Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

0.75 Q
1.5 Q
Q/0.75
Same quantity of liquid

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Hydraulics and Fluid Mechanics in ME
The purpose of a surge tank is

All of these
To eliminate water hammer possibilities
To control the pressure variations due to rapid changes in the pipe line flow
To regulate flow of water to turbines by providing necessary retarding head of water

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Hydraulics and Fluid Mechanics in ME
A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

Loss of head and discharge of both the pipes is same
Diameter of both the pipes is same
Loss of head and velocity of flow in both the pipes is same
Length of both the pipes is same

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