Electrical Machines
What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb.

 30 volts.
 10 volts.
 40 volts.
 20 volts.

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

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

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