The voltage from the source is stepped up by the first ideal transformer and then stepped down by the second ideal transformer before the load is delivered. The impedance at the middle is Zm=40+j30 ohms and sees some voltage source at its left side and some impedance on the right side. The load is known to consume 1.2kW and 300Vars as shown in the first figure. Use the current accross the impedance at the middle as the reference phasor where Im=4∠0° A. If there were no transformers used, i.e. Vs is directly connected to Zm and ZL, what will be the real power and reactive power drawn from the source respectively?
The voltage from the source is stepped up by the first ideal transformer and then stepped down by the second ideal transformer before the load is delivered. The impedance at the middle is Zm=40+j30 ohms and sees some voltage source at its left side and some impedance on the right side. The load is known to consume 1.2kW and 300Vars as shown in the first figure. Use the current accross the impedance at the middle as the reference phasor where Im=4∠0° A. If there were no transformers used, i.e. Vs is directly connected to Zm and ZL, what will be the real power and reactive power drawn from the source respectively?
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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The voltage from the source is stepped up by the first ideal transformer and then stepped down by the second ideal transformer before the load is delivered. The impedance at the middle is Zm=40+j30 ohms and sees some voltage source at its left side and some impedance on the right side. The load is known to consume 1.2kW and 300Vars as shown in the first figure.
Use the current accross the impedance at the middle as the reference phasor where Im=4∠0° A.
If there were no transformers used, i.e. Vs is directly connected to Zm and ZL, what will be the real power and reactive power drawn from the source respectively?
![ZM
P = 1.2kW
ZL
QL = 300Vars
ZM
ÎM
ZLea
Vs.ea](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd5dbdd3c-c050-4442-95bd-4cec770ad302%2F9a1b24b9-2252-4ec1-98b9-f8868a061778%2Ftqko5qp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:ZM
P = 1.2kW
ZL
QL = 300Vars
ZM
ÎM
ZLea
Vs.ea
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