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Tough Power Electronics Question(Help Final Year Students)

01friel · 2005-05-06 20:51:09

A 1 hp, 250 RPM dc motor has rated torque at 40Nm. The motor constants are armature resistance = 5 ohms, Km = 7.5V-s/r. Motor operates at 40% of rated torque in a single phase half wave phase controlled converter, firing angle is 90 degrees and extinction angle is 210.the rms value of the line voltage is 240V. Find the…

06-05-2005 08:51PM

#1

01friel

Closed Accounts Posts: 13 ✭

Join Date: February 2005

Posts: 10

A 1 hp, 250 RPM dc motor has rated torque at 40Nm. The motor constants are armature resistance = 5 ohms, Km = 7.5V-s/r. Motor operates at 40% of rated torque in a single phase half wave phase controlled converter, firing angle is 90 degrees and extinction angle is 210.the rms value of the line voltage is 240V. Find the average speed of the motor.

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