Reduce condenser pressure

In a vapour-compression refrigeration system, the thermodynamic process which
the refrigerant undergoes while passing through the expansion valve is
(a) Isentripic (b) Adiabatic
(c) Throttling (d) Free expansion

Consider the following statements :
In a shell-and-tube heat exchanger, baffles are provided on the shell side to
1. Prevent the stagnation of shell-side fluid
2. Improve heat transfer
3. Provide support for tube
4. Prevent fouling of tubes
Which of the above statements are correct ?
(a) 1, 2, 3 and 4 (b) 1 and 2 only
(c) 3 and 4 only (d) 2 and 3 only

A 2-ton capacity water cooler has water entering at 30º C and leaving at 15º C.
What is the water flow rate in Lph?
(a) 40 (b) 66⋅6
(c) 402 (d) 502

Consider the following statements pertaining to heat transfer using fins :
1. Fins should be used on the side where heat-transfer coefficient is small.
2. Long and thick fins should be used.
3. Short and thin fins should be used.
4. Thermal conductivity of the fin material should be large.
Which of the above statements are correct ?
(a) 1, 2 and 4 (b) 1 and 3 only
(c) 3 and 4 only (d) 1, 3 and 4

A composite hollow sphere with radial outflow of heat is made of two layers of
materials of equal thickness with thermal conductivities in the ratio of 2 : 3 for
inner and outer layers. Ratio of outer to inner diameter is 1⋅25. What will be the
ratio of temperature drops across the inner layer to the outer layer?
(a) 0⋅833 (b) 1⋅2
(c) 1⋅875 (d) 2⋅34

Consider the following statements related to transient heat conduction :
1. Biot number and Fourier number play a vital role in unsteady heat
conduction.
2. Schmidt plot is used in one-dimensional transient heat conduction problems.
Which of the above statements is/are correct ?
(a) 1 only (b) 2 only
(c) Neither 1 nor 2 (d) Both 1 and 2

A composite slab has 3 layers of insulation of equal thickness with thermal
resistances in the ratio of 1 : 2 : 3. What will be the ratio of respective temperature
drops across the layers?
(a) 1 : 2 : 3 (b) 3 : 2 : 1
(c) 1 : 1⋅5 : 3 (d) 3 : 1⋅5 : 1

Consider the following characteristics of the system under investigation regarding
queuing model choice :
1. Number of servers
2. Arrival and service time patterns
3. Queue discipline (order of service)
4. VIP items and their number