HYDRAULIC AND PNEUMATICS - Practice Mode

1) Which property in hydraulic oil function is medium for heat transfer?

Shear stability Low volatility Low foaming tendency Good thermal capacity and conductivity

Correct Answer: Good thermal capacity and conductivity

2) Which device is used for handling and removing contamination from hydraulic oil?

Hydraulic filter Actuators Valve Regulator

Correct Answer: Hydraulic filter

3) Which part of double acting cylinder prevents air leakage from cylinder to atmosphere?

Piston seal Rod Seal Piston end Rod end

Correct Answer: Rod Seal

4) What is the defect caused by inter locked air bubbles and pockets in the hydraulic pipe lines and components?

Cavitation Static pressure Vapour Pressure Pressure jerks

Correct Answer: Cavitation

5) What is the cause for oil flow under pressure while passing through the restricted passage?

Increase Heat Decrease Heat Decrease volume Increase pressure

Correct Answer: Increase Heat

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