Find the turns ratio of three single-phase transformers connected to form a three-phase system with characteristics given below: Primary side connection: Delta Primary side line voltage: 139kV Secondary side connection: Star Secondary side line voltage: 6kV Answer: Question 19 A three-phase induction machine running at rated load has the following characteristics: Supply Voltage: {V}V Supply frequency: 50HZ Number of poles: 4 Rotor speed: 1421 rpm Calculate the slip speed of the induction motor in rpm.

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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Find the turns ratio of three single-phase transformers connected to form a three-phase
system with characteristics given below:
Primary side connection: Delta
Primary side line voltage: 139kV
Secondary side connection: Star
Secondary side line voltage: 6kV
Answer:
Question 19
A three-phase induction machine running at rated load has the following characteristics:
Supply Voltage: {V}V
Supply frequency: 50HZ
Number of poles: 4
Rotor speed: 1421 rpm
Calculate the slip speed of the induction motor in rpm.
Answer:
Orpm
Transcribed Image Text:Find the turns ratio of three single-phase transformers connected to form a three-phase system with characteristics given below: Primary side connection: Delta Primary side line voltage: 139kV Secondary side connection: Star Secondary side line voltage: 6kV Answer: Question 19 A three-phase induction machine running at rated load has the following characteristics: Supply Voltage: {V}V Supply frequency: 50HZ Number of poles: 4 Rotor speed: 1421 rpm Calculate the slip speed of the induction motor in rpm. Answer: Orpm
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