Mechanical Engineering Quiz - 1

Mechanical Quiz 1

1. A carburettor is used to supply

A) petrol, air and lubricating oil
B) air and diesel
C) petrol and lubricating oil
D) petrol and air


2. If in the equation pv^n = C, the value of n = ∝ , then the process is called

A) constant volume process
B) adiabatic process
C) constant pressure process
D)isothermal process


3. When the sleeve of a Porter governor moves upwards, the governor speed

A) increases
B) decreases
C) remains unaffected
D) first increases and then decreases


4. The metacentric height is the distance between the

A) centre of gravity of the floating body and the centre of buoyancy
B) centre of gravity of the floating body and the metacentre
C) metacentre and centre of buoyancy
D) original centre of buoyancy and new centre of buoyancy


5. In a reciprocating air compressor, the compression work per kg of air

A) increases as clearance volume increases
B) decreases as clearance volume increases
C) is independent of clearance volume
D) increases as clearance volume decreases


6. The ratio of driving tensions in V-belt drives is __________ flat belt drives.

A) equal to
B) sin α times more than
C) sin α times less than
D) cosec α times more than


7. If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

A) no flow will take place
B) cavitation will be formed
C) efficiency will be low
D) excessive power will be consumed


8. When a thin cylindrical shell is subjected to an internal pressure, there will be

A) a decrease in diameter and length of the shell
B) an increase in diameter and decrease in length of the shell
C) a decrease in diameter and increase in length of the shell
D) an increase in diameter and length of the shell


9. The yield point in static loading is __________ as compared to fatigue loading.

A) higher
B) lower
C) same
D) zero


10. V-belts are usually used for

A) long drives
B) short drives
C) long and short drives
D) none of these

જવાબ માટે અહીં ક્લિક કરો.