POWER SYSTEMS QUIZ

Equal area criterion gives the information regarding

absolute stability

stability region

swing curves

relative stability

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YOUR ANSWER : ?

When is the ferranti effect on long overhead lines experienced?

The power factor is unity

The line is lightly loaded

The line is fully loaded

The line is heavily loaded

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YOUR ANSWER : ?

Which of the following is/are the disadvantages of phase modifiers?

All of these

It requires more maintenance because of running equipment

Initial cost of synchronous phase modifier is higher

It consumes both active and reactive power

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Nuclear fission means

graphite.

moderator.

breaking up of nuclear of heavy atoms into nearly equal parts.

combination of two light nuclei.

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The average thermal efficiency of a modern nuclear power plant is about

40 %.

60 %.

30 %.

80 %.

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A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be

49 kVA.

89.22 kVA.

70 kVA.

35 kVA.

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YOUR ANSWER : ?

In transmission lines distribution constants are

resistance

inductance and capacitance

inductance and resistance

both 1 and 2

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One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is

120 MWhr

140 MWhr

135.3 MWhr

130.2 MWhr

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Pipes carrying steam are generally of

aluminium.

steel.

cobalt.

cast iron.

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A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F?

0.5 F

4 F

2 F

1 F

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