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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then

 Ph will decrease but Pe will remain same
 Ph will increase but Pe will decrease
 both hysteresis loss(Ph) and eddy current loss(Pe) will increase
 Pe will increase but Ph will decrease

ANSWER DOWNLOAD EXAMIANS APP