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Mechanical Engineering - Hydraulic Machines

Exercise : Hydraulic Machines - Section 1
16.
Slip of a reciprocating pump is defined as the
ratio of actual discharge to the theoretical discharge
sum of actual discharge and the theoretical discharge
difference of theoretical discharge and the actual discharge
product of theoretical discharge and the actual discharge
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The efficiency of a centrifugal pump will be maximum when the blades are bent backward.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Multi-stage centrifugal pumps are used to
give high discharge
produce high heads
pump viscous fluids
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The specific speed of a centrifugal pump, delivering 750 litres of water per second against a head of 15 metres at 725 r.p.m., is
24.8 r.p.m.
48.2 r.p.m
82.4 r.p.m.
248 r.p.m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in metres, and Hd = Delivery head in metres)
wQHs
wQHd
wQ(Hs - Hd)
wQ(Hs + Hd)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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