IES Exam Pepar

Will you please give here sample question paper for IES Mechanical Engineering examination of UPSC ?

[Shaleen]

Hey , to get sample question paper for IES Mechanical Engineering examination of UPSC.

IES Mechanical Engineering Exam Paper :

3. (a) A 3-jet pelton turbine is required to generatE
10,000 kW under a. net head of 400 m. ThE
blade angle at outlet is 15c and the reduction ir
the relative velocity while passing over thE
b~ades is 5%. If the overall efficiency of thE
wheel is 80%, c\' = 0•98 and speed ratio = 0•46,
find (i) the diameter of the jet, (ii) the flow ratE
and (iii) the force exerted by a jet on the
buckets.


(b) (i) The lubricating oil used in a gear box of a
compressor is being recirculated through
a double pipe heat exchanger for cooling.
The oil is to be cooled from 70°C to 40°C
using water ayailable at 28°C. Flow rate
of the oil is 1000 kg/hr. Water exit
temperature should not exceed 42°C.
Cp of oil is 2•05 kJ/kg-K, Cp of water is
4•17 kJ/kg-K. Calculate the required
water flow rate and the area of the heat
exchanger. Assume counter flow. Also
assume the overall heat transfer
coefficient to be 300 W/m2K.

(ii) A refrigerator is placed near a partition
wall of a room such that there is only a
4 em gap between the wall and the
refrigerator surface facing the wall. The
refrigerator surface is of 1•6 m height and
0•8 m breadth and has a temperature of
22°C. The wall temperature is 30°C.
Calculate the rate of heat gain by the
refrigerator surface.

7 (a) (i) Show the -various psychrometrie procEsses
on a skeleton psychrometric chert.