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Power Plant Economics Questions and Answers

1.

The load consists of railways, trolley buses, etc. with wide variations during peak and off-peak hours is known as

Exam Year(s)

DSSSB - 2023,

Answer: D

A load of railways, trolley buses and the like, with wide variations during peak and off-peak hours, is a traction load. Domestic load is that of lights and fans in homes, commercial load that of shops and offices, and industrial load that of factories, none of which is described by the variations of railways and trolley buses.

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2.

What is the advantage of wind power plant?

Exam Year(s)

DSSSB - 2023,

Answer: A

The advantage of a wind power plant given by the key is that there is no need for transportation facilities, because the wind is available everywhere and no fuel has to be carried to the plant. The availability of wind energy is not constant, wind conversion systems make noise from the blades and gearbox, and the structure is not described as simple in the key, so the other statements are wrong.

A wind plant needs no fuel, so there is no fuel to carry to it; its drawbacks are that wind is intermittent, the plant needs a large site and the blades and gearbox make noise.

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3.

Identify one of the merits of tidal power plant?

Exam Year(s)

DSSSB - 2023,

Answer: C

The merit of a tidal power plant is that its power generation is not affected by rain, since tides come from the gravitational pull of the Moon and the Sun and not from rainfall. The initial cost of a tidal plant is high, construction at sea is difficult, and the power output does fluctuate with the tide, so the other statements are not merits.

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