Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?

Related Mcqs:

A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A.Its output resistance & load regulation ,respectively are_____________?

A. 5 Ω & 20 % B. 25 Ω & 20 % C. 5 Ω & 16.7 % D. 25 Ω & 16.7 %...

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...

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...