Transmission and Distribution - EEE Questions and Answers

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For transmission of power over a distance of 200 km, the transmission voltage should be

A.

132 kV

B.

66 kV

C.

33 kV

D.

11 kV

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The steel used in steel cored conductors is usually

A.

Alloy steel

B.

Stainless steel

C.

Mild steel

D.

High speed steel

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In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to

A.

boost the generated voltage

B.

balance loads on both sides of the neutral

C.

make both machine^ run as unloaded motors

D.

equalize voltages on the positive and negative outers

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The angular displacement between two interconnected stations is mainly due to

A.

Armature reactance of both alternators

B.

Reactance of the interconnector

C.

Synchronous reactance of both the alternators

D.

All of the above

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Which of the following is not a constituent for making porcelain insulators?

A.

Quartz

B.

Kaolin

C.

Felspar

D.

Silica

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In transmission lines the cross-arms are made of

A.

Copper

B.

Wood

C.

R.C.C.

D.

Steel

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The underground system cannot be operated above

A.

440 V

B.

11 V

C.

33 V

D.

66 V

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For transmission of power over a distance of 500 km, the transmission voltage should be in the range

A.

150 to 220 kV

B.

100 to 120 kV

C.

60 to 100 kV

D.

20 to 50 kV

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Which of the following D.C. distribution system is the simplest and lowest in first cost?

A.

Radial system

B.

Ring system

C.

Interconnected system

D.

None of the above