Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

Its density is less
It provides suitable meniscus for the inclined tube
It provides longer length for a given pressure difference
Its vapour pressure is low

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Hydraulics and Fluid Mechanics in ME
Slip of a reciprocating pump is negative, when

Delivery pipe is long and pump is running at high speeds
Suction pipe is short and pump is running at low speeds
Suction pipe is short and delivery pipe is long and the pump is running at low speeds
Suction pipe is long and delivery pipe is short and the pump is running at high speeds

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