Question:
The instrument used to measure power factor directly is
The instrument used to measure power factor directly is
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Power factor meter directly measures \(\cos\phi\), where \(\phi\) is the phase angle between voltage and current.
Updated On: May 27, 2026
- Wattmeter
- Ammeter
- Voltmeter
- Power factor meter
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The Correct Option is D
Solution and Explanation
Concept:
Power factor is the cosine of the phase angle between voltage and current.
Step 1: Ammeter measures current.
Step 2: Voltmeter measures voltage.
Step 3: Wattmeter measures power.
Step 4: Power factor meter directly measures power factor of an AC circuit. Therefore: \[ \boxed{\text{Power factor meter}} \]
Step 1: Ammeter measures current.
Step 2: Voltmeter measures voltage.
Step 3: Wattmeter measures power.
Step 4: Power factor meter directly measures power factor of an AC circuit. Therefore: \[ \boxed{\text{Power factor meter}} \]
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