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4) A three-phase air-conditioning unit which has 4 kW working power and PF of 0.85 draws 13.06 A. What is the apparent power? Apparent power =

4) A three-phase air-conditioning unit which has 4 kW working power and PF of 0.85 draws 13.06 A. What is the apparent power? Apparent power =

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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4) A three-phase air-conditioning unit which has 4 kW working power and PF of 0.85 draws 13.06 A. What is the apparent power? Apparent power = 5) A three-phase air-conditioning unit which has 4 kW working power and PF of 0.85 draws 13.06 A. What is the peak current? I Peak current = 6). A #1/0 THW copper conductor is protected by a circuit breaker rated at 480 V, with a K-factor of 1.3 and clearing time of 2 cycles. What is the symmetrical short-circuit current? Current = 7) An AC circuit has resistance of 9 02, inductive reactance of 5 02, and capacitive reactance of 2 Q. What is the impedance? Impedance =
Transcribed Image Text:4) A three-phase air-conditioning unit which has 4 kW working power and PF of 0.85 draws 13.06 A. What is the apparent power? Apparent power = 5) A three-phase air-conditioning unit which has 4 kW working power and PF of 0.85 draws 13.06 A. What is the peak current? I Peak current = 6). A #1/0 THW copper conductor is protected by a circuit breaker rated at 480 V, with a K-factor of 1.3 and clearing time of 2 cycles. What is the symmetrical short-circuit current? Current = 7) An AC circuit has resistance of 9 02, inductive reactance of 5 02, and capacitive reactance of 2 Q. What is the impedance? Impedance =
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Given:

Ans.(4)

Power, P=4 kW

Power factor, cosϕ=0.85

 

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