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MCQs

Total Questions : 322 | Page 8 of 33 pages
Question 71. An over excited synchronous motor on noload is known as
  1.    synchronous condenser
  2.    generator
  3.    induction motor
  4.    alternator
 Discuss Question
Answer: Option A. -> synchronous condenser
Question 72. In India production and distribution of electrical energy is confined to
  1.    private sector
  2.    public sector
  3.    government sectors
  4.    joint sector
  5.    none of the above
 Discuss Question
Answer: Option B. -> public sector
Question 73. Power plant cannot have single unit of 100 MW.
  1.    Hydroelectric
  2.    Nuclear
  3.    Steam
  4.    Diesel
  5.    Any of the above
 Discuss Question
Answer: Option D. -> Diesel
Question 74. Which of the following devices may be used to provide protection against lightening over voltages ?
  1.    Horn gaps
  2.    Rod gaps
  3.    Surge absorbers
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 75. Which of the following is the disadvantage due to low power factor ?
  1.    Poor voltage regulation
  2.    Increased transmission losses
  3.    High cost of equipment for a given load
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 76. High load factor indicates
  1.    cost of generation per unit power is increased
  2.    total plant capacity is utilised for most of the time
  3.    total plant capacity is not properly utilised for most of the time
  4.    none of the above
 Discuss Question
Answer: Option B. -> total plant capacity is utilised for most of the time
Question 77. Annual depreciation as per straight line method, is calculated by
  1.    the capital cost divided by number of year of life
  2.    the capital cost minus the salvage value, is divided by the number of years of life
  3.    increasing a uniform sum of money per annum at stipulated rate of interest
  4.    none of the above
 Discuss Question
Answer: Option B. -> the capital cost minus the salvage value, is divided by the number of years of life
Question 78. By the use of which of the following power factor can be improved ?
  1.    Phase advancers
  2.    Synchronous compensators
  3.    Static capacitors
  4.    Any of the above
 Discuss Question
Answer: Option D. -> Any of the above
Question 79. Annual depreciation cost is calculated by
  1.    sinkingfund method
  2.    straight line method
  3.    both (A) and (B)
  4.    none of the above
 Discuss Question
Answer: Option C. -> both (A) and (B)
Question 80. In Hopknison demand rate or two parttariff the demand rate or fixed charges are
  1.    dependent upon the energy consumed
  2.    dependent upon the maximum demand of the consumer
  3.    both (A) and (B)
  4.    neither (A) nor (B)
 Discuss Question
Answer: Option B. -> dependent upon the maximum demand of the consumer

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