Agree
Disagree
✅ The correct answer is option A.
Mechanical Engineering MCQs
Charles’ law states that all perfect gases change in volume by __________ of its original volume at 0° C for every 1° C change in temperature, when pressure remains constant.
1/27th
1/93th
1/173th
1/273th
✅ The correct answer is option D.
Maximum work is saved in a two stage reciprocating air compressor with incomplete intercooling.
Agree
Disagree
✅ The correct answer is option B.
When the Mach number is more than 6, the flow is called
sub-sonic flow
sonic flow
super-sonic flow
hyper-sonic flow
✅ The correct answer is option D.
The periodic time of a particle with simple harmonic motion is __________ proportional to the angular velocity.
directly
inversely
✅ The correct answer is option B.
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
isothermal
isentropic
polytropic
none of these
✅ The correct answer is option B.
The ratio of the volume at cut-off to the swept volume is called
cut-off ratio
expansion ratio
clearance ratio
none of these
✅ The correct answer is option A.
The heat transfer from coolant to air in the radiator of an automobile engine takes place by
radiation only
convention only
convection and radiation
conduction, convection
✅ The correct answer is option C.
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is
0.2
0.35
0.5
0.65
✅ The correct answer is option C.