high speed steel
carbon steel
wrought iron
all of these
✅ The correct answer is option D.
Mechanical Engineering MCQs
A steel with 0.8% carbon and 100% pearlite is called
eutectoid steel
hypo-eutectoid steel
hyper-eutectoid steel
none of these
✅ The correct answer is option A.
The resilience of a bolt may be increased by
increasing its shank diameter
increasing its length
decreasing its shank diameter
decreasing its length
✅ The correct answer is option B.
The unit of Young’s modulus is same as that of stress.
TRUE
FALSE
✅ The correct answer is option A.
Which of the following iron exists at 910° C?
α-iron
β-iron
γ-iron
δ-iron
✅ The correct answer is option A.
A gas turbine used in air-craft should have low weight and small frontal area.
Correct
Incorrect
✅ The correct answer is option A.
The damper in a steam boiler is provided to control the draught (i.e. rate of flow of air) and thus regulate the rate of generation of steam.
Correct
Incorrect
✅ The correct answer is option A.
Which of the following are boiler accessories ?
economiser
superheater
both (a) and (b)
none of these
✅ The correct answer is option C.
The reduced ambient air cooling system has
one cooling turbine and one heat exchanger
one cooling turbine and two heat exchangers
two cooling turbines and one heat exchanger
two cooling turbines a
✅ The correct answer is option C.
Notching is the operation of
cutting a sheet of metal in a straight line along the length
removal of metal to the desired shape from the edge of a plate
cutting a sheet of metal through part of its length and then bending the cut portion
bending a sheet of met
✅ The correct answer is option B.