Electrical Machines
A 220 V DC machine has an armature resistance 1 Ω. If the full load current is 20 A, the difference of induced voltage between generator and motor is

 60 V.
 0 V.
 40 V.
 20 V.

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Electrical Machines
In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed?

 The speed will increase abruptly.
 The speed will increase gradually.
 The speed will increase in proportion to reduction in load.
 The speed will remains almost constant.

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