Agree
Disagree
✅ The correct answer is option A.
Mechanical Engineering MCQs
Cast iron and steel pipes are produced by
slush casting
investment casting
true centrifugal casting
die casting
✅ The correct answer is option C.
Which of the following is a spring controlled governor?
Hartnell governor
Hartung governor
Wilson-Hartnell governor
all of these
✅ The correct answer is option D.
The running cost of a petrol engine is __________ than that of a diesel engine.
higher
lower
✅ The correct answer is option A.
The logarithmic mean temperature difference ™ is given by (where Δt1 and Δt2 are temperature differences between the hot and cold fluids at entrance and exit)
tm = (Δt1 – Δt1) loge(Δt1/Δt1)
✅ The correct answer is option A.
The mass of excess air supplied is equal to
x Mass of excess carbon
x Mass of excess oxygen
x Mass of excess carbon
x Mass of excess oxyg
✅ The correct answer is option D.
For welding plates of thickness more than 12.5 mm, its edges
do not require bevelling
should be bevelled to a single-V or U-groove
should have a double-V or U-groove on one side
should have a double-V
✅ The correct answer is option D.
Wet bulb temperature is the temperature of air recorded by a thermometer, when
it is not effected by the moisture present in the air
its bulb is surrounded by a wet cloth exposed to the air
the moisture present in it begins to condense
none of the above
✅ The correct answer is option B.
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l1 and l2 = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)
l1 = kG
l2 = kG
l1l2 = kG
l1l2 = kG2
✅ The correct answer is option D.
Mond gas is obtained by
partial combusion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
carbonisation of bituminous coal
passing steam over incandescent coke
passing air and a larg
✅ The correct answer is option D.