BEE 223 Measurement of 3 phase power

Lectures on Basic Electrical Engineering By Dr. Tirupathiraju Kanumuri, Assistant Professor, NIT Delhi
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[@surendrakverma555]

Very good. Thanks 🙏🙏🙏🙏🙏

[@robinshen7576]

Dear teacher, why the three watt method for star load (5:35) can not be used for the delta load connection? why the watt meter must be inserted into each phase for a delta load connection? thanks very much

[@channel12381]

Because in Delta line current and phase current are different

[@aravindr3907]

Angle is -79.8...then how its pf becomes lag?

[@vinay5470]

My dear are you neglected the PF

[@vivekanandadhar7056]

With the help of pressure coil we measure voltage,with the help of current coil we measure current,but during measurement of power we require one additional factor i.e power factor,how p.f measurement is possible with the help of wattmeter?