Question

Which of the following power amplifiers has highest efficiency?

a.

Class A

b.

Class AB

c.

Class B

d.

Class C

Answer: (d).Class C

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. Which of the following power amplifiers has highest efficiency?

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. A full wave rectifier using centre tapped transformer and a bridge rectifier use similar diodes and have equal no load output voltage. Under equal load conditions

Q. In an amplifier with a gain of - 1000 and feedback factor β = - 0.1, the change in gain is 20% due to temperature. The change in gain for feedback amplifier will be

Q. The open loop gain of an amplifier is 200. If negative feedback with β = 0.2 is used, the closed loop gain will be

Q. In a class C power amplifier the input signal has a frequency of 250 kHz. If the collector current pulses are 0.1 μs wide, the duty cycle of current waveform is

Q. The dissipation at the collector is in the quiescent state and increases with excitation in the case of a

Q. The open loop gain of an ideal op-amp is

Q. The ideal characteristics of a stabilizer is

Q. A difference amplifier using op-amp has closed loop gain = 50. If input is 2 V to each of inverting and non-inverting terminals, output is 5 mA. Then CMRR =

Q. The coupling capacitor in amplifier circuits

Q. An ideal op-amp has zero slew rate.

Q. In a bridge rectifier circuit the rms value of input ac voltage is 10 V. The PIV across each diode is

Q. In a half wave diode rectifier circuit the current flows in the load circuit for

Q. In a push pull circuit

Q. A transistor with a = 0.9 and ICBO = 10 μA is biased so that IBQ = 90 μA. Then IEQ will be

Q. The ripple factor of a half wave rectifier is more than 2.

Q. In a CE amplifier drives a low load resistance directly the result will be

Q. For high frequencies a capacitor like

Q. In an amplifier the voltage gain is the ratio of

Q. A typical value of gm for a FET is about 25 μs.

Q. A transistor has two p-n junctions. The batteries should be connected such that

Recommended Subjects

Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!