ISRO Scientist or Engineer Electrical 2014

A pony motoris used for the starting of which of the following motor

A PWMswitching scheme is used with three phaseinverter to

The earth wire should not be thinner than a

The ripple factor of a full-wave rectifier circuit compared to that of a half wave rectifier circuit without filter is

In a highly inductive circuit , a small capacitance is added in series. Then the angle between applied voltage and resultant current will be

The inertia constant of the two machines which are not swinging together are M1 and M2. The equivalent inertia constant of the system is:

A voltage source inverter is used to control the speed of a three-phase, 50 Hz squirrel cage induction motor. Its slip for rated torque is 4%. The flux is maintained at rated
value. If the stator resistance and rotational losses are neglected, then the impressed voltage to obtain twice the rated torque at starting should be

The charge on an electron is known to be $$1.6 \times 10^{-19}$$ coulomb. In a circuit the current flowing is 1 A. How many electrons will be flowing through the circuit in a second?

A thermal protection switch is used to provide protection against:

With V/F ratio keeping constant, if the frequency is decreased below the base value and the voltage is decreased proportionally, is fed to an Induction motor, its starting torque and the peak torque for variable frequency & voltages will be