Mechanical Engineering MCQs

Page No. 169

The flow rate in gear pump___________________?


aincreases with increase in pressure


bdecreases with increase in pressure


cmore or less remains constant with in-crease in pressure


dunpredictable



Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between_________________?


alift and resultant force


bdrag and resultant force


clift and tangential force


dlift and drag



Casting of a centrifugal pump is designed so as to minimize________________?


afriction loss


bcavitation


cstatic head


dloss of kinetic energy



High specific speed of turbine implies it is__________________?


apropeller turbine


bFrancis turbine


cimpulse turbine


dany one of the above


View Answer propeller turbine

The maximum number of jets generally employed in impulse turbine without jet interference is________________?


a4


b6


c8


d12


View Answer 6

Any change in load is adjusted by adjusting following parameter on turbine______________?


anet head


babsolute velocity


cblade velocity


dflow


View Answer flow

Indicator diagram of a reciprocating pump is a graph between________________?


aflow vs swept volume


bpressure in cylinder vs swept volume


cflow vs speed


dpressure vs speed



Medium specific speed of a pump implies it is_________________?


acentrifugal pump


bmixed flow pump


caxial flow pump


dany one of the above


View Answer mixed flow pump

Motion of a liquid in a volute casing of a centrifugal pump is an example of____________________?


arotational flow


bradial


cforced spiral vortex flow


dspiral vortex flow


View Answer spiral vortex flow

The horse power required in above case will be___________________?


asame


b0.75 B.H.P.


cB.H.P./0.75


d1.5 B.H.P.


View Answer 0.75 B.H.P.

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