Energy And Power MCQ Questions & Answers | Electrical Engineering Page-3 section-1

21.
In 0.025 W, there are

A. 25 kW

B. 0.00025 mW

C. 2,500 µW

D. 25 mW

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22.
Three hundred joules of energy are consumed in 15 s. The power is

A. 2,000 W

B. 2 W

C. 20 W

D. 200 W

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23.
A 68 Ω resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is

A. 132 mW

B. 13.2 mW

C. 22.6 mW

D. 226 mW

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24.
A 33 Ω half-watt resistor and a 330 Ω half-watt resistor are connected across a 12 V source. Which one(s) will overheat?

A. 33 Ω

B. 330 Ω

C. Both resistors

D. Neither resistor

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25.
A battery is one type of power supply that converts chemical energy into electrical energy.

A. True

B. False

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26.
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

A. Overheated

B. Shorted

C. Open

D. Reversed

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27.
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be

A. 2 W

B. 1 W

C. 5 W

D. 0.5 W

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28.
A 75 Ω load uses 2 W of power. The output voltage of the power supply is approximately

A. 120 V

B. 1.2 V

C. 12 V

D. 6 V

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29.
A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

A. 20.16 kWh

B. 201.6 kWh

C. 2.01 kWh

D. 8.4 kWh

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30.
When the current through a 12 kΩ resistor is 8 mA, the power is

A. 7.68 mW

B. 768 mW

C. 7.68 W

D. 76.8 W

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Energy And Power MCQ Questions & Answers | Electrical Engineering

21. In 0.025 W, there are

Answer & Solution

22. Three hundred joules of energy are consumed in 15 s. The power is

Answer & Solution

23. A 68 Ω resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is

Answer & Solution

24. A 33 Ω half-watt resistor and a 330 Ω half-watt resistor are connected across a 12 V source. Which one(s) will overheat?

Answer & Solution

25. A battery is one type of power supply that converts chemical energy into electrical energy.

Answer & Solution

26. When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

Answer & Solution

27. The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be

Answer & Solution

28. A 75 Ω load uses 2 W of power. The output voltage of the power supply is approximately

Answer & Solution

29. A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

Answer & Solution

30. When the current through a 12 kΩ resistor is 8 mA, the power is

Answer & Solution

21.
In 0.025 W, there are

22.
Three hundred joules of energy are consumed in 15 s. The power is

23.
A 68 Ω resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is

24.
A 33 Ω half-watt resistor and a 330 Ω half-watt resistor are connected across a 12 V source. Which one(s) will overheat?

25.
A battery is one type of power supply that converts chemical energy into electrical energy.

26.
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

27.
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be

28.
A 75 Ω load uses 2 W of power. The output voltage of the power supply is approximately

29.
A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

30.
When the current through a 12 kΩ resistor is 8 mA, the power is