Q. In a bistable multivibrator, commutating capacitors are used to

View solution

Q. Which of the following values represents the open loop gain of typical op-amp?

View solution

Q. Which of the following configuration has low thermal stability?

View solution

Q. Efficiency of class A power amplifier is very poor.

View solution

Q. An ideal op-amp can amplify dc signals

View solution

Q. Consider the following statements :The lower cut off frequencies of an RC coupled amplifier depend on

1. input and output coupling capacitor
2. emitter by pass capacitors
3. junction capacitances

Which of the above are correct?

View solution

Q. Assertion (A): In a circuit using FET, gate is approximately at dc ground

Reason (R): Self bias stabilizes the quiescent operating point against changes in JFET parameters

View solution

Q. The Darlington pair consists of the following two stages

View solution

Q. A Clapp's oscillator is

View solution

Q. A quiescent state of a transistor implies

View solution

Q. A transistor may fail due to

View solution

Q. In a P-N-P transistor, with normal bias, the emitter junction

View solution

Q. The pinch-off voltage is the drain voltage on the shorted gate drain curve above which the drain current becomes

View solution

Q. Which of the following plot can be used to show the input volt-ampere characteristics of a common-emitter configuration?

View solution

Q. A transconductance amplifier has

View solution

Q. The signal input to a given amplifier is made up of 100 mΩ signal power and 1 mΩ noise power. The amplifier contributes an additional 100 mΩ of noise and has a power gain of 20 dB. The output signal-to-noise ratio is

View solution

Q. In order to protect a MOSFET against damage from any stray voltage at the gate

View solution

Q. A dc amplifier can operate

View solution

Q. Assertion (A): In a common source amplifier with source terminal at ac ground the voltage gain is about gm rd

Reason (R): A common source amplifier is a source follower circuit

View solution

Q. Thermal runaway will take place if the quiescent point is such that

View solution