A. 1
B. 1.5
C. 2
D. 2.5
A. Provided in the discharge line
B. Generally a globe valve
C. Provided to prevent liquid from backing up through the pump when the pump is turned off or
accidently stops running
D. All A., B. and C.
A. Cavitation
B. Low speed of impeller
C. Its operation with delivery valve closed for considerable time after starting the pump
D. Off centering of pump with motor
A. ∂u/∂x = 0
B. ∂(ρu)/∂x = 0
C. (∂u/∂x) = – (∂ρ/∂t)
D. ∂ρ/∂t = 0
A. Long pipe at constant rate
B. Long pipe at decreasing rate
C. Expanding tube at increasing rate
D. Expanding tube at constant rate
A. d
B. 0.5 d
C. 2d
D. 4d
A. Thickness only
B. Outer diameter only
C. Thickness & outer diameter both
D. Inner diameter