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 jXsc www (~) v₂ (1) -R₂ ww jX m. N₁ N₂ (a) RMS of primary current: A (b) Voltage regulation: % (c) Efficiency: % —
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 jXsc www (~) v₂ (1) -R₂ ww jX m. N₁ N₂ (a) RMS of primary current: A (b) Voltage regulation: % (c) Efficiency: % —
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
Related questions
Question
need correct answers for part 2 and 3 . the correct current is 23.524 for part a .
![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: %
—](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8e9ca648-396a-488a-88dd-91544590f068%2Fd1871d91-b272-4774-b653-df1746d5196a%2Fz8okheq_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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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