greater than Carnot cycle
less than Carnot cycle
equal to Carnot cycle
none of these
✅ The correct answer is option B.
Mechanical Engineering MCQs
The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)
Ru x T
1.5 Ru x T
2 Ru x T
3 Ru x T
✅ The correct answer is option B.
Hydrogen is the __________ substance.
lightest
heaviest
✅ The correct answer is option A.
In corrosion resistant properties, bronzes are __________ to brasses.
superior
inferior
✅ The correct answer is option A.
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to
reduce vibration
reduce slip
ensure uniform loading
ensure proper alignmen
✅ The correct answer is option C.
Thermit welding is often used in
replacing broken gear teeth
repairing broken shears
joining rails, truck frames and locomotive frames etc.
all of the above
✅ The correct answer is option D.
Which of the following screw thread is adopted for power transmission in either direction?
Acme threads
Square threads
Buttress threads
Multiple threads
✅ The correct answer is option B.
In an open pair, the two elements of a pair
have a surface contact when in motion
have a line or point contact when in motion
are kept in contact by the action of external forces, when in motion
are not held together
✅ The correct answer is option D.
When one of the links of a kinematic chain is fixed, the chain is known as a
structure
mechanism
inversion
machine
✅ The correct answer is option B.