1) The efficiency of variable speed drives generally
a. Decreases with speed
b. Increases with speed
c. Remains constant with change in speed
d. None of these
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Answer
Explanation
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ANSWER: Decreases with speed
Explanation:
No explanation is available for this question!
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2) The basic function of electronic ballast is
a. To ignite the lamp
b. To stabilize the gas discharge
c. To supply the power to the lamp
d. Only a and c
e. All of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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3) The rotational speed of an AC induction motor depends on the
a. Number of poles in stator
b. Frequency of the applied AC power
c. Both a and b
d. None of these
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Answer
Explanation
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ANSWER: Both a and b
Explanation:
No explanation is available for this question!
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4) A conventional incandescent lamp has a luminous efficiency of
a. 10 lumens / watt
b. 12 lumens / watt
c. 14 lumens / watt
d. 14.6 lumens / watt
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Answer
Explanation
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ANSWER: 12 lumens / watt
Explanation:
No explanation is available for this question!
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5) In valley filling, the incremental costs during peak hours are
a. Less than the average costs of electricity
b. More than the average costs of electricity
c. Equal to the average cost of electricity
d. None of these
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Answer
Explanation
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ANSWER: Less than the average costs of electricity
Explanation:
No explanation is available for this question!
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6) The reduction of utility load primarily during peak demand is known as
a. Peak clipping
b. Load shifting
c. Valley filling
d. MTP analysis
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Answer
Explanation
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ANSWER: Peak clipping
Explanation:
No explanation is available for this question!
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7) The demand side management can be achieved by the technique of
a. Time of day pricing and metering
b. Multi - utility power exchange model
c. Load management
d. All of these
e. None of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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8) EPRI stands for
a. European power research institute
b. Electrical power Russian institute
c. Electrical power research institute
d. Electrical power research industries
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Answer
Explanation
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ANSWER: Electrical power research institute
Explanation:
No explanation is available for this question!
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9) The term Demand Side Management was coined during
a. 1936 energy crisis
b. 1972 energy crisis
c. 1973 energy crisis
d. 1986 energy crisis
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Answer
Explanation
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ANSWER: 1973 energy crisis
Explanation:
No explanation is available for this question!
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