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MCQs

Total Questions : 322 | Page 3 of 33 pages
Question 21. For high value of diversity factor, a power station of given installed capacity will be in a position to supply
  1.    Less number of consumers
  2.    More number of consumers
  3.    Neither (A) nor (B)
  4.    Either (A) or (B)
 Discuss Question
Answer: Option B. -> More number of consumers
Question 22. Most efficient plants are normally used as
  1.    peak load plants
  2.    base load plants
  3.    either (A) or (B)
  4.    none of the above
 Discuss Question
Answer: Option B. -> base load plants
Question 23. Which of the following plants is almost inevitably used as base load plant ?
  1.    Diesel engine plant
  2.    Gas turbine plant
  3.    Nuclear power plant
  4.    Pumped storage plant
 Discuss Question
Answer: Option C. -> Nuclear power plant
Question 24. Large capacity generators are invariably
  1.    water cooled
  2.    natural air cooled
  3.    forced air cooled
  4.    hydrogen cooled
 Discuss Question
Answer: Option D. -> hydrogen cooled
Question 25. In ______ fuel transportation cost is least.
  1.    nuclear power plants
  2.    diesel generating plants
  3.    steam power stations
  4.    none of the above
 Discuss Question
Answer: Option A. -> nuclear power plants
Question 26. Generators for peak load plants are usually designed for maximum efficiency at
  1.    25 to 50 percent full load
  2.    50 to 75 percent full load
  3.    full load
  4.    25 percent overload
 Discuss Question
Answer: Option B. -> 50 to 75 percent full load
Question 27. Which of the following is the disadvantage of a synchronous condenser ?
  1.    High maintenance cost
  2.    Continuous losses in motor
  3.    Noise
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 28. A synchronous condenser is virtually which of the following?
  1.    Induction motor
  2.    Under excited synchronous motor
  3.    Over excited synchronous motor
  4.    D.C. generator
 Discuss Question
Answer: Option C. -> Over excited synchronous motor
Question 29. In a distribution system, in order to improve power factor, the synchronous capacitors are installed
  1.    at the receiving end
  2.    at the sending end
  3.    either (A) or (B)
  4.    none of the above
 Discuss Question
Answer: Option A. -> at the receiving end
Question 30. In two part tariff, variation in load factor will affect
  1.    fixed charges
  2.    operating or running charges
  3.    both (A) and (B)
  4.    either (A) or (B)
 Discuss Question
Answer: Option B. -> operating or running charges

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