Exam Details
Subject | basic electrical and electronics engineering | |
Paper | ||
Exam / Course | b.tech | |
Department | ||
Organization | Institute Of Aeronautical Engineering | |
Position | ||
Exam Date | December, 2017 | |
City, State | telangana, hyderabad |
Question Paper
Hall Ticket No Question Paper Code: AEE018
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
B.Tech III Semester End Examinations (Regular) December, 2017
Regulation: IARE R16
BASIC ELECTRICAL AND ELECTRONICS ENGINEERING
(Common for AE CE ME)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. State and illustrate the Ohm's law with an example. What are its limitations and its applications?
I. Illustrate how the voltage is divided in a series circuit with an example.
II. Find the equivalent resistance between B and C in the circuit shown in Figure 1.
Figure 1
2. Determine currents and voltages in the circuit shown in Figure 2 by applying KVL.
Figure 2
Page 1 of 3
Illustrate the principle of operation of permanent magnet moving coil instruments with relevant
figure. Mention its advantages and drawbacks.
UNIT II
3. Explain the different types and its detailed classification of DC generators with relevant figures
and equations.
I. Illustrate the significance of back E.M.F. in a dc motor with relevant figure for the same and
give its equivalent circuit.
II. A 4 pole, DC motor has lap connected armature winding. The flux per pole is 30 mWb.
The number of armature conductors is 250. When connected to 230 V DC supply it draws an
armature current of 40 A. Calculate the back E.M.F. and the speed with which motor is running.
Assume armature resistance is 0.6
.
4. I. Derive the expression for the E.M.F. induced in a DC machine by defining all the terms clearly.
II. A 4 pole, lap wound, DC generator has a useful flux of 0.07 Wb per pole. Calculate the
generated E.M.F. when it is rotated at a speed of 900 rpm with the help of prime mover. Armature
consists of 440 number of conductors. Also calculate the generated E.M.F. if lap wound armature
is replaced by wave wound armature.
Illustrate the working principle of a DC motor with relevant figure. Explain the various characteristics
of DC motor.
UNIT III
5. Determine the average and R.M.S values of a sine wave.
A single phase 2200/250 50 Hz transformer has a net core area of 36 cm2 and maximum flux
density of 6 wb/m2. Calculate the number of turns in primary and secondary coils.
6. What is an induction motor? Explain the following two types of 3-phase Induction motors with
relevant figures.
i. Squirrel-cage induction motors
ii. Wound rotor on slip ring induction motor
I. A 3-phase, 4-pole, 50 Hz induction motor is running at 1455 rpm. Find the slip speed and slip.
II. A 3-phase, 12-pole alternator is coupled to an engine running at 500 rpm The alternator
supplies an induction motor which has a full speed 1455 rpm. Find the slip and the number of
poles of the motor.
UNIT IV
7. Explain the working principle of a full wave bridge rectifier with neat circuit diagram and list its
advantages and disadvantages.
Classify types of diodes? Explain any two.
8. What is a rectifier? Illustrate the operation of half wave rectifier with a neat figure.
Illustrate what is Zener breakdown. A diode operating at 300K at a forward voltage of
0.4 V carries a current of 10 mA. When voltage is changed to 0.42 the current becomes twice.
Calculate the value of reverse saturation current and for the diode.
Page 2 of 3
UNIT V
9. Illustrate the input and output characteristics of common emitter configuration with a neat figure.
I. Draw the circuit symbol for a PNP and NPN transistors. Indicate the reference directions of
three currents and polarities of three voltages.
II. If the base current in the transistor is 20 when the emitter current is 6.4 mA, what are
the values of dc and dc? Also calculate the collector current.
10. In a common base connection if the emitter current is 1 mA and current amplification factor is
0.9.
i. Determine base current
ii. Find the total collector current, if the emitter circuit is open the collector current is 50 mA.
Write a short note on following
i. Transistor as an amplifier
ii. Transistor biasing
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
B.Tech III Semester End Examinations (Regular) December, 2017
Regulation: IARE R16
BASIC ELECTRICAL AND ELECTRONICS ENGINEERING
(Common for AE CE ME)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. State and illustrate the Ohm's law with an example. What are its limitations and its applications?
I. Illustrate how the voltage is divided in a series circuit with an example.
II. Find the equivalent resistance between B and C in the circuit shown in Figure 1.
Figure 1
2. Determine currents and voltages in the circuit shown in Figure 2 by applying KVL.
Figure 2
Page 1 of 3
Illustrate the principle of operation of permanent magnet moving coil instruments with relevant
figure. Mention its advantages and drawbacks.
UNIT II
3. Explain the different types and its detailed classification of DC generators with relevant figures
and equations.
I. Illustrate the significance of back E.M.F. in a dc motor with relevant figure for the same and
give its equivalent circuit.
II. A 4 pole, DC motor has lap connected armature winding. The flux per pole is 30 mWb.
The number of armature conductors is 250. When connected to 230 V DC supply it draws an
armature current of 40 A. Calculate the back E.M.F. and the speed with which motor is running.
