Draw the circle diagram for a 5.6 kW, 400-V, 3-0, 4-pole. 50-Hz. slip-ring induction motor from the following data: No-load readings: 400 V. 6 A, cos 0 = 0.087: Short-circuit test: 100 V, 12 A, 720 W. The ratio of primary to secondary turns= 2.62, stator resistance per phase is 0.67 and of the rotor is 0.185 22. Calculate (ii) full-load slip (i) full-load current (iii) full-load power factor maximum torque full-load torque (v) maximum power.

Draw the circle diagram for a 5.6 kW, 400-V, 3-0, 4-pole. 50-Hz. slip-ring induction motor from the following data: No-load readings: 400 V. 6 A, cos 0 = 0.087: Short-circuit test: 100 V, 12 A, 720 W. The ratio of primary to secondary turns= 2.62, stator resistance per phase is 0.67 and of the rotor is 0.185 22. Calculate (ii) full-load slip (i) full-load current (iii) full-load power factor maximum torque full-load torque (v) maximum power.

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

Draw the circle diagram for a 5.6 kW, 400-V, 3-0, 4-pole, 50-Hz. slip-ring
induction motor from the following data:
No-load readings: 400 V, 6 A. cos
= 0.087: Short-circuit test: 100 V, 12 A, 720 W
The ratio of primary to secondary turns = 2.62, stator resistance per phase is 0.67 and of the
rotor is 0.185 2. Calculate
(ii) full-load slip
(i) full-load current
(iii) full-load power factor
(iv) maximum torque
full-load torque
(v) maximum power.

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