one-fourth
one-third
two-fifth
one-half
✅ The correct answer is option C.
Mechanical Engineering MCQs
When steam after doing work in the cylinder passes into a condenser, the engine is said to be a
slow speed engine
vertical steam engine
condensing steam engine
non-condensing steam e
✅ The correct answer is option C.
The general gas energy equation is (where Q1 – 2 = Heat supplied, dU = Change in internal energy, and W1 – 2 = Work done in heat units)
Q1 – 2 = dU + W1 – 2
Q1 – 2 = dU – W1 – 2
Q1 – 2 = dU/W1 – 2
Q1 – 2 = dU x W1 – 2
✅ The correct answer is option A.
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is
μ W R cosec α
μ W R cosec α
μ W R cosec α
μ W R cosec α
✅ The correct answer is option A.
Free air is the air at atmospheric conditions at any specific location.
TRUE
FALSE
✅ The correct answer is option A.
In Meyer’s expansion valve, the expansion valve is driven by an eccentric having an angle of advance from
50° – 60°
60° – 70°
70° – 80°
80° – 90°
✅ The correct answer is option D.
During dehumidification process, the relative humidity
remains constant
increases
decreases
✅ The correct answer is option C.
In a Woolf type compound engine, the high pressure and low pressure cylinders
have common piston rod
are set at 90°
have separate piston rod
are set in V – arrange
✅ The correct answer is option C.
The maximum bending moment of a simply supported beam of span l and carrying a point load W at the centre of beam, is
Wl/4
Wl/2
Wl
Wl2/4
✅ The correct answer is option A.
The entropy of water at 0°C is assumed to be
1
0
-1
10
✅ The correct answer is option B.