High tension cables are generally used up to

Low tension cables are generally used up to

A

200 V

B

500 V

C

700 V

D

1000 V

When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

A

tension in the tight side of the belt

B

tension in the slack side of the belt

C

sum of the tensions on the tight side and slack side of the belt

D

average tension of the tight side and slack side of the belt

The operating voltage of extra high tension cables is upto

A

6.6 kV

B

11 kV

C

33 kV

D

66 kV

The material generally used for armour of high voltage cables is

A

Aluminium

B

Steel

C

Brass

D

Copper

The operating voltage of super-tension cables is up to

A

3.3 kV

B

6.6 kV

C

11 kV

D

33 kV

Pressure cables are generally not used beyond

A

11 kV

B

33 kV

C

66 kV

D

132 kV

Multi-core cables generally use

A

Square conductors

B

Circular conductors

C

Rectangular conductors

D

None of the above

The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension.

A

One-third

B

Two-third

C

Double

D

Three times

The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

A

Equal to

B

Less than

C

Greater than

D

None of these

If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

A

$$\frac{{\text{g}}}{2}$$

B

$$\frac{{\text{g}}}{3}$$

C

$$\frac{{\text{g}}}{4}$$

D

None of these

High tension cables are generally used up to

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