1. A steam power stations basically work on the
(a) thermodynamic cycle.
(b) Rankin cycle.
(c) Vapor pressure cycle.
(d) Carton cycle.
Answer
2. The overall efficiency of modern steam power station is about
(a) 15%.
(b) 29%.
(c) 47%.
(d) 59%.
Answer
3. Which of the following power plant has highest efficiency?
(a) Steam power plant.
(b) Hydro power plant.
(c) Nuclear power plant.
(d) Diesel power plant.
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4. Which of the following power plant has least efficiency?
(a) Nuclear power plant.
(b) Hydro power plant.
(c) Steam power plant.
(d) Diesel power plant.
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5. The major heat loss in a steam power stations occur in
(a) condenser.
(b) compressor.
(c) turbine.
(d) super heater.
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6. Low power factor is usually not due to
(a) Discharge lamps.
(b) Arc lamps.
(c) Induction lamps.
(d) Incandescent lamps.
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7. The area under the load curve represents
(a) load current.
(b) connected load.
(c) energy consumed.
(d) maximum demand.
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8. What does the highest points on the daily load curve represents?
(a) average load.
(b) based load.
(c) maximum demand.
(d) load factor.
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9. An over excited synchronous motor on no load is known as
(a) phase advancer.
(b) synchronous condenser.
(c) exciter.
(d) alternator.
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10. In hydro power plant, surge tank is provided for the protection of
(a) turbine.
(b) bulb.
(c) penstock.
(d) dam.
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11. Salvage value of the plant is always
(a) positive.
(b) negative.
(c) zero.
(d) any of the above.
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12. When power factor is improved, the kilowatt capacity of alternator is
(a) increases.
(b) decreases.
(c) remain same.
(d) none of the above.
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13. To improve the power factor of a three phase load, the capacitors are mainly connected in
(a) star.
(b) delta.
(c) series.
(d) any of the above.
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14. Direct conversion of heat into electric power is possible through
(a) fuel cell.
(b) batteries.
(c) thermionic converter.
(d) all of the above.
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15. Which of the following power plant generally operates at high speed?
(a) Diesel power plant.
(b) Nuclear Power Plant.
(c) Stream Power plant.
(d) Hydro Power plant.
Answer