POWER SYSTEMS QUIZ

If we increase the spacing between the phase conductors, the line capacitance

decreases

None of these

remains unaffected

increases

TRUE ANSWER : ?
YOUR ANSWER : ?

A steam power generation has an overall efficiency of 20 %. 0.6 Kg of coal is burnt per kWh of electrical energy generated. Calculated the calorific value of fuel

7166.67 KCal / Kg.

7000 KCal / Kg.

7562 KCal / Kg.

7268.45 KCal / Kg.

TRUE ANSWER : ?
YOUR ANSWER : ?

Characteristics of arc quenching medium is/are

Non flammable

All of these

High thermal conductivity

High dielectric strength

TRUE ANSWER : ?
YOUR ANSWER : ?

The value of diversity factor is

less than 1

0

greater than 1

1

TRUE ANSWER : ?
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A 1-phase transmission line has an impedance (4 + 3j ) Ω. Find the power factor of the load for zero voltage regulation?

0.8 lag

0.6 lag

0.6 lead

0.8 lead

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The sequence components of the fault current are as follows: IR1 = j1.5 pu, IR2 = -j0.5 pu, IR0 = -j1. The type of fault is

LG

LL

LLG

LLL

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following transmission line is most practically used in load flow analysis?

either 1 or 2

Nominal ∏

nether 1 nor 2

Nominal T

TRUE ANSWER : ?
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If the frequency is increased, then skin effect will

increases

remains unaffected

decreases

any of the above

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Which one of following fuels is used by slow thermal nuclear reaction for power generation

U238.

Th232.

Pu239.

U235.

TRUE ANSWER : ?
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The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

A resistance of 100 ohm.

A resistance of j100/3 ohm.

A resistance of j300 ohm.

A resistance of 100/3 ohm.

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