An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is___________?

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A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ .At the frequency of 4KHZ,the o/p voltage will be___________?

A. 1 v B. 2v C. 1.4v D. 2.8v...

In deriving ac equivalent circuit for an amplifier circuit, we short circuit___________?

A. all resistors B. all transistors C. all inductors D. all capacitors...

The effective channel length of a MOSFET in a saturation decreases with increase in___________?

A. Gate voltage B. Drain voltage C. Source voltage D. Body voltage...

Class AB operation is often used in power large signal amplifiers in order to_________?

A. get maximum efficiency B. remove even harmonics C. overcome a crossover distortion D. reducing collector dissipation...

An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?

A. 795mV B. 395mV C. 795 mV D. 39.5mV...