Q1:

Which one of the following statements is not correct with regard to power amplifiers?

Q2:

Consider the following:

1.Distortion

2.Gain

3.Bias stabilization

4.Sensitivity

5.Frequency response

Which of these properties of the power amplifier one should concentrate upon while designing a good power amplifier circuit?

Q3:

Match List-I (type of amplifier) with List-II (property) and select the correct relation between the Lists?

List-I	List-II
A. Single ended class- A	1. Meduim efficiency with minimum distortion.
B .Class - AB push-pull	2. High efficiency with cross over distortion.
C. Class - B push-pull	3. Harmonic generator with highest possible conversion efficiency
D. Class - C.	4. Poor conversion efficiency with minimum distortion.

 

Q4:

In case of Class A amplifier the ratio (efficiency of transformer coupled amplifier)/(efficiency of a transformer less amplifier) is?

Q5:

Which one of the following power amplifiers has the maximum efficiency?

Q6:

Which one of the following statements is not correct with regard to power amplifiers?

Q7:

The circuit shown in the figure is that of

Q8:

A non-inverting op-amp is shown below (assume ideal op-amp)

The output voltage V₀ for an input V_i = [2 + sin (100t)] V is

Q9:

Assume that the op-amp has infinity input resistance and zero O/P resistance if open loop voltage gain of the amplifier is 200. The value of feedback factor $(\beta )$is

Q10:

An op-amp circuit is shown in the figure given below. Different inputs and output are given under List-I(input) and list -II(outputs) and select the correct answer using the codes given below the lists:

Q11:

The op-amp circuit shown below represents a:

Q12:

In the circuit shown in the given figure, V_i = Sin(t ), then V₀ is given by:

Q13:

The circuit of figure uses on ideal op-amp for small positive values of v_in, the circuit works as.

Q14:

An ideal op-amp is an ideal:

Q15:

Assertion (A): In an op-amp circuit when one input terminal of the op-amp is grounded, the other terminal becomes a Virtual ground.

Reason (R) : Input impedance of the op-amp is high.