Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering Page-9 section-7

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81.
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, H_s = Suction head in meters and H_d = Delivery head in meters)

A. wQH_s

B. wQH_d

C. wQ (H_s - H_d)

D. wQ (H_s + H_d)

A. Closed

B. Open

C. Depends on starting condition and flow desired

D. Could be either open or closed

A. Waste valve closes suddenly

B. Supply pipe is long

C. Supply pipe is short

D. Ram chamber is large

A. $$\frac{{{\text{waV}}}}{{2{\text{g}}}} \times \sin \theta $$

B. $$\frac{{{\text{waV}}}}{{\text{g}}} \times \sin \theta $$

C. $$\frac{{{\text{wa}}{{\text{V}}^2}}}{{2{\text{g}}}} \times \sin 2\theta $$

D. $$\frac{{{\text{wa}}{{\text{V}}^2}}}{{\text{g}}} \times \sin 2\theta $$

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