Electrical_Power_Drivers-_ET3026WB-Chapt14_example_questions

Whatis theapproximatevalueoftherotori2rlosses a38kw

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Unformatted text preview: ) 111%. c) 90%. d) 122%. 14.14 (1) A 300hp, 2300V, 3‐phase, 60Hz squirrel‐cage induction motor turns at a full‐load speed of 590r/min. What is the approximate value of the rotor I2R losses? a) 3.8kW. b) 223kW. c) 227kW. d) 300kW. 14.14 (2) A 300hp, 2300V, 3‐phase, 60Hz squirrel‐cage induction motor turns at a full‐load speed of 590r/min. The line voltage drops to 1944V. What is the new speed, knowing that the load torque remains the same? a) 589r/min. b) 593r/min. c) 586r/min. d) 591r/min. 14.14 (3) A 300hp, 2300V, 3‐phase, 60Hz squirrel‐cage induction motor turns at a f...
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