Electrical MCQ

Ohm’s law is valid for:

• AC only

• DC only

• Both AC and DC

• Neither Ac nor DC

Unit of electrical power is:

• Volt

• Watt

• Ohm

• Ampere

1 HP (Horsepower) = ?

• 746 W

• 1000 W

• 748 W

• 748 W

4. The resistance of a wire is directly proportional to:

• Length

• Cross-sectional area

• Temperature

• All of the above

Which instrument is used to measure current?

• Voltmeter

• Ammeter

• Watt mater

• Ohm metter

Power factor of a pure resistor is:

• 0

• 1

• 0.5

• -1

In a DC circuit, the frequency is:

• 50 Hz

• 0 Hz

• 15 HZ

• Infinity

Which of the following is not a type of power in AC circuit?

• Apparent power

• True power

• Reactive power

• Linear power

A capacitor blocks

• DC only

• Ac only

• Both AC and DC

• None

In an RLC circuit, resonance occurs when:

• XL = XC

• R = 0

• XL > XC

• XC > XL