POWER SYSTEMS QUIZ

If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines?

4

6

5

3

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Deflectors are provided in

Francis turbine.

Kaplan turbine.

propeller turbine.

Pelton wheel.

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The value of diversity factor is

less than 1

1

greater than 1

0

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An ACSR conductor has internal inductance 0.05 mH/Km for µr = 1. If this ACSR is replaced with another having µr = 2, then find the internal inductance?

0.05 mH/Km

0.1 mH/Km

0 mH/Km

0.025 mH/Km

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The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called

stopping time.

coasting time.

settling time.

damping time.

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For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to

1 / V2.

V2.

1 / V.

V.

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Which of the following statements is/are true? Due to corona,

All of these

power loss increases

charging current increases

interference increases

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The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line?

1500 Ω

1000 Ω

3000 Ω

750 Ω

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Operating time of pumped storage plant is

low

very high

high

can't say

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The most suitable circuit breaker for short line fault without switching resistor is

air blast circuit breaker.

SF6 breaker.

oil circuit breaker.

none of these.

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