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Q#1 Induction Machines GATE EE 2014 MCQ +2 marks -0.66 marks

A three-phase slip-ring induction motor, provided with a commutator winding, is shown in the figure. The motor rotates in clockwise direction when the rotor windings are closed. 

If the rotor winding is open circuited and the system is made to run a rotational speed  with the help of prime-mover in anti-clockwise direction, then the frequency of voltage across slip rings is  and frequency of voltage across commutator brushes is . The values of  respectively are

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Network Analysis 259 0 0
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Control Systems 201 0 0
Analog Electronics 180 0 0
Digital Electronics 148 0 0
Electrical Machines 390 0 0
Power Electronics 237 0 0
Power Systems 343 0 0
EMFT EE 9 0 0
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