Mechanical Engineering Mechanical Quiz 1 A carburettor is used to supply A) petrol, air and lubricating oilB) air and dieselC) petrol and lubricating oilD) petrol and air If in the equation pv^n = C, the value of n = ∝ , then the process is called A) constant volume processB) adiabatic processC) constant pressure processD)isothermal process When the sleeve of a Porter governor moves upwards, the governor speed A) increasesB) decreasesC) remains unaffectedD) first increases and then decreases The metacentric height is the distance between the A) centre of gravity of the floating body and the centre of buoyancyB) centre of gravity of the floating body and the metacentreC) metacentre and centre of buoyancyD) original centre of buoyancy and new centre of buoyancy In a reciprocating air compressor, the compression work per kg of air A) increases as clearance volume increasesB) decreases as clearance volume increasesC) is independent of clearance volumeD) increases as clearance volume decreases The ratio of driving tensions in V-belt drives is __________ flat belt drives. A) equal toB) sin α times more thanC) sin α times less thanD) cosec α times more than If the net positive suction head (NPSH) requirement for the pump is not satisfied, then A) no flow will take placeB) cavitation will be formedC) efficiency will be lowD) excessive power will be consumed When a thin cylindrical shell is subjected to an internal pressure, there will be A) a decrease in diameter and length of the shellB) an increase in diameter and decrease in length of the shellC) a decrease in diameter and increase in length of the shellD) an increase in diameter and length of the shell The yield point in static loading is __________ as compared to fatigue loading. A) higherB) lowerC) sameD) zero V-belts are usually used for A) long drivesB) short drivesC) long and short drivesD) none of these જવાબ માટે અહીં ક્લિક કરો.
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