Electrical Apparatus and Deviceschoose the correct answer and show solution A 300 kVA transformer has 95% efficiency at full-load 0.8 pf lagging and 96%efficiency at half-load, unity pf. The iron loss Pi and copper loss Pc in kW, underfull load operation are *Pc = 6.59, Pi = 9.21O Pc = 4.12, Pi = 8.51Pc = 8.51, Pi = 4.12Pc = 12.72, Pi = 3.07The full-load copper loss and iron loss of a transformer are 6,400 W and 5,000 Wrespectively. The copper loss and iron loss at half load will be, respectively *O 3,200 W and 2,500 W1,600 W and 1,250 W1,600 W and 5,000 W3,200 W and 5,000 W

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Electrical Engineering

Electrical Apparatus and Devices choose the correct answer and show solution

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.5MCQ: For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is...

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Question

Electrical Apparatus and Devices

choose the correct answer and show solution

A 300 kVA transformer has 95% efficiency at full-load 0.8 pf lagging and 96%
efficiency at half-load, unity pf. The iron loss Pi and copper loss Pc in kW, under
full load operation are *
Pc = 6.59, Pi = 9.21
O Pc = 4.12, Pi = 8.51
Pc = 8.51, Pi = 4.12
Pc = 12.72, Pi = 3.07
The full-load copper loss and iron loss of a transformer are 6,400 W and 5,000 W
respectively. The copper loss and iron loss at half load will be, respectively *
O 3,200 W and 2,500 W
1,600 W and 1,250 W
1,600 W and 5,000 W
3,200 W and 5,000 W

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