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Saturday, February 16, 2019

Power Generator / Sources: Principles and Applications (Objective Questions with Answers)




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1. A ______ is a Group of cells that generates Electric energy from their internal chemical reaction
A. Battery
B. regulator
C. power supply
D. solar energy

2. Which of the following is the main function of a battery?
A. To provide a source of steady DC voltage to fixed polarity
B. To provide a source of steady dc voltage of variable polarity
C. To Provide a source of Variable dc Voltage of fixed polarity
D. To Provide a source of variable dc voltage of variable polarity

3. Volt is a unit of _________
A. Electromotive force
B. energy
C. Force
D. Magneto motive force

4. A transformer will work on
A. ac only
B. ac as well as dc
C. dc only
D. Pulsating dc

5. In a chemical cell current is the movement of
A. Positive and negative ions
B. Positive charges
C. positive ions only
D. Negative ions only

6. What is the nominal output of an automotive battery having six lead acid cells in series?
A. 12V
B. 24V
C. 6V
D. 3V

7. The speed of a dc motor is
A. directly proportional to flux per pole
B. inversely proportional to flux per pole
C. inversely proportional to applied voltage
D. inversely proportional to armature current

8 low speed alternators are driven by
A. hydraulic turbines
B. steam turbines
C. steam engines
D. diesel engines

9. High speed alternators are driven by
A. diesel engine
B. steam turbines
C. hydraulic turbines
D. diesel engine

10. The common 9v flat battery for transistor radio has _______ cells  Connected ins series
A. 12
B. 3
C. 6
D. 9 
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