ELECTRICAL CABLES QUIZ

Dielectric strength of rubber is around

15 kV/mm

25 kV/mm

5 kV/mm

30 kV/mm

TRUE ANSWER : ?
YOUR ANSWER : ?

Copper as conductor for cables is used as

Hard drawn

Annealed

Alloy with chromium

Hardened and tempered

TRUE ANSWER : ?
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The thickness of metallic shielding on cables is usually

0.04 mm

0.2 to 0.4 mm

40 to 60 mm

3 to 5 mm

TRUE ANSWER : ?
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In case of three core flexible cable the color of the neutral is

Red

Blue

Brown

Black

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The advantage of oil filled cables is

No ionization, oxidation and formation of voids

All of the listed here

More perfect impregnation

Smaller overall size

TRUE ANSWER : ?
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In a cable the voltage stress is maximum at

Core of the conductor

Insulator

Sheath

Surface of the conductor

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In cables the charging current

Leads the voltage by 90°

Lags the voltage by 90°

Lags the voltage by 180°

Leads the voltage by 180°

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In the cables, sheaths are used to

Prevent the moisture from entering the cable

Provide proper insulation

Provide enough strength

None of the listed here

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Which of the following protects a cable against mechanical injury?

Armouring

Bedding

None of the listed here

Sheath

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A cable carrying alternating current has

Hysteresis, leakage, copper and friction losses

Hysteresis losses only

Hysteresis and leakage losses only

Hysteresis, leakage and copper losses only

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