✅ The correct answer is option B.
Mechanical Engineering MCQs
The process, generally used in winter air-conditioning to warm and humidity the air, is called
humidification.
dehumidification
heating and humidification
cooling and dehumidifi
✅ The correct answer is option C.
The wave length of the radiation emitted depends only on the temperature and is independent of the material of the body.
TRUE
FALSE
✅ The correct answer is option A.
The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)
I.P/B.P.
B.P/I.P.
B.P/F.P
F.P./B.P.
✅ The correct answer is option B.
The maximum shear stress in a thin spherical shell subjected to an internal pressure (p) is zero.
Yes
No
✅ The correct answer is option A.
The moment of inertia of a square of side a about its base is a4/ 3.
TRUE
FALSE
✅ The correct answer is option A.
The breaking stress is __________ the ultimate stress.
equal to
less than
greater than
✅ The correct answer is option B.
The absolute humidity is the mass of water vapour present in 1 m3 of dry air.
Agree
Disagree
✅ The correct answer is option A.
Which of the following screw thread is used for power transmission in one direction only.
Acme threads
Square threads
Buttress threads
Multiple threads
✅ The correct answer is option C.
In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into
atmosphere
vacuum
discharge nozzle
back to the compressor
✅ The correct answer is option C.