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Old July 29th, 2017, 01:44 PM
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Default Re: UPSC Civil Services Exam Model Papers

The previous year IES ME (Mechanical Engineering) question paper conducted by UPSC (Union Public Service Commission) is as follows:

Consider the following statements pertaining to stability of floating bodies:
1. A floating body will be stable when the centre of gravity is above the centre of buoyancy.
2. The positions of metacentres corresponding to different axes of rotation are generally different for the same floating object.
3. For cargo ships, the metacentric height varies with loading. Which of the above statements are correct?
(A) 1, 2 and 3
(B) 1 and 2 only
(C) 1 and 3 only
(D) 2 and 3 only

Water is coming out from a tap and falls vertically downwards. At the tap opening, the stream diameter is 20 mm with uniform velocity of 2 m/s. Assuming steady inviscid flow, constant pressure atmosphere everywhere, and neglecting curvature and surface tension effects, the diameter of the stream 0.5m below the tap opening is nearly.
(A) 11.7 mm
(B) 14.6 mm
(C) 17.5 mm
(D) 20.4 mm

An oil flows through a pipe at a velocity of 1.0 m/s. The pipe is 45m long and has 150mm diameter. What is the head loss due to friction, if 3 ρ = 869kg / m and µ = 0.0814kg / m s?
(A) 0.61 m
(B) 0.51 m
(C) 0.41 m
(D) 0.31 m

Consider the following statements:
1. At low Reynolds numbers of any flow, viscous forces dominate over inertial forces.
2. Transition from laminar to turbulent flow occurs over a range of Reynolds numbers depending on the surface presented to the flow. Which of the above statements is/are correct?
(A) 1 only
(B) 2 only
(C) Both 1 and 2
(D) Neither 1 nor 2

During a constant pressure expansion of a gas, 33.3% heat is converted into work while the temperature rises by 20K. The specific heat of the gas at constant pressure as a proportion of work, W is
(A) 8%
(B) 10%
(C) 12%
(D) 15%

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File Type: pdf IES ME question paper conducted by UPSC.pdf (414.8 KB, 4 views)
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