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Energy and Power

Energy and Power
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be

5 W
2 W
1 W
0.5 W

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

overheated
shorted
open
reversed

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Energy and Power
A 6 V battery is connected to a 300 load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?

200 h
10 h
2,000 h
1 h

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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

42.85%
8.57%
4.28%
85.7%

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Energy and Power
In 0.025 W, there are

0.00025 mW
25 mW
25 kW
2,500 µW

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

3 W
30 kW
300 kW
30 W

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MORE MCQ ON Energy and Power

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