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Energy and Power

Energy and Power
A 75 load uses 2 W of power. The output voltage of the power supply is approximately

1.2 V
12 V
6 V
120 V

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Energy and Power
A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

4.28%
42.85%
8.57%
85.7%

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Energy and Power
If it takes 400 ms to use 12,000 J of energy, the power is

30 W
300 kW
3 W
30 kW

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Energy and Power
How many watt-hours represent 65 W used for 18 h?

1,170 Wh
11,700 Wh
117,000 Wh
11.7 Wh

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Energy and Power
How much continuous current can be drawn from a 60 Ah battery for 14 h?

428 A
4.28 A
4.2 A
42.8 A

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Energy and Power
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

open
overheated
shorted
reversed

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MORE MCQ ON Energy and Power

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