NLC Technical Quiz 3

Parallel branch elements can be found out in a 1-ϕ transformer by conducting:

The Nyquist rate of signal x(t) = Sa(400 πt) + Sa(200πt) will be:

A step up chopper is supplied by voltage of 300 V. with on time period of 20 msec. The circuit turn off time is 2 msec. The switching frequency is 4.167 Hz.

The average output voltage is:

The total charge entering a terminal is given by q = 5t sin 4πt mc. The current at t = 0.5 sec.

To convert mechanical energy into electrical energy, one can use which of the following.

A 4 KVA, 400/200V, 1-phase transformer has leakage impedance of 0.02 + j0.04 per unit. The leakage impedance in Ohm when referred to HV side.

A bulb is a staircase has two switches one switch being at the ground floor and the other one at the first floor. The bulb can turn on and also can be turn off by any on switches irrespective of the state of other swiitch. The logic can be explained by:

Which one of the following is used as the main switching element in a switched mode power supply operating in 20 kHz to 100 kHz range?

In a 3-phase half wave and 3-phase bridge rectifier PIV will be (source voltage= V_m) (controlled)