A half wave rectifier supplies power to 1000Ω load from a 110V (r.m.s) source of supply. If the forward resistance of the diode is 20Ω. What would be the efficiency of the rectifier?

After triggering an SCR , the gate pulse is removed. the current in the SCR will _____.

A feedback amplifier has an internal gain = 40dB and a feedback factor = 0.05, if the input impedance of this circuit is 12KΩ. What would have been the input impedance of the amplifier if the feedback had not been present?

An amplifier has a gain of 10 without feedback. To make it oscillate, ß must be _____.

For designing a Push-Pull amplifier, the type of transistors should be _____.

A crystal oscillator provides very stable frequency because of _____.

For a three phase full wave rectifier, no load D.C output is _____.

In a half wave rectifier, the maximum firing angle is restricted to _____.

If the RF signal is 600 KHz and the local oscillator frequency is 1000KHz, the output of the mixer will be _____.

For a class-A power amplifier, the position of point Q is _____.

An operational amplifier can amplify ____________.