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.Management Sciences
Category: Mechanical Engineering Mcqs
The number of drums in Benson steam generator is_________________?
A. one
B. two
C. one steam drum and one water drum
D. no drum
E. none of the above
Euler’s equation is applicable for__________________?
A. centrifugal compressor
B. axial compressor
C. pumps
D. all of the above
E. none of the above
For low speed operation or for idling in petrol engines, the engine requirements are for_______________?
A. lean mixture
B. theoretically correct mixture
C. rich mixture
D. any type of mixture
E. lean/rich mixture depending upon capacity of engine
For ship vessel industry the following layout is best suited_________________?
A. process layout
B. product layout
C. fixed position layout
D. plant layout
E. functional layout
A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?
A. 1 : 5
B. 1 : 2.5
C. 1 :25
D. 1:V5″
E. 1 : 53/2
In S.H.M., the velocity vector w.r.t. displacement vector _________________?
A. leads by 90°
B. lags by 90°
C. leads by 180°
D. are in phase
E. could be anywhere.
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio_________________?
A. 50 : 50
B. 30 : 70
C. 70 : 30
D. 40 : 60
E. 60 : 40
In petrol engines, advancing the spark timing will_______________?
A. increase the knocking tendency
B. decrease the knocking tendency
C. not affect the knocking tendncy
D. increase or decrease knocking tendency depending on strenght and time of spark
E. unpredictable
If an unsupported uniform cross sectional elastic bar is subjected to a longitudinal impact from a rigid bob moving with velocity v, then a compressive wave of intensity sc is propagated through the bar as follows______________________?
A. vpE
B. vVvF
C. WpE/2
D. IvHpE
E. none of the above, where E = modulus of elasticity and p = mass density
The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation___________________?
A. 0.1%
B. 0.5%
C. 1.0%
D. 5%
E. 10%.
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