DEPARTMENT OF BASIC SCIENCE & HUMANITIES
Question Bank
Semester: II CS A & B
2022
Scheme:
Subject: Introduction to Electronics &
Communication
Subject Code:BESCK104C
Module-1
Q.
No.
Question
COs
CL
1
What is a regulated power supply? With neat block diagram, summarize the
working of DC power supply. Also mention the principal components used
in each block.
CO1
L2
2
Discuss the need of filter circuit. With circuit diagram and waveforms brief
out the operation of smoothing filter for full wave rectifiers.
CO1
L2
3
With neat diagram Summarize working principle of the voltage divider bias
CE amplifier with feedback.
CO1
L2
4
A 5V zener diode has a maximum rated power dissipation of 500 mW. If the
diode is to be used in a simple regulator circuit to supply a regulated 5V to a
load having a resistance of 500 Ω, determine a suitable value of series
resistor for operation in conjunction with a supply of 9V.
CO1
L3
5
What is voltage multiplier and mention its applications? With circuit diagram
brief out the operation of voltage Tripler circuit
CO1
L2
6
Explain the operation of a simple shunt Zener voltage regulator.
CO1
L2
CO1
L3
CO1
L2
7
8
The following measurements were made during a test on an amplifier:
Vin= 250 mV, Iin = 2.5 mA, Vout = 10 V, Iout = 400 mA
Determine: (a) the voltage gain (b) the current gain (c) the power gain (d) the
input resistance.
Explain the working of bi-phase full wave rectifier circuit with neat diagram
and waveforms.
9
With circuit diagram explain the following: Voltage Doubler, Voltage
Tripler
CO1
L2
10
Explain the concept of negative feedback with a neat diagram.
CO1
L1
CO1
L1
What are multi-stage amplifiers? Explain the different methods used for inter
stage coupling?
CO1
L2
A 6 V zener diode has a maximum rated power dissipation of 500 mW. If the
diode is to be used in a simple regulator circuit to supply a regulated 6 V to a
CO1
L3
11
12
13
List and describe the main types of amplifiers.
load of 500 Ω, determine a suitable value of series resistor for a supply of 12
V.
14
With neat circuit diagram and waveforms explain the working of bridge
rectifier.
CO1
L2
15
Explain the following terms related to amplifier: (a) Frequency response (b)
Bandwidth (c) Phase shift
CO1
L2
Explain the conditions for sustained oscillations. Determine the frequency
of oscillation of a three-stage ladder network in which C=10 nF and R=10
kΩ.
With suitable circuit diagram, explain single stage astable multivibrator
using operational amplifier.
CO1
L3
CO1
L2
3
With a neat circuit diagram and waveforms, describe the operation of crystal
controlled oscillator.
CO1
L2
4
Define the following with respect to operational amplifiers and write their
typical values:
i) Open loop voltage gain ii) Input offset voltage iii) Full power bandwidth
and iv) Slew rate
Sketch the circuits of each of the following based on use of Operational
Amplifier
(a) Voltage follower (b) Differentiator (c) Integrator (d) Comparator (e)
Summing amplifier
Write a note on ideal characteristics of op-amp.
CO1
L2
CO1
L1
CO1
L1
With a neat circuit diagram, explain the working of Wien bridge oscillator
using op-amp.
With a neat circuit diagram, explain ladder network oscillator
CO1
L2
CO1
L2
9
Explain the concept of positive feedback with a neat diagram. Show how
positive feedback increases the overall gain of an amplifier.
CO1
L2
10
What is a multivibrator? What are the principal types of multivibrators?
Distinguish between them.
CO1
L1
Module-2
1
2
5
6
7
8
Module-3
1
2
3
4
State and prove De Morgan’s theorem with its truth table.
Perform subtraction on the given numbers using 9’s complement method:
(a) 4,637 - 2,579 (b) 125 - 1,800
Perform subtraction on the given numbers using 10’s complement method:
(a) 2,043 - 4,361 (b) 1,631 – 745
Convert the following:
i. (110.1101)2=(?)10
CO2
CO2
L1
L3
CO2
L3
CO2
L3
5
ii. (847.951)10=(?)8
iii. (CAD.BF)16=(?)10
Perform subtraction on the given binary numbers using 2’s complement method:
(a) 1001 - 110101 (b) 101000 – 10101
CO2
L3
6
With the help of truth table explain the operation of full adder with its circuit
diagram and reduce the expression for sum and carry.
CO2
L2
7
Mention the different theorems and postulates of Boolean algebra and prove each
of them with truth table.
Express the Boolean function F=A+B′C in a sum of minterms.
CO2
L1
CO2
CO2
L3
L3
L3
L1
8
9
Simplify the following Boolean functions to minimum number of literals:
i) x+x′y
ii) x(x′+y)
iii) x′y′z+x′yz+xy′
iv) xy+x′z+yz
10
11
Express the Boolean function F=xy+x′z in a product of maxterms.
Write the steps involved in the design of combinational circuits
CO2
CO2
12
Perform subtraction on the given binary numbers using 2’s complement method:
CO2
L3
What is an embedded system? Compare Embedded systems with general
purpose computer systems.
Mention the classification of embedded system based on complexity and
performance.
List the comparison between microprocessor and microcontroller.
Write a note on classification of embedded systems, also provide application
of Embedded Systems.
Explain the differences between RISC and CISC processors.
With a neat diagram, explain an instrumentation and control system.
CO3
L2
CO3
L1
CO3
CO3
L2
L2
CO3
CO3
L2
L2
Write a note on core of an embedded system with its block diagram.
Discuss the typical embedded system elements.
Write a short note on transducers, sensors and actuators.
Explain how 7-segment display can be used to display the data and write a
brief note on operation of LED
CO3
CO3
CO3
CO3
L2
L2
L2
L2
CO4
CO4
CO4
L2
L2
L2
CO4
L2
(a) 1001 - 110101 (b) 101000 - 10101
Module-4
1
2
3
4
5
6
7
8
9
10
Module-5
1
2
3
4
Brief about modern communication system with its block diagram.
Discuss the types of communication systems
Explain with a neat diagram the concept of radio wave propagation and its
different types.
List the advantages of Digital communication over Analog communication
5
Write a note on different types of modulations and briefly describe each in CO4
detail.
L2
6
7
Describe about radio signal transmission and multiple access techniques.
Consider the following binary data 1100101 and sketch the ASK, FSK &
PSK modulated waveforms.
Define Amplitude and Frequency Modulation. Sketch AM and FM
waveform.
What is Modulation? Explain Amplitude Modulation (AM) and Frequency
Modulation (FM).
Write a short note on: Amplitude shift keying (ASK) modulator and
demodulator.
CO4
CO4
L2
L3
CO4
L1
CO4
L2
CO4
L2
8
9
10