Hydraulics and Fluid Mechanics in ME
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

It is easier to see through the glass tube
It is not possible to conduct this experiment with any other tube
Glass tube is cheaper than a metallic tube
All of these

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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 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
Suction pipe is short and pump is running at low speeds

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Hydraulics and Fluid Mechanics in ME
In an inward flow reaction turbine

The water enters the wheel at the outer periphery and then flows towards the center of the wheel
The flow of water is partly radial and partly axial
The water enters at the center of the wheel and then flows towards the outer periphery of the wheel
The water flows parallel to the axis of the wheel

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