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A 0.5 Hp 2-pole single-phase motor is operated in 240 v 50 Hz network. The motor operates with 3.4% slip at full load. In the locked rotor test, the following measurements were taken from the main winding and auxiliary windings. Auxiliary Winding Main Winding Applied Voltage E=24V E=24V current Is=5 A la=2A active power Ps=75W Pa=30W a- Calculate the rotor speed (nr) b- Calculate the phase difference between the main winding and the auxiliary winding. c- Calculate the power it will draw from the mains if the rotor is locked at 240 Volt mains voltage.

A 0.5 Hp 2-pole single-phase motor is operated in 240 v 50 Hz network. The motor operates with 3.4% slip at full load. In the locked rotor test, the following measurements were taken from the main winding and auxiliary windings. Auxiliary Winding Main Winding Applied Voltage E=24V E=24V current Is=5 A la=2A active power Ps=75W Pa=30W a- Calculate the rotor speed (nr) b- Calculate the phase difference between the main winding and the auxiliary winding. c- Calculate the power it will draw from the mains if the rotor is locked at 240 Volt mains voltage.

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 0.5 Hp 2-pole single-phase motor is operated in 240 v 50 Hz network. The motor operates with 3.4% slip at full load. In the locked rotor test, the following measurements were taken from the main winding and auxiliary windings. Auxiliary Winding Main Winding Applied Voltage E=24V E=24V current Is=5 A la=2A active power Ps=75W Pa=30W a- Calculate the rotor speed (nr) b- Calculate the phase difference between the main winding and the auxiliary winding. c- Calculate the power it will draw from the mains if the rotor is locked at 240 Volt mains voltage.
Transcribed Image Text:A 0.5 Hp 2-pole single-phase motor is operated in 240 v 50 Hz network. The motor operates with 3.4% slip at full load. In the locked rotor test, the following measurements were taken from the main winding and auxiliary windings. Auxiliary Winding Main Winding Applied Voltage E=24V E=24V current Is=5 A la=2A active power Ps=75W Pa=30W a- Calculate the rotor speed (nr) b- Calculate the phase difference between the main winding and the auxiliary winding. c- Calculate the power it will draw from the mains if the rotor is locked at 240 Volt mains voltage.
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