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.Management Sciences
Category: Mechanical Engineering Mcqs
Bar charts are suitable for_____________________?
A. minor works
B. major works
C. large projects
D. all of the above
E. none of the above
According to fan laws, for the fans having constant wheel diameters, the power demand varies_______________?
A. directly as fan speed
B. square of fan speed
C. cube of fan speed
D. square root of fan speed
E. none of the above
Most of the domestic refrigerators work on the following refrigeration system _________________?
A. vapour compression
B. vapour absorption
C. carnot cycle
D. electrolux refrigerator
E. dual cycle
Two non-collinear parallel equal forces acting in opposite direction__________________?
A. balance each other
B. constitute a moment
C. constitute a couple
D. constitute a moment of couple
E. constitute a resultant couple
Specific weight of sea water is more that of pure water because it contains_________________?
A. dissolved air
B. dissolved salt
C. suspended matter
D. all of the above
E. heavy water
Shaft revolving in a bearing is the following type of pair________________?
A. lower pair
B. higher pair
C. spherical pair,
D. cylindrical pair
E. bearing pair
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is_____________________?
A. less than 2 kg
B. more than or equal to 3.65 kg
C. more than 10 kg
D. there is no such consideration
E. pone of the above
The pour point of diesel oil must be_________________?
A. lower than the coldest atmospheric temperature at which oil is to be pumped
B. higher than above
C. has no such relation
D. more than 100°C
E. none of the above
In a typical medium speed 4 stroke cycle diesel engine_______________?
A. exhaust valve opens at 35° before bot-tom dead center and closes at 20° after top dead center
B. exhaust valve opens at bottom ‘dead center and closes at top dead center
C. exhaust valve opens just after bottom dead center and closes just before top dead center
D. may open and close anywhere
E. none of the above is true
Non uniform flow occurs when_________________?
A. the direction and magnitude of the velocity at all points are identical
B. the velocity of successive fluid particles, at any point, is the same at successive periods of time
C. the magnitude aricf direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
E. velocity, depth, pressure, etc. change from point to point in the fluid flow
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