Electrical Machines
When R2 is rotor resistance, X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running condition will be

  R2 = s2X2.
  R2 = sX2.
  R2 = s2X2.
  sR2 = X2.

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Electrical Machines
Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW

 any of the above
 66.67 MW and 33.33 MW respectively
 50 MW and 50 MW respectively
 33.33 MW and 66.67 MW respectively

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Electrical Machines
In a 3 - Φ induction motor

  none of them.
  power factor at starting is high as compared to that while running.
  power factor at starting is low as compared to that while running.
  power factor at starting in the same as that while running.

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