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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