less than
more than
✅ The correct answer is option A.
Mechanical Engineering MCQs
Dehydration is the process of removing water vapour from the surrounding air.
TRUE
FALSE
✅ The correct answer is option A.
During heating and dehumidification process, dry bulb temperature
remains constant
increases
decreases
✅ The correct answer is option B.
The material commonly used for machine tool bodies is
mild steel
aluminium
brass
cast iron
✅ The correct answer is option D.
The two rows of cylinders in a ‘V’ type engine are generally arranged at
45°
60°
90°
130°
✅ The correct answer is option B.
Tool life is generally better when
grain size of the metal is large
grain size of the metal is small
hard constituents are present in the microstructure of the tool material
none of the above
✅ The correct answer is option A.
The strain energy stored in a spring, when subjected to maximum load, without suffering permanent distortion, is known as
impact energy
proof resilience
proof stress
modulus of resilience
✅ The correct answer is option B.
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is
1-Feb
1-Feb
1
2
✅ The correct answer is option B.
The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
1.02
1.32
1.66
1.82
✅ The correct answer is option B.
A closed cycle gas turbine works on Joule’s cycle.
TRUE
FALSE
✅ The correct answer is option A.