[A]. before the economiser
[B]. before the superheater
[C]. between the economiser and chimney
[D]. none of these
✅ The correct answer is option C.
Mechanical Engineering MCQs
An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and
[A]. chromium
[B]. silicon
[C]. manganese
[D]. magnesium
✅ The correct answer is option C.
PERT is an event oriented technique.
[A]. Correct
[B]. Incorrect
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✅ The correct answer is option A.
Morse test can be conducted for
[A]. petrol engines
[B]. diesel engines
[C]. multi-cylinder engines
[D]. all of these
✅ The correct answer is option C.
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)
[A]. less than 20 d
[B]. greater than 30 d
[C]. between 20 d and 30 d
[D]. equal to inside diameter of pipe
✅ The correct answer is option C.
In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.
[A]. True
[B]. False
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✅ The correct answer is option A.
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
[A]. equal to
[B]. equal and opposite to
[C]. less than
[D]. greater than
✅ The correct answer is option B.
When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
[A]. simple pendulum
[B]. compound pendulum
[C]. torsional pendulum
[D]. second’s pendulum
✅ The correct answer is option B.
The ratio of the useful heat drop to the isentropic heat drop is called
[A]. condenser efficiency
[B]. nozzle efficiency
[C]. boiler efficiency
[D]. vacuum efficiency
✅ The correct answer is option B.
When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
[A]. True
[B]. False
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✅ The correct answer is option A.