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.

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.

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 3.33MCQ: The direct electrical connection of the windings allows transient over voltages to pass through the...

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