The impedance of piezo-electric crystals is
A.Negligible
B.Very low
C.Low
D.Average
E.High
Category: Mechanical Engineering Mcqs
When a 66 kV transmission line passes over a residential building, the minimum vertical clearance from the roof of the building must be
A.4 metres
B.7.5 metres
C.10 metres
D.15 metres
The unit of luminous flux is
A.Steradian
B.Candela
C.Lumen
D.Lux
E.None of the above
Vapour lock is
A.Seizure of supply of fuel in a diesel engine
B.Serious restriction to the supply of fuel due to excessively rapid formation of vapour in S.I. engine
C.Locking of carbourettor jets due to vapour formation
D.Locking of jets due to impurities in petrol
E.None of the above
In which of the following state manufacturing unit of M/S Bharat Heavy Electricals Ltd. Is not located?
A.Rajasthan
B.U.P.
C.Andhra Pardesh
D.M.P.
E.Karnataka
The condition of refrigerant before and after compression in vapour compression cycle is
A.Wet vapour, cry saturated vapour
B.Liquid, wet vapour
C.Dry saturated vapour, superheated vapour
D.Dry saturated vapour, liquid
E.Wet vapour, wet vapour
For a beam of uniform strength if its depth is maintained constant, then its width will vary in proportion to
A.Bending Moment, BM
B.(BM)2
C.(BM)
D.(BM)3
E.None of the above
The amount of machining allowance on castings depends on
A.size and shape of the casting
B.casting orientation
C.characteristics of the metal
D.all of the above
Which of the following key is not used in railway tracks?
A.Stuart key
B.Morgan key
C.Cotter key
D.Woodruff key
Dissociation is
A.Same is combustion
B.Process of heat liberation in which no flame exist
C.Slow combustion
D.Smokeless combustion
E.Combustion without heat
