1. At standstill, the equivalent impedance of inner and outer cages of a double-cage rotor are (0.01 + 0-5) and (0-05 +j 0-1) 2 respectively. Calculate the ratio of torques produced by the two cages (i) at starting (ii) when running with a slip of 5 %. [(i) T/T₁=100 (i) T/T,=1/1-44] Jevill 501
1. At standstill, the equivalent impedance of inner and outer cages of a double-cage rotor are (0.01 + 0-5) and (0-05 +j 0-1) 2 respectively. Calculate the ratio of torques produced by the two cages (i) at starting (ii) when running with a slip of 5 %. [(i) T/T₁=100 (i) T/T,=1/1-44] Jevill 501
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
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Transcribed Image Text:1. At standstill, the equivalent impedance of inner and outer cages of a double-cage rotor are (0.01 +
0-5) and (0-05+j 0·1) 2 respectively. Calculate the ratio of torques produced by the two cages (i) at
starting (ii) when running with a slip of 5 %.
[() T/T₁=100 (i) T/T₁=1/1-44)
Jatill 513
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