Three non-reactive loads are connected in delta across a three-phase, three-wire 400 V supply in the following way: ⚫10 kW between the red and yellow lines; • 6 kW between the yellow and blue lines; and • 4 kW between the blue and red lines. Two wattmeters are available to measure the total power drawn by the three-phase load. If the current coil of one of the wattmeter (W₁) is connected in the red line, and its voltage coil connected across the red and yellow lines, calculate: i. The power measured by wattmeter, W₁. ii. The power that would be measured by the other wattmeter (W2) if it was correctly connected. iii. The overall power factor of the three-phase load.
Three non-reactive loads are connected in delta across a three-phase, three-wire 400 V supply in the following way: ⚫10 kW between the red and yellow lines; • 6 kW between the yellow and blue lines; and • 4 kW between the blue and red lines. Two wattmeters are available to measure the total power drawn by the three-phase load. If the current coil of one of the wattmeter (W₁) is connected in the red line, and its voltage coil connected across the red and yellow lines, calculate: i. The power measured by wattmeter, W₁. ii. The power that would be measured by the other wattmeter (W2) if it was correctly connected. iii. The overall power factor of the three-phase load.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Question
![Three non-reactive loads are connected in delta across a three-phase, three-wire 400
V supply in the following way:
⚫10 kW between the red and yellow lines;
• 6 kW between the yellow and blue lines; and
• 4 kW between the blue and red lines.
Two wattmeters are available to measure the total power drawn by the three-phase
load. If the current coil of one of the wattmeter (W₁) is connected in the red line,
and its voltage coil connected across the red and yellow lines, calculate:
i. The power measured by wattmeter, W₁.
ii.
The power that would be measured by the other wattmeter (W2) if it was
correctly connected.
iii. The overall power factor of the three-phase load.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff7b5173b-e09c-4918-b4ac-3c3306b0be95%2Fef03a2c6-34d9-43cd-9e2f-5b0058628314%2Fusor28s_processed.png&w=3840&q=75)
Transcribed Image Text:Three non-reactive loads are connected in delta across a three-phase, three-wire 400
V supply in the following way:
⚫10 kW between the red and yellow lines;
• 6 kW between the yellow and blue lines; and
• 4 kW between the blue and red lines.
Two wattmeters are available to measure the total power drawn by the three-phase
load. If the current coil of one of the wattmeter (W₁) is connected in the red line,
and its voltage coil connected across the red and yellow lines, calculate:
i. The power measured by wattmeter, W₁.
ii.
The power that would be measured by the other wattmeter (W2) if it was
correctly connected.
iii. The overall power factor of the three-phase load.
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