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MHT CET 2025 (26 Apr, Shift 2) · Power, Power Factor & Wattless Current

Power, Power Factor & Wattless Current question from MHT CET 2025 (26 Apr, Shift 2)

Q20MHT CET 2025 · 26 APR · SHIFT 2Easy

Power, Power Factor & Wattless Current

In an a.c. circuit containing $L, C, R$ in series the ratio of true power to apparent power is ( $Z =$ impedance of the circuit and R is the resistance)

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Answer: (d)

True power/apparent power $= \frac{V_{rms}I_{rms}\cos\phi}{V_{rms}I_{rms}} = \cos\phi$ .
For series LCR, $\cos\phi = \frac{R}{Z}$ .
So the answer is (d) $\frac{R}{Z}$ .

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