Ramsay Test Technical Aptitude & Knowledge 5

Question 1

In a closed loop of piping, a centrifugal pump's main job is to:

Accepted Answer

Move fluid by adding velocity and pressure

Answer

A centrifugal pump imparts velocity to fluid, raising its pressure to move it.

Question 2

Cavitation in a pump is caused by:

Accepted Answer

Vapor bubbles forming and collapsing in the fluid

Answer

Low pressure forms vapor bubbles that collapse violently, causing cavitation damage.

Question 3

A check valve is designed to:

Accepted Answer

Allow flow in one direction only

Answer

A check valve permits flow one way and prevents backflow.

Question 4

A V-belt drive transmits power primarily through:

Accepted Answer

Friction between the belt and pulley grooves

Answer

V-belts grip the sides of grooved pulleys and transmit power by friction.

Question 5

Which type of bearing is best suited to support a rotating shaft under radial load?

Accepted Answer

Ball bearing

Answer

Ball bearings carry radial loads while allowing low-friction rotation.

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