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Question #1117
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A 440/110 V single phase transformer supplies a load of 5 kW at 0.8 power factor load. What will be its primary current?
A) 45.45 A
B) 56.82 A
C) 14.2 A
D) 11.36 A
Posted: 08 Oct 2015 00:31 UTC  Post #1
maritimesailor
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Member
Total Posts: 4
I believe this answer is 11.36A
Posted: 29 Apr 2019 13:50 UTC  Post #2
Stan
Engine
Registered
Total Posts: 4
P=I*U*load factor

Correct answer is 14.2A
Posted: 29 Jan 2021 15:05 UTC  Post #3
scrubbyj427
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Total Posts: 7
can someone show the math to this?
Posted: 30 Jan 2021 02:47 UTC  Post #4
dracopolis
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Total Posts: 5
P = 5000 W (5kW), V = 440 V, Load Factor = 0.8, P = I*V*Load Factor

5000 = I*440*0.8
I = 5000/(440*0.8) = 14.2 A
Posted: 10 Feb 2021 18:46 UTC  Post #5
scrubbyj427
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Total Posts: 7
Thank you DRACOPOLIS
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