Economics of Power Generation Questions and Answers - Set 03 - ObjectiveBooks

Economics of Power Generation Questions and Answers - Set 03

Practice Test: Question Set - 03

1. In an interconnected system, the diversity factor of the whole system
    (A) Remains unchanged
    (B) Decreases
    (C) Increases
    (D) None of the above

2. For a diesel generating station the useful life is expected to be around
    (A) 15 to 20 years
    (B) 20 to 50 years
    (C) 50 to 75 years
    (D) 75 to 100 years

3. An over excited synchronous motor on no-load is known as
    (A) Synchronous condenser
    (B) Generator
    (C) Induction motor
    (D) Alternator

4. Which of the following devices may be used to provide protection against lightening over voltages?
    (A) Horn gaps
    (B) Rod gaps
    (C) Surge absorbers
    (D) All of the above

5. Annual depreciation cost is calculated by
    (A) Sinking fund method
    (B) Straight line method
    (C) Both (A) and (B)
    (D) None of the above

6. Diversity factor has direct effect on the
    (A) Fixed cost of unit generated
    (B) Running cost of unit generated
    (C) Both (A) and (B)
    (D) Neither (A) nor (B)

7. Maximum demand on a power plant is
    (A) The greatest of all "short time interval averaged" demand during a period
    (B) Instantaneous maximum value of kVA supplied during a period
    (C) Either (A) or (B)
    (D) None of the above

8. Which of the following should be used for extinguishing electrical fires?
    (A) Water
    (B) Carbon tetrachloride fire extinguisher
    (C) Foam type fire extinguisher
    (D) CO2 fire extinguisher

9. For which of the following power plants highly skilled engineers are required for running the plants?
    (A) Nuclear power plants
    (B) Gas turbine power plants
    (C) Solar power plants
    (D) Hydroelectric power plants

10. For a consumer the most economical power factor is generally
    (A) 0.5 lagging
    (B) 0.5 leading
    (C) 0.95 lagging
    (D) 0.95 leading

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