August
2015
V62/T07042/EE/20150820
Electronics Engineering
Instructions:
Marks-80
Time: 3 Hrs
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
SECTION-A
Q.1 How can a transistor worst an amplifier? Explain.
15
OR
Q.1 A) What is the application of DIAC
B) Write down on DIAC .with its basic structure and schematic
symbol.
Q.2 Describe amplifier. Explain transistor as a current amplifier.
05
10
15
OR
Q.2 Draw the circuit diagram and explain the operation of half -wave
rectifier with the help of waveform.
15
Q.3 Explain zener diode.
5
Q.4 Describe transistor as amplifier.
5
SECTION-B
Q.5 A) What is the requirement of an oscillator circuit?
B) What is the principal of an oscillator circuit? Explain with block
diagram
05
10
OR
Q.5 A) Discuss amplifier configurations.
B) Explain differential amplifier
Q.6 Explain AC motors Speed Control.
10
05
15
OR
Q.6 A) What is the general technique for converting a decimal number
to octal?
05
B) Convert the following number to their binary equivalent
(i)35910 (ii)4410 (iii)10810 (iv)20010
10
Q.7 What is the concept of feedback?
5
Q.8 Explain torque versus armature current characteristic (Ta/Ia) of
D.C. series motor.
5
Computer Generated Random Question Paper dated: 06-07-2015 12:45:56
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