MECHANICAL ENGINEER EXAM QUESTIONS

Question No. 1. In order to have maximum power from a Pelton turbine, the bucket speed must be
(A) equal to twice the jet speed.
(B) equal to half of the jet speed.
(C) equal to the jet speed. 
(D) independent of the jet speed. 

Question No. 2. Which type of coupler is used in BOXN wagons ?
a) CASNUB
b) UIC
c) CBC
d) Screw coupling

Question No. 3. A cylinder contains 5 m 3  of an ideal gas at a pressure of 1 bar. This gas is compressed in a reversible isothermal process till its pressure increases to 5 bar. The work in kJ required for this
process is
(A) 953.2
(B) 804.7
 (C) 981.7 
(D) 1021.2
(E) None of the Above

Question No. 4.  A long thin walled cylindrical shell, closed at both the ends, is subjected to an internal pressure.
The ratio of the hoop stress (circumferential stress) to longitudinal stress developed in the shell is
(A) 0.5 
(B) 1.0 
(C) 4.0 
(D) 5.0
(E) None of the Above

Question No. 5. BOX wagon is
a) 4 wheeler vacuum braked wagon
b) 8 wheeler air braked
wagon c) 8 wheeler vacuum braked wagon
d) 4 wheeler air braked wagon

Question No. 6. If two nodes are observed at a frequency of 1800 rpm during whirling of a simply supported long
slender rotating shaft, the first critical speed of the shaft in rpm is
(A) 600
(B) 450 
(C) 200 
(D) 900

Question No. 7. IRCAMTECH is located in
a) Bangalore
b) Calcutta
c) New Delhi
d) Gwalior


Question No. 8. The production capacity of DLW is ____ locos/year
a) 135
b) 190
c) 165
d) 150

Question No. 9. A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth of cut of 4 mm. The rotational speed of the workpiece is 160 rpm. The material removal rate in mm 3 /s is
(A) 160 
(B) 167.6 
(C) 1600 
(D) 1675.5

Question No. 10. Hand brakes are provided in
a) 4 wheeler wagons
b) Non AC coaches
c) AC coaches
d) 8 wheeler wagons

Question No. 11. For a ductile material, toughness is a measure of
(A) resistance to scratching 
(B) ability to absorb energy up to fracture
(C) ability to absorb energy till elastic limit 
(D) resistance to indentation

Question No. 12. The population of diesel locos on Indian Railways is around
a) 3400
b) 7000
c) 5600
d) 4300

Question No. 13. COFMOW is located in
a) Bangalore
b) Calcutta
c) New Delhi
d) Secunderabad

Question No. 14. A planar closed kinematic chain is formed with rigid links PQ = 2.0 m, QR = 3.0 m, RS = 2.5 m
and SP = 2.7 m with all revolute joints. The link to be fixed to obtain a double rocker (rockerrocker)
mechanism is
(A) RS
(B) QR 
(C) PQ 
(D) SP

Question No. 15. BOBR wagon is
a) 8 wheeler vacuum braked wagon
b) 8 wheeler air braked wagon
c) 4 wheeler vacuum braked wagon
d) 4 wheeler air braked wagon

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