With the aid of graph, briefly explain the relationship between efficiency and output power of a transformer.

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Q2 (a)
With the aid of graph, briefly explain the relationship between efficiency and output
power of a transformer.
(b) A 15-kVA 8000/230-V distribution transformer has an impedance referred to the primary
of 80 + j300 Q. The components of the excitation branch referred to the primary side are
Rc = 350 k2 and XM = 70 k2 .
(a)
If the primary voltage is 7967 V and the load impedance is ZL = 3.2 + jl.5 N,
(i) Examine the referred secondary current of the transformer.
(ii) Calculate the actual secondary voltage of the transformer.
(ii) Determine the voltage regulation (VR).
Transcribed Image Text:Q2 (a) With the aid of graph, briefly explain the relationship between efficiency and output power of a transformer. (b) A 15-kVA 8000/230-V distribution transformer has an impedance referred to the primary of 80 + j300 Q. The components of the excitation branch referred to the primary side are Rc = 350 k2 and XM = 70 k2 . (a) If the primary voltage is 7967 V and the load impedance is ZL = 3.2 + jl.5 N, (i) Examine the referred secondary current of the transformer. (ii) Calculate the actual secondary voltage of the transformer. (ii) Determine the voltage regulation (VR).
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