TRUE
FALSE
✅ The correct answer is option A.
Mechanical Engineering MCQs
The gas turbine cycle with regenerator improves
thermal efficiency
work ratio
avoids pollution
none of these
✅ The correct answer is option A.
The shell of the Cochran boiler is made hemispherical
to give maximum space and strength
to withstand the pressure of steam inside the boiler
both (a) and (b)
none of the above
✅ The correct answer is option C.
Stoichiometric ratio is
chemically correct air-fuel ratio by weight
chemically correct air-fuel ratio by volume
actual air-fuel ratio for maximum efficiency
none of the above
✅ The correct answer is option B.
The bending moment diagram for a simply supported beam loaded in its centre is
a right angled triangle
an issoscles triangle
an equilateral triangle
a rectangle
✅ The correct answer is option B.
The amount of water evaporated in kg per kg of fuel burnt is called
evaporative capacity of a boiler
equivalent evaporation from and at 100° C
boiler efficiency
none of these
✅ The correct answer is option A.
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is __________ the relative velocity of steam at inlet tip of the blade.
equal to
less than
greater than
✅ The correct answer is option A.
The acceleration of a particle moving with simple harmonic motion is __________ at themean position.
zero
minimum
maximum
✅ The correct answer is option A.
Spheroidal grey cast iron has graphite flakes.
TRUE
FALSE
✅ The correct answer is option A.
A single degree of freedom system is given by , with usual notations. It represents
free vibration with damping
free vibration without damping
forced vibration with damping
forced vibration witho
✅ The correct answer is option C.