Behavior of a transistor in power amplifiers is unpredictable at all input signal levels.

Related MCQs

•                        amplifiers are linear circuits, where the transistor is biased to conduct over the entire range of the input signal cycle.
• Klystron amplifiers have high noise output as compared to crossed field amplifiers.
•                      is defined as the ratio of input signal to noise ratio to the output signal to noise ratio.
• Gain of power amplifiers                      with increase in operating frequency.
• Power amplifiers in the increasing order of efficiency is:
• If a power amplifier has an output power of 10 W, and an amplifier gain of 16.4 dB, then the input drive power is:
• In distributed amplifiers, all the FET stages in the amplifier are connected in series to one another.
• In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with                   at all frequencies other than required harmonic.
•                        is defined as the ratio of desired signal power to undesired noise power.
• High gain is not achievable at microwave frequencies using BJT amplifiers because: