Download Basic Electrical and Electronics Engineering

ST.MARTIN’S ENGINEERING COLLEGE
DHULAPALLY,SECUNDERABAD-14
ELECTRICAL AND ELECTRONICS ENGINEERING
QUESTION PAPER
Course Name
: BASIC ELECTRICAL AND ELECTRONICS ENGINEERING
Course Code
: EE106ES/EE205ES
Class
: I B. Tech I Semester
Branch
: Electrical and Electronics Engineering
Year
: 2016 – 2017
Course
Coordinator
: Mr.T.Achyutha Rao , Professor, EEE
Team of
Instructors
:
Mr.G.Sridhar babu, Associate professor,EEE
Mr.V.Sunil kumar , Associate professor,EEE
Mr.CH.Srinivas , Associate professor,EEE
Mrs.S.Trilochana , Assistant professor,EEE
Mrs.S.Gayathri,Assistant Professor, EEE
Ms. D.Navitha ,Assistant professor, EEE
Mrs.C.N.Sangeetha, Assistant professor, EEE
S.NO
QUESTION
Blooms
Taxonomy
Level
Course
Outcome
PART A(SHORT ANSWER QUESTIONS)
1
Find the other resistor value when two resistors are connected in parallel , and the
equivalent resistance is 8Ω. One of the resistor is 12Ω..
Remembering 1
2
Find the resistance of 2000W heater when a voltage of 230 V A.C is applied across it
Remembering 2
3
Find the current when a charge of 600 coulombs is passed through a resistance for 10
minute .
Remembering 1
4
Find the equivalent star resistance for a delta with a resistance of 6, 12 and 24 Ω
Remembering 1
5
Find total current and current in each branch when two resistors 6 and 3 Ω are
connected in parallel the same combination is connected in series with 2Ω the total
voltage applied to the circuit is 12V
What is the load to be connected to get the maximum power transfer when the source
resistance of a voltage is 10 Ω.
Remembering 1
Define reciprocity theorem
Define reactance and impedance
List the units of admittance, susceptance, conductance
Find the frequency given V=Vmsin314t
Remembering
Remembering
Analyzing
Remembering
6
7
8
9
10
Remembering 5
5
2
2
2
11
Define phase difference
Remembering 2
12
Find the power factor given Z=3+4j Ω
Remembering 2
13
Find the current In a series circuit with R=10Ω , XL= 20Ω,XC= 20Ω and applied
voltage across the circuit is 230V, 50Hz
Remembering 3
14
What is resonance frequency
Remembering 3
15
What is the magnitude of the current when the power in a series RLC circuit will be
half of that at resonance?
Remembering 3
16
What is the locus of the current in locus diagram?
Remembering 3
S.NO
QUESTION
Blooms
Taxonomy
Level
Course
Outcome
PART B ( THEORY QUESTIONS)
1.
2
3
4
Explain Thevenin’s theorem with statement.
What is series resonance and parallel resonance?
Explain Kirchhoff’s laws with examples.
Define and Derive the RMS equation for a sine wave
Understanding
Remembering
Understanding
Remembering
5
3
1
2
5
6
Define and derive the average value for a sine wave.
What is the total power when two bulbs of 40W/ 230V and 60W/230v connected in
parallel?
Find the Impedance of the (RLC) circuit connected in series and mention units of each
quantity
What is the resistance of the ideal voltage source and ideal current source also define
dependent and independent source?
Explain Tellegens theorem with an example
Explain source transformation with examples
Define charge, voltage, current, power, energy.
Explain Millman’s theorem with statement.
Explain Maximum power transfer theorem with example.
Evaluate locus diagram for RL series circuit with R variable
Explain ohms law with statement
Determine (a) lamp resistance (b) lamp current (c) energy consumed by lamp in 10 hrs
in a 230V
100W incandescent lamp.
Remembering
Remembering
2
1
Remembering
2
Remembering
1
Understanding
Understanding
Remembering
Understanding
Understanding
Evaluating
Understanding
Evaluating
5
1
1
5
5
3
1
1
QUESTION
Blooms
Taxonomy
Level
7
8
9
10
11
12
13
14
15
16.
S.NO
Course
Outcome
PART C( PROBLEMS)
1.
What is the value of “R” to get the maximum power Vs=12 V?
Remembering
5
2.
Find the voltage across terminals a and b in fig.
Remembering
5
3.
Determine the equivalent resistance between A and B, In the circuit shown in fig
Evaluating
1
4.
Find
Vs=12 V
Remembering
2
the
power
in
each
element
5.
Find The value of VX, VY and Vz in the fig shown
Remembering
1
6.
Find the value of the resistance R connected across the terminals A and B which will
absorb the maximum power
Remembering
5
7.
Find the current in branch ‘ab’ by using super position theorem
Remembering
5
8.
Find the current in each branch
Remembering
2
9.
Determine the current through the 5Ω resistor by using Kirchhoff’s laws
Evaluating
1
10.
What is the total power when two bulbs of 40W/230V and 60W/ 230V connected in
series and parallel?
Remembering
1
UNIT – III P-N JUNCTION DIODE
SHORT ANSWER QUESTIONS
1
2
3
4
5
6
7
8
Remember
4
Define Fermi level?
Understand
4
List the differences between ideal diode and practical diode?
Distinguish between drift and diffusion current in a semiconductor?
Understand
Remember
4
4
Sketch the V-I characteristics of p-n junction diode for forward bias
voltage?
Analyze
4
Draw the Energy-Band diagram for semiconductor.
Understand
4
Define Static and Dynamic Resistances.
Remember
4
Write the equation for diode current?
Understand
4
Explain the working of P-N Junction Diode under Forward and Understand
Reverse Bias Conditions.
4
Define Fermi level? By indicating the position of Fermi level in Remember
intrinsic, n-type and p-type semiconductor, explain its significance in
semiconductors?
Analyze
Derive an expression for total diode current starting from Boltzmann
relationship in terms of the applied voltage?
Define depletion region at p-n junction? What is the effect of Understand
forward and reverse biasing of p-n junction on the depletion region?
Explain with necessary diagrams?
Analyze
Explain the concept of load line analysis?
4
Remember
4
Determine the values of forward current in the case of P-N junction
diode, with IO =10 µA VO =0.8V at T=300O K. Assume silicon diode?
Evaluate
4
Determine the dynamic forward and reverse resistance of p-n
junction silicon diode when the applied voltage is 0.25 V at T=300 O K
with give IO =2 µA?
Evaluate
4
Define electronics and write the applications of diode?
LONG ANSWER QUESTIONS
1
2
3
4
5
6
Explain the temperature dependence of VI characteristics of PN
diode?
4
4
4
PROBLEMS
1
2
3
4
5
A P-N junction germanium diode has a reverse saturation current of
0.10 µA at the room temperature of 27O C. It is observed to be 30µA,
when the room temperature is increased. Evaluate the room
temperature?
Analyze
4
Find the value of D.C. resistance and A.C resistance of a Germanium
junction diode at 25O C with reverse saturation current, IO = 25μA
and at an applied voltage of 0.2V across the diode?
Evaluate
4
The reverse saturation current of a silicon p – n function diode at an
operating temperature of 27O C is 50 nA. Estimate the dynamic
forward and reverse resistances of the diode for applied voltages of
0.8 V and -0.4 V respectively?
Analyze
4