ELECTRICAL CABLES QUIZ

The bedding on a cable consists of

Hessian cloth

None of the listed here

Both Hessian cloth and Jute

Jute

TRUE ANSWER : ?
YOUR ANSWER : ?

The thickness of metallic shielding on cables is usually

0.2 to 0.4 mm

3 to 5 mm

40 to 60 mm

0.04 mm

TRUE ANSWER : ?
YOUR ANSWER : ?

In a cable, the maximum stress under operating conditions is at

Insulation layer

Conductor surface

Sheath

Armour

TRUE ANSWER : ?
YOUR ANSWER : ?

If the length of a cable is doubled, its capacitance

Becomes double

Becomes one-fourth

None of the listed here

Becomes one-half

TRUE ANSWER : ?
YOUR ANSWER : ?

A cable carrying alternating current has

Hysteresis, leakage, copper and friction losses

Hysteresis and leakage losses only

Hysteresis losses only

Hysteresis, leakage and copper losses only

TRUE ANSWER : ?
YOUR ANSWER : ?

The insulating material should have

Low permittivity

High dielectric strength

High resistivity

All of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

The breakdown of insulation of the cable can be avoided economically by the use of

Insulating materials with different dielectric constants

Both Inter-sheaths and Insulating materials with different dielectric constants

None of the listed here

Inter-sheaths

TRUE ANSWER : ?
YOUR ANSWER : ?

High tension cables are generally used up to

66 kV

33 kV

132 kV

11 kV

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following insulation is used in cables?

Rubber

Varnished cambric

Paper

All of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

The relative permittivity of rubber is

Between 2 and 3

None of the listed here

Between 5 and 7

Between 8 and 9

TRUE ANSWER : ?
YOUR ANSWER : ?

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