equal to
4/3 times
1.5 times
twice
✅ The correct answer is option C.
Mechanical Engineering MCQs
In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is
high pressure saturated liquid
wet vapour
very wet vapour
dry vapour
✅ The correct answer is option A.
According to Lame’s equation, the thickness of a cylinder is equal to (where d = Inner diameter of cylinder, p = Internal pressure, and μ = Poisson’s ratio. )
none of these
✅ The correct answer is option C.
A Kaplan turbine is preferred for a specific speed of 300 to 1000 r.p.m.
Yes
No
✅ The correct answer is option A.
Slip factor in a centrifugal compressor indicates the amount of air leaked from the storage vessel.
Yes
No
✅ The correct answer is option B.
The velocity corresponding to Reynold number of 2000 is called
sub-sonic velocity
super-sonic velocity
lower critical velocity
higher critical veloci
✅ The correct answer is option C.
Polyvinylchloride (PVC) is a __________ material.
thermoplastic
thermosetting
✅ The correct answer is option A.
The velocity of whirl at outlet for an axial discharge turbine is
minimum
maximum
zero
✅ The correct answer is option C.
The viscosity of a liquid __________ its rate of flow through a hole in a vessel.
effects
does not effect
✅ The correct answer is option A.
If (R) is the base rate guaranteed per hour, (S) is the standard time for the job and (T) is the actual time, then according to Halsey 50-50 plan, wages for the job will be
TR
TR + (S – T)R
✅ The correct answer is option B.