equal to
less than
more than
✅ The correct answer is option B.
Mechanical Engineering MCQs
The ratio of the discharge pressure to the inlet pressure of air is called
compression ratio
expansion ratio
compressor efficiency
volumetric efficiency
✅ The correct answer is option A.
A flitched beam is used to
change the shape of the beam
effect the saving in material
equalise the strength in tension and compression
increase the cross-sec
✅ The correct answer is option C.
The length of a liquid stream while flowing over a weir __________ at the ends of the sill.
expands
does not change
contracts
✅ The correct answer is option C.
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be
same
double
one-half
one-fourth
✅ The correct answer is option B.
When the frictional force helps to apply the brake, then the brake is said to be self-energizing brake.
Correct
Incorrect
✅ The correct answer is option A.
The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)
2gH
H2g
2gH
2gH
✅ The correct answer is option D.
A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is
3.53 kN
33.3 kN
35.3 kN
none of these
✅ The correct answer is option C.
The portion of the blast furnace below its widest cross-section is called
hearth
stack
bosh
throat
✅ The correct answer is option C.
Petrol is distilled at
65° to 220°C
220° to 345°C
345° to 470°C
470° to 550°C
✅ The correct answer is option A.