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A 3-phase induction motor having a nominal rating of 100hp ( 75KW), and a synchronous speed of 1800 r/min is connected to 600V source. The two-wattmeter method shows a total power consumption of 70kW, and ammeter indicated line current of 78A. Precise measurement give rotor speed of 1763 r/min. if iron losses are 2kW and windage and friction losses is 1.2KW. ( resistance between two stator terminal is 0.342) A) Power supplied to the rotor B)Rotor I2R losses. C) Mechanical power supplied to the load.

A 3-phase induction motor having a nominal rating of 100hp ( 75KW), and a synchronous speed of 1800 r/min is connected to 600V source. The two-wattmeter method shows a total power consumption of 70kW, and ammeter indicated line current of 78A. Precise measurement give rotor speed of 1763 r/min. if iron losses are 2kW and windage and friction losses is 1.2KW. ( resistance between two stator terminal is 0.342) A) Power supplied to the rotor B)Rotor I2R losses. C) Mechanical power supplied to the load.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A 3-phase induction motor having a nominal rating of 100hp ( 75KW), and a synchronous speed of 1800 r/min is connected to 600V source. The two-wattmeter method shows a total power consumption of 70kW, and ammeter indicated line current of 78A. Precise measurement give rotor speed of 1763 r/min. if iron losses are 2kW and windage and friction losses is 1.2KW. ( resistance between two stator terminal is 0.342) A) Power supplied to the rotor B)Rotor I2R losses. C) Mechanical power supplied to the load. D) efficiency E) Torque developed at 1763 r/min
Transcribed Image Text:A 3-phase induction motor having a nominal rating of 100hp ( 75KW), and a synchronous speed of 1800 r/min is connected to 600V source. The two-wattmeter method shows a total power consumption of 70kW, and ammeter indicated line current of 78A. Precise measurement give rotor speed of 1763 r/min. if iron losses are 2kW and windage and friction losses is 1.2KW. ( resistance between two stator terminal is 0.342) A) Power supplied to the rotor B)Rotor I2R losses. C) Mechanical power supplied to the load. D) efficiency E) Torque developed at 1763 r/min
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