POWER SYSTEMS QUIZ

In a nuclear reator thermal energy is obtained from

fission of radioactive material.

fusion of radioactive material.

burning of fuel rods in oxygen.

all of above.

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YOUR ANSWER : ?

A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. The line is connected to a generator delivering 200 MW. Find the load angle with out and with compensation respectively?

30° and 26°

26° and 30°

30° and 45°

45° and 26°

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A generating station has a maximum demand of 50 MW a load factor of 60 %, a plant capacity factor of 45 % and if the plant while running as per schedule were fully loaded. The daily energy produced will be

720 MW.

740 MW.

730 MW.

710 MW.

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YOUR ANSWER : ?

Attenuation occurs due to

conductance

inductance

resistance

both 1 and 3

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The area under a flow duration curve represents

total power available.

maximum rate of run-off during the period.

total of units of energy available.

total quantity of run-off during that period.

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YOUR ANSWER : ?

Which of the following methods is/are used for reactive or voltage compensation

shunt capacitor

All of these

generation excitation control

series capacitor

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On what factors does the selection of a water turbine depend

Working head.

All of above.

Speed.

Nature of load.

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Counter poise is used for

reduce losses

proper discharging of lighting surges

more surge impedance

less surge impedance

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Making current is a------------ value?

average

peak value

any of the above

RMS

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When a transformer is loaded, the secondary terminal voltage gains. That means power factor is

lagging.

leading.

zero.

unity.

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