Assume armature resistance is 0.6
.
4. I. Derive the expression for the E.M.F. induced in a DC machine by defining all the terms clearly.
II. A 4 pole, lap wound, DC generator has a useful flux of 0.07 Wb per pole. Calculate the
generated E.M.F. when it is rotated at a speed of 900 rpm with the help of prime mover. Armature
consists of 440 number of conductors. Also calculate the generated E.M.F. if lap wound armature
is replaced by wave wound armature.
Illustrate the working principle of a DC motor with relevant figure. Explain the various characteristics
of DC motor.
UNIT III
5. Determine the average and R.M.S values of a sine wave.
A single phase 2200/250 50 Hz transformer has a net core area of 36 cm2 and maximum flux
density of 6 wb/m2. Calculate the number of turns in primary and secondary coils.
6. What is an induction motor? Explain the following two types of 3-phase Induction motors with
relevant figures.
i. Squirrel-cage induction motors
ii. Wound rotor on slip ring induction motor
I. A 3-phase, 4-pole, 50 Hz induction motor is running at 1455 rpm. Find the slip speed and slip.
II. A 3-phase, 12-pole alternator is coupled to an engine running at 500 rpm The alternator
supplies an induction motor which has a full speed 1455 rpm. Find the slip and the number of
poles of the motor.
UNIT IV
7. Explain the working principle of a full wave bridge rectifier with neat circuit diagram and list its
advantages and disadvantages.
Classify types of diodes? Explain any two.
8. What is a rectifier? Illustrate the operation of half wave rectifier with a neat figure.
Illustrate what is Zener breakdown. A diode operating at 300K at a forward voltage of
0.4 V carries a current of 10 mA. When voltage is changed to 0.42 the current becomes twice.
Calculate the value of reverse saturation current and for the diode.
Page 2 of 3
UNIT V
9. Illustrate the input and output characteristics of common emitter configuration with a neat figure.
I. Draw the circuit symbol for a PNP and NPN transistors. Indicate the reference directions of
three currents and polarities of three voltages.
II. If the base current in the transistor is 20 when the emitter current is 6.4 mA, what are
the values of dc and dc? Also calculate the collector current.
10. In a common base connection if the emitter current is 1 mA and current amplification factor is
0.9.
i. Determine base current
ii. Find the total collector current, if the emitter circuit is open the collector current is 50 mA.
Write a short note on following
i. Transistor as an amplifier
ii. Transistor biasing
Other Question Papers
Subjects
- ac machines
- advanced databases
- aircraft materials and production
- aircraft performance
- aircraft propulsion
- aircraft systems and controls
- analog communications
- analysis of aircraft production
- antennas and propagation
- applied physics
- applied thermodynamics
- basic electrical and electronics engineering
- basic electrical engineering
- building materials construction and planning
- business economics and financial analysis
- compiler design
- complex analysis and probability distribution
- computational mathematics and integral calculus
- computer networks
- computer organization
- computer organization and architecture
- computer programming
- concrete technology
- control systems
- data structures
- database management systems
- dc machines and transformers
- design and analysis of algorithms
- design of machine members
- digital and pulse circuits
- digital communications
- digital ic applications using vhdl
- digital logic design
- digital system design
- disaster management
- disaster management and mitigation
- discrete mathematical structures
- dynamics of machinery
- electrical circuits
- electrical measurements and instrumentation
- electrical technology
- electromagnetic field theory
- electromagnetic theory and transmission lines
- electronic circuit analysis
- electronic devices and circuits
- elements of mechanical engineering
- engineering chemistry
- engineering drawing
- engineering geology
- engineering mechanics
- engineering physics
- english
- english for communication
- environmental studies
- finite element methods
- fluid mechanics
- fluid mechanics and hydraulics
- fundamental of electrical and electronics engineering
- fundamental of electrical engineering
- gender sensitivity
- geotechnical engineering
- heat transfer
- high speed aerodynamics
- hydraulics and hydraulic machinery
- image processing
- industrial automation and control
- instrumentation and control systems
- integrated circuits applications
- introduction to aerospace engineering
- kinematics of machinery
- linear algebra and calculus
- linear algebra and ordinary differential equations
- low speed aerodynamics
- machine tools and metrology
- mathematical transform techniques
- mathematical transforms techniques
- mechanics of fluids and hydraulic machines
- mechanics of solids
- mechanism and machine design
- metallurgy and material science
- microprocessor and interfacing
- modern physics
- network analysis
- object oriented analysis and design
- object oriented programming through java
- operating systems
- optimization techniques
- power electronics
- power generation systems
- probability and statistics
- probability theory and stochastic processes
- production technology
- programming for problem solving
- pulse and digital circuits
- reinforced concrete structures design and drawing
- software engineering
- strength of materials - i
- strength of materials - ii
- structural analysis
- surveying
- theory of computation
- theory of structures
- thermal engineering
- thermo dynamics
- thermodynamics
- tool design
- transmission and distribution systems
- unconventional machining processes
- waves and optics
- web technologies