Hydraulics and Fluid Mechanics in ME
The increase of temperature results in

increase in viscosity of liquid
decrease in viscosity of liquid
increase in viscosity of gas
decrease in viscosity of gas

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Hydraulics and Fluid Mechanics in ME
The hammer blow in pipes occurs when

The flow of fluid through the pipe is suddenly brought to rest by closing of the valve
The pipe bursts under high pressure of fluid
There is excessive leakage in the pipe
The flow of fluid through the pipe is gradually brought to rest by closing of the valve

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

None of these
Power produced by the turbine to the energy actually supplied by the turbine
Work-done on the wheel to the energy (or head of water) actually supplied to the turbine
Actual work available at the turbine to energy imparted to the wheel

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