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CBSE Class 12-science Answered

A motor drill draws 3.5 A current at the power line voltage 120 V(RMS). What is the motor's power if the current lags the voltage by 20 degrees?

Asked by arjunsah797 | 29 Mar, 2022, 07:25: AM
Expert Answer
AC Power = Voltage × Current × cosΦ
 
where cosΦ is power factor and Φ is the phase angle between voltage and current
 
AC power = 120 × 3.5 × cos20 = 395 W
Answered by Thiyagarajan K | 29 Mar, 2022, 12:16: PM
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