August
V63/T04041/EE/20150818
2015
Applied Electronics
Instructions: 1. All questions are compulsory.
2. “Long Answer type Question (LAQ)” is a supply type
question of 15 marks which required a typical answer of about
60-80 lines in bout 32-40 minutes.
3. “Sort Answer type Question (SAQ)” is a supply type question
of 5 marks which required a typical answer of about 15-20 lines
in bout 08-10 minutes.
4. Figures to the right indicate marks allotted to the questions.
5. Assume suitable data if necessary
6. Use a nonprogrammable type of scientific calculator is
allowed
Marks-80
Time: 3 Hrs
Marks
SECTION-A
Q.1 Explain:a) The importance and application of quality factors
b) Variation in different quantities in frequency.
10
05
OR
Q.1 a) State and explain the comparison of Class-A, Class-B, Class-C
Power amplifiers
b) What tuned amplifier used for amplification.
Q.2 Define the following:a) Increased stability.
b) Increased Bandwidth.
c) Decreased distortion.
10
05
15
OR
Q.2 a) In transistorized Hartley oscillator, the tank circuit with
component C=100pF, L1=30mH and L2 =1*10-8 Henry.
Determine the frequency of oscillations.
15
b) By applying the concept of negative feedback, draw the block
dia. Of amplifier with negative feedback. Derive the expression for
the gain of negative feedback amplifier i.e. If in terms of amplifier
gain A and feedback factor β=1/10 and A=90, Calculate the gain If
of amplifier. Write conclusion drawn from calculated value of If
and A.
Q.3 State the advantage of negative feedback.
5
Q.4 Define the following:a) Current series feedback.
b) Voltage Series feedback.
5
SECTION-B
Q.5 Explain the working of sweep circuit using a transistor switch.
Draw the corresponding waveforms.
15
OR
Q.5 Explain the comparison of Astable, Monostable and Bistable
multivibrators? State its uses.
15
Q.6 Describe and show diagrammatically regulated power supply.
15
OR
Q.6 What are the three terminal voltage Regulators? Show it
diagrammatically.
15
Q.7 State transistor as a switch with output waveforms.
5
Q.8 Draw the Block Diagram, Waveforms using Bridge Rectifier.
5
Computer Generated Random Question Paper dated: 07-07-2015 10:56:36
***BEST OF LUCK***