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.Management Sciences
Category: Mechanical Engineering Mcqs
Which of the following mechanism is obtained from lower pair________________?
A. gyroscope
B. pantograph
C. valve and valve gears
D. generated straight line motions
E. all of the above
Railway rails are normally made of_______________?
A. mild steel
B. alloy steel
C. high carbon
D. tungsten steel
E. cast iron steel
Reheating in gas turbine results in___________________?
A. increase of work ratio
B. decrease of thermal efficiency
C. decrease of work ratio
D. both A. and B. above
E. both B. and C. above
In carburettors, the top of the fuel jet with reference to the level in the float chamber is kept at_________________?
A. same level
B. slightly higher level
C. slightly lower level
D. may be anywhere
E. varies from situation to situation
If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as__________________?
A. free expansion
B. hyperbolic expansion
C. adiabatic expansion
D. parabolic expansion
E. throttling
A sudden fall in the barometer reading is a sign of approaching________________?
A. fine weather
B. rains
C. storm
D. cold wave
E. hot wave
Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?
A. desirable
B. economical
C. essential
D. optional
E. uneconomical
In grey cast iron, carbon is present in the form of____________________?
A. cementite
B. free carbon
C. flakes
D. spheroids
E. nodular aggregates of graphite
The purpose of a link is to________________?
A. transmit motion
B. guide other links
C. act as a support
D. all of the above
E. none of the above
A fast breeder reactor__________________?
A. uses graphite rods as moderator
B. has powerful moderator
C. has no moderator
D. uses ferrite material as moderator
E. uses pressurised water as moderator
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