TRANSMISSION & DISTRIBUTION QUIZ

Transmission line insulators are made of

porcelain

P.V.C.

glass

iron

TRUE ANSWER : ?
YOUR ANSWER : ?

High voltages for transmission power is economically available from

Ac currents

Carrier currents

None of the listed here

Dc currents

TRUE ANSWER : ?
YOUR ANSWER : ?

With the increase in the values of voltage and power factor, the cost of transmission line conductor

Increases exponentals

Decreases

Increases

Is unaffected

TRUE ANSWER : ?
YOUR ANSWER : ?

For operating voltages beyond 66 kv, the cable used are

None of the listed here

Oil filled

S. L. Type

Belted type

TRUE ANSWER : ?
YOUR ANSWER : ?

By using bundle conductors, the critical voltage for the formation of corona will

Not occur

Remains same

Decrease

Increase

TRUE ANSWER : ?
YOUR ANSWER : ?

As the thickness of the insulation of a cable increases, its capacitance

Decreases

None of the listed here

Increases

Remains same

TRUE ANSWER : ?
YOUR ANSWER : ?

In capacitance grading of cables, we use

A large number of dielectrics

One dielectric

Two or three dielectrics

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the demerit of a 'constant voltage transmission system'?

Increase of short-circuit current of the system

Improvement of power factor at times of moderate and heavy loads

Possibility of better protection for the line due to possible use of higher terminal reactants

Availability of steady voltage at all loads at the line terminals

TRUE ANSWER : ?
YOUR ANSWER : ?

Skin effect is noticeable only at _____ frequencies.

Audio

High

Low

All

TRUE ANSWER : ?
YOUR ANSWER : ?

The loads on distributors systems are generally

Balanced

Unbalanced

None of these

Either of the above

TRUE ANSWER : ?
YOUR ANSWER : ?