Assuming ideal op-amps, the circuit represents a

Consider the OP AMP based circuit shown in the figure. Ignore the conduction drops of diodes  and . All the components are ideal and the breakdown voltage of the Zener is . Which of the following statements is true?

The output impedance of a non-ideal operational amplifier is denoted by  The variation in the magnitude of  with increasing frequency, f, in the circuit shown below, is best represented by         

The approximate transfer characteristic for the circuit shown below with an ideal operational amplifier and diode will be         

The saturation voltage of the ideal op – amp shown below is ±10V. The output voltage  of the following circuit in the steady – state is

An op-amp having a slew rate of 62.8 V/µsec, is connected in a voltage follower configuration.  If the maximum amplitude of the input sinusoid is 10V, then the minimum frequency at which the slew rate limited distortion would set in at the output is

An analog comparator is a high-gain amplifier whose output is always either in positive or in negative saturation. (True=1, False=0)

Given figure shows a two-stage small signal transistor feedback amplifier. Match the defective component (listed on the left hand side below) with its probable effect on the circuit (listed on the right hand side below)

(a) Capacitor  is open

(b) Capacitor  is open

(c) Capacitor  is open

(d)  is shorted

(P) All dc voltages normal,  increases marginally

(Q) Collector of  is at ,

(R) All dc voltages normal, gain of  stage increase  decrease

(S) All dc voltages normal,

(T) All dc voltages normal, overall gain of the amplifier increases,  increases

(U) No change