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Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase transformer in order to find its efficiency. The observations during these tests are: O.C. test; Voltage across primary winding = 6360 V; Primary current =1 A, and Power input 32 kW. S.C. test; Voltage across primary = 180 V; Current in secondary winding 175 A, and Power %3D %3D input 2 kW. Calculate the efficieney of the transformer. when supplying full-load at p.f. of 0.8 lagging.

Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase transformer in order to find its efficiency. The observations during these tests are: O.C. test; Voltage across primary winding = 6360 V; Primary current =1 A, and Power input 32 kW. S.C. test; Voltage across primary = 180 V; Current in secondary winding 175 A, and Power %3D %3D input 2 kW. Calculate the efficieney of the transformer. when supplying full-load at p.f. of 0.8 lagging.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Q2:- Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase transformer in order to find its efficiency. The observations during these tests are: O.C. test; Voltage across primary winding 6360 V; Primary current= 1 A, and Power input =2 kW. S.C. test; Voltage across primary 180 V; Current in secondary winding 175 A, and Power %3D input 2 kW. Calculate the efficieney of the transformer. when supplying full-load at p.f. of 0.8 lagging.
Transcribed Image Text:Q2:- Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase transformer in order to find its efficiency. The observations during these tests are: O.C. test; Voltage across primary winding 6360 V; Primary current= 1 A, and Power input =2 kW. S.C. test; Voltage across primary 180 V; Current in secondary winding 175 A, and Power %3D input 2 kW. Calculate the efficieney of the transformer. when supplying full-load at p.f. of 0.8 lagging.
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