UP polytechnic Lecturer (EE) Quiz 38

Consider the following statement:

1: Negative sequence relay is used in alternator

2: Impedance relay is non-directional voltage restraint over-current

3: MHO relay is non-directional relay, and used for long transmission line protection

Which of the following is correct

Identify the Boolean function for the given switching circuit.

The rotor of a stepper motor has no

The input impedance of a common base transistor is

For an FM signal, unmodulated carrier frequency in MHz is_____, provided, f_max = 1.5 MHz, Δf = 450 kHz.

A 60 KHz carrier is Amplitude modulated by the speech band of 300 to 3000 Hz. The range of upper side bands will be

A polarized relay is

Find the number of poles of a 3-phase induction motor when synchronous speed of motor is 600 rpm and supply frequency is 50 Hz.

Kick fuses are used across relay coils to prevent relay operation during

Which part of circuit breaker is helpful in breaking the current ?