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5) A 230 V,1200rpm,15 A sperately excited has an armature registance of 1.2Ω. Motor is operated under diynamic breaking
Posted: Thu Jul 14, 2022 2:37 pm
by answerhappygod
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5) A 230 V,1200rpm,15 A sperately excited has an armature registance of 1.2Ω. Motor is operated under diynamic breaking with chopper Breaking registance =20Ω. (a) Calculate the duty ratio of the ohopper for motor speed of 1000rpm and breaking torgue equal to 1.5 times rated motor forque. (b) What will be the motor speed for duty ratio of 0.5 and motor torque equal to it's rated forque?