P&H 25 qustin

A fluid is a substance which is capable of _____

• flowing
• control
• Utilization
• Power transmission

The pneumatic system employs _____ as the fluid medium

• liquid
• gas
• compressed air
• petroleum oil

The spacing between molecules is extremely large in_____

• diesel
• water
• air
• petrol

As the volume of the gas decreases the temperature ______

• Increases
• Decreases
• constant
• none

The unit of kinematic viscosity is _____

• Poise(P)
• Kg/m/s
• strokes(st)
• N.S/m2

Viscosity of a gas increases with _____pressure

• Increases
• Decreases
• no effect
• Adverse effect

The principle of increases the pressure of a definite volume of air by reducing volume in an enclose change.This compressor called as_____

• Positive displacement
• Dynamic
• Radial flow
• Centrifugual

The filter elements made of synthetic materials which are designed to remove _____

• heavier foreign particles
• moisture
• very small particle
• oil content in the air

Copper,steel, iron pipes joined by means of ___

• threaded connections
• brazed
• welded
• all of the above

The component which converts supply energy into useful work in pneumatics is _____

• actuator
• add the lubricant in the form of fine mist
• control valves
• FRL unit