Electrical Machines
A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be

 450 rpm.
  470 rpm.
 540 rpm.
  240 rpm.

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Electrical Machines
In synchronous generator, inverted V curve is drawn between

 field current on X-axis and power factor on Y-axis
 field current on Y-axis and power factor on X-axis
 field current on X-axis and armature current on Y-axis
 field current on Y-axis and armature current on X-axis

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Electrical Machines
No load primary current in a transformer

 lags behind applied voltage by exactly 90Â&am
 leads the applied voltage by exactly 90Â&
 leads the applied voltage somewhat less than 90Ã&
 lags behind applied voltage somewhat less than 90Ã

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