THALIR_INNO_QUIZ_MAY-5TH-2023(CW18)

Speed of actuator depends on fluid flow , and actuator speed will be __________ to the fluid flow.

• Inversly proportional

• Directly proportional

Pump which is not suitable for a hydraulic system is

• Centrifugal pump

• Positive displacement pump

• Gear pump

• Vane pump

What do safety relief valves protect people and plant from?

• Over Pressurisation

• Sudden changes in system veocity

• Temperature excursion

• Excess flow

Rotary motion in a hydraulic power unit is achieved by using

• hydraulic cylinder

• pneumatic cylinder

• both hydraulic and pneumatic cylinder

• None of the above

Pressure drop in hydraulic system will always produce the _______

The Bernoulli's equation is based on the assumption that

• There is no loss of energy of the liquid flowing

• The velocity of flow is uniform across any cross-section of the pipe

• No force except gravity acts on the fluid

• All the above

A nozzle placed at the end of a water pipe line discharges water at a

• Low pressure

• High pressure

• Low velocity

• High velocity

The Mercury does not wet the glass. this is due to the property of the liquid known as

• Cohesion

• Adhesion

• Viscosity

• Surface tension.

The process of diffusion of one liquid into the other through a semi permeable membrane is called

• Viscosity

• Osmosis

• Surface tension

• Cohesion

Reciprocating pumps are also called as______

• Force Pumps

• Mass pumps

• Heat Pumps

• Speed Pumps