Engineering & Technology
Electrical Engineering
The following data were obtained on a 50 kVA 2400/120 V transformer : Open circuit test, instruments on low voltage side : Waltmeter reading = 396...
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The following data were obtained on a 50 kVA 2400/120 V transformer :

Open circuit test, instruments on low voltage side :

Waltmeter reading = 396 Watts

Ammeter reading = 9.65 amperes

Voltmeter reading = 120 Volts

Short circuit test, instruments on high voltage side :

Waltmeter reading = 810 Watts

Ammeter reading = 20.8 amperes

Voltmeter reading = 92 Volts

Find the efficiency when rated kVA is delivered to a load having a power

factor of 0.8 lagging.The following data were obtained on a 50 kVA 2400/120 V transformer :

Open circuit test, instruments on low voltage side :

Waltmeter reading = 396 Watts

Ammeter reading = 9.65 amperes

Voltmeter reading = 120 Volts

Short circuit test, instruments on high voltage side :

Waltmeter reading = 810 Watts

Ammeter reading = 20.8 amperes

Voltmeter reading = 92 Volts

Find the efficiency when rated kVA is delivered to a load having a power

factor of 0.8 lagging.

Engineering & Technology Electrical Engineering
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