pa = pm/K
pa = pm x K
pa = K/pm
pa = pm + K
✅ The correct answer is option B.
Mechanical Engineering MCQs
In diesel engines, the ignition takes place due to the heat produced in the engine cylinder at the end of compression.
Correct
Incorrect
✅ The correct answer is option A.
The plain milling machine is more rigid and heavier in construction than a universal milling machine of the same size.
Correct
Incorrect
✅ The correct answer is option A.
One kg of carbon monoxide requires 4/7 kg of oxygen and produces
11/3 kg of carbon dioxide gas
7/3 kg of carbon monoxide gas
11/7 kg of carbon dioxide gas
8/3 kg of carbon monox
✅ The correct answer is option C.
The centre of gravity of a right angled triangle lies at its geometrical centre.
Correct
Incorrect
✅ The correct answer is option B.
The maximum efficiency of a lifting machine is
1/m
V.R./m
m/V.R.
1/(m x V.R.)
✅ The correct answer is option D.
The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)
sin φ + sin α =
cos φ – sin α =
cot φ – cot α =
tan φ + cot α =
✅ The correct answer is option C.
For the same maximum pressure and heat input, the exhaust temperature of petrol engine is __________ than that of diesel engine.
less
more
✅ The correct answer is option B.
The number of exhaust manifolds in a V-6 engine are
one
two
four
eight
✅ The correct answer is option B.
Acetylene gas is stored in cylinders in
solid form
gaseous form
liquid form
any one of these
✅ The correct answer is option C.