TRUE
FALSE
✅ The correct answer is option A.
Mechanical Engineering MCQs
The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
more
less
✅ The correct answer is option B.
Crater wear is predominant in
carbon tool steels
tungsten carbide tools
high speed steel tools
ceramic tools
✅ The correct answer is option B.
The length of a simple pendulum which gives the same frequency as the compound pendulum, is
kG + l1
kG2 + l1
✅ The correct answer is option C.
The thermodynamic property of a system is said to be an intensive property whose value for the entire system __________ the sum of their value for the individual parts of the system.
is equal to
is not equal to
✅ The correct answer is option B.
The frictional torque transmitted by a cone clutch is same as that of
flat pivot bearing
flat collar bearing
conical pivot bearing
truncated conical pivo
✅ The correct answer is option D.
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is
5
10
20
40
✅ The correct answer is option B.
If petrol is used in a diesel engine, then
low power will be produced
efficiency will be low
higher knocking will occur
black smoke will be pr
✅ The correct answer is option C.
The air standard efficiency of an I.C. engine depends on
fuel used
speed of engine
compression ratio
none of these
✅ The correct answer is option C.
The ratio of linear stress to the linear strain is called
modulus of rigidity
modulus of elasticity
bulk modulus
Poisson’s ratio
✅ The correct answer is option B.