Electronic Circuits assignment questions for backlog management system

UNIT -I
2 MARKS QUESTIONS
1	List out comparisons between CE,CB and CC configurations.
2	Write the analysis of a CE amplifier circuit using h parameters.
3	What is negative feedback amplifier?
4	What is the advantage of negative feedback amplifier?
5	Explain the closed loop gain Aβ.
3 MARKS QUESTIONS
1	Explain the input and output characteristics of a CE transistor configuration.
2	Derive the expressions for AI, AV, Ri, R0, AIs, AVs
3	Prove that Af=A/1+Aβ
4	Explain how the distortion are reduced in negative feedback amplifiers.
5      Prove that the frequency stability improves as dθ/dw increases in oscillators
5 MARKS QUESTIONS
1	Draw the hybrid-π model of BJT and explain various parameters.
2	For a CS amplifier, draw the small signal equivalent and derive expression for gain,input impedance and output impedance
3	Draw a feedback amplifier in block-diagram form. Identify each block and state its functions.
4	An amplifier has a voltage gain of -100. The feedback ratio if 0.01. Find the voltage gain with feedback, the output voltage of the feedback amplifier for an input voltage of 1mv, feedback  factor, and feedback voltage
5	Discuss the voltage-current series feedback amplifier and derive its input and output resistances
UNIT -II
2 MARKS QUESTIONS
1	Draw the hybrid-pi model, explain and derive the conductance and capacitances.
2	Draw general frequency response curve of an FET amplifier.
3	What are the factors that affect the low frequency response of (a) BJT amplifier
4	What are the factors that affect the low frequency response of (b) FET   amplifier.
5	Why the mid band frequency curve is flat?
3 MARKS QUESTIONS
1	Write a note on distortions in amplifiers.
2	Draw the high frequency equivalent of CE amplifier.
3	Draw general frequency response curve of an amplifier
4	What are the factors that affect the low frequency response of (a) BJT amplifier B)FET    amplifier. Justify with reason.
5	What is Miller effect capacitance? Explain with example.
	5 MARKS QUESTIONS
1	Derive an expression for the lower cut-off frequency of a BJT amplifier.
2	Derive all components in the Hybrid - π model in terms of h parameters in CE      Configuration
3	Draw the circuit diagram of CB- amplifier and its h-parameter equivalent circuit. List out the characteristics of a CB amplifier
4	Draw the circuit diagram and low frequency equivalent circuit of common source amplifier and derive an expression for its voltage gain
5	Explain non-linear distortion in amplifiers
UNIT -III
2 MARKS QUESTIONS
1	What is monostable multivibrator and why it is called pulse generator.
2	What is Schmitt trigger
3	What is non linear wave shaping?
4	What is  i) clipper ii) clamper?
5	State  the clamping circuit theorem
3 MARKS QUESTIONS
1	What is astable multivibrator and explain why it is called square wave oscillator
2	Explain the operation of bistable multivibrator circuit and draw the waveforms
3	What is unsymmetrical triggering? Why it is used?
4	Explain the operation of positive clamper with its waveform
5	Write the comparison between clipper and clamper.
5 MARKS QUESTIONS
1	With the help of neat circuit diagrams, explain the working of an astable multivibrators
2	What is monostable multivibrator and derive the expression for pulse width
3	Consider the Schmitt trigger with germanium transistor having hFE = 20. The circuit parameters are VCC = 15V, RS = 2kΩ, RC1= 4kΩ, RC2= 1 kΩ, R1 = 3 kΩ R2 = 10 kΩ and RE = 6 kΩ. Calculate  LTP and UTP
4	State and explain clamping circuit theorem
5	Explain the effect of diode characteristics on clamping voltage
UNIT -IV
2 MARKS QUESTIONS
1	What is power amplifier?
2	What do you understand by large signal amplifiers
3	What is linear wave shaping?
4	Compare linear wave shaping and non linear wave shaping
5	What is voltage comparator and what are the applications of voltage comparators
3 MARKS QUESTIONS
1	Explain the classification of power amplifier s based on class of operation and compare them.
2	How even harmonics is eliminated using push-pull circuit, derive the expression.
3	Why are RC circuits commonly used to compare RL circuits?
4	.   Derive the expression for output of High pass circuit excited by Ramp?
5	5.   Derive the expression for rise time.
5 MARKS QUESTIONS
1	Explain about Class-B push pull amplifier and its advantages, with neat diagram.
2	Explain the Complementary symmetry power amplifier, with neat diagram.
3	Explain about transformer-coupled class-A power amplifier
4	Explain the high pass RC circuit as differentiator.
5	Explain the low pass RC circuit as Integrator
UNIT -V
2 MARKS QUESTIONS
1	What is diode forward Recovery time?
2	What is Diode Reverse Recovery Time (Trr)?
3	What are the various breakdown voltages in diode?
4	Name the various Transistor switching times?
5	Explain  transistor operation as swith.
3 MARKS QUESTIONS
1	Explain how diode acts as a switch?
2	Define the following terms:  i. storage time ii. Delay time iii. Rise time iv. Fall time.
3	Define storage and transition times with respect to diodes.
4	Write a short notes on piecewise linear diode characteristics
5	Explain the various transistor times.
5 MARKS QUESTIONS
1	What do you mean by delay time of a transistor and what factors contribute to it?
2	Write a short notes on diode switching times
3	Write a short notes on piecewise linear diode characteristics
4	Explain how transistor acts as a switch? Draw the switching characteristics of it and        explain
5	Explain the transistor breakdown