Electrical Machines
A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be

None of these
 3.2% and -1.6%
 4.8% and -3.2%
 6% and -4%

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

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