The secondary winding of a transformer has a terminal voltage of vsec (t) = 234 sin (377t) V. The turns ratio of the transformer (N1/N2) is 72:201. If the secondary current of the transformer isec (t) = 12 sin(377t + [25°]), (a) What is the RMS value of the primary current of this transformer? (b) What are its voltage reg- ulation and (c) efficiency? The impedances of this transformer referred to the primary side are Rsc = 0.292, Xsc = 0.759 and Rc = 30022, Xm = 7022. N.B. To compute the regulation, neglect the excitation current of the transformer, io = ic+im. Single phase transformer with a load. Re jX, www ~v, (t) R www jX m. N₁ N₂

The secondary winding of a transformer has a terminal voltage of vsec (t) = 234 sin (377t) V. The turns ratio of the transformer (N1/N2) is 72:201. If the secondary current of the transformer isec (t) = 12 sin(377t + [25°]), (a) What is the RMS value of the primary current of this transformer? (b) What are its voltage reg- ulation and (c) efficiency? The impedances of this transformer referred to the primary side are Rsc = 0.292, Xsc = 0.759 and Rc = 30022, Xm = 7022. N.B. To compute the regulation, neglect the excitation current of the transformer, io = ic+im. Single phase transformer with a load. Re jX, www ~v, (t) R www jX m. N₁ N₂

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 3.9P

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

the answer for voltage regulation is all i need. the correct answers for a and c are 23.524 , 91.2254. The previous voltage regulation your expert provided was wrong. try again and please kindly give me a correct answer

The secondary winding of a transformer has a terminal voltage
of vsec (t) = 234 sin (377t) V. The turns ratio of the transformer
(N1/N2) is 72:201. If the secondary current of the transformer
isec (t) = 12 sin(377t + [25°]), (a) What is the RMS value of the
primary current of this transformer? (b) What are its voltage reg-
ulation and (c) efficiency? The impedances of this transformer
referred to the primary side are Rsc = 0.222, Xsc = 0.759 and
Rc = 30022, Xm = 7022.
N.B. To compute the regulation, neglect the excitation current of
the transformer, io = ic+im.
Single phase transformer with a load.
Rsc jX,
(~) v₂ (1)
-R₂
www
jX
m.
N₁:N₂
(a) RMS of primary current: A
(b) Voltage regulation: %
(c) Efficiency: %
—

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