1 kilowatt hour is the same as
A.1 joule
B.1000 joules
C.1000 watt-sec
D.3600 watt-hours
E.3600,000 watt-sec
Category: Mechanical Engineering Mcqs
A flow is said to be laminar when
A.The fluid particles moves in a zig-zag way
B.The Reynold number is high
C.The fluid particles move in layers parallel to the boundary
D.None of the above
The degree of fementation in brewing pressure can be measured by
A.Conductivity meter
B.pH meter
C.Bolometer
D.Smoke meter
E.Turbidity meter
The friction factor in turbulent flow in smooth pipes depends upon the following:
A.V, D, ?, L,
B.L,
C.(L, D, ?, ?,
D.V, D,
E.L, D, Q, V.
Two 12 mm plates are to are welded with the help of a 8 gauge electrode. What will be the current requirement
A.75 amps
B.100 amps
C.125 amps
D.150 amps
E.130 amps
Which of the following is an electric tachometer?
A.Stroboscopic tachometer
B.Eddy current tachometer
C.Drag type tachometer
D.Ignition type tachometer
E.All of the above
A body is pushed with a force of 10 N for 0.5 second. The impulse given to the body is
A.5 Ns
B.2.5 Ns
C.3.5 Ns
D.50 Ns
Work done by an expanding gas under adiabatic condition results in
A.No change in temperature
B.Temperature increase
C.Temperature decrease
D.Temperature decreases first and then increase
E.Temperature increase first and then decrease
If the discharge pressure of a refrigeration compressor is too high it shows
A.Too little or to warm condenser water
B.Lack of refrigerant
C.Excessive cooling load
D.Lack of compressor lubrication
E.Any of the above
Sprues are generally
A.uniform size
B.tapered downwards
C.tapered upwards
