Hall Ticket No Question Paper Code: AEE001
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
B.Tech II Semester End Examinations (Regular) May, 2017
Regulation: IARE R16
FUNDAMENTAL OF ELECTRICAL AND ELECTRONICS ENGINEERING
(Common for CSE/IT)
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. Differentiate between
i. voltage and current source
ii. active and passsive elements.
A dc circuit comprises of two resistors; resistor A of value 25 ohm and resistor B of unknown
value, connected in parallel, together with a third resistor C of value 5 ohm, connected in series
with the parallel branch. Find the voltage to be applied across the whole circuit and the value of
the resistor B if the potential difference across C is 90V, and the total power consumed is 4320W.

2. Find the value of R shown in figure such that the power dissipated in the 5
resistor is 100W.
Assume that the internal resistance of the battery of 50V is 1
.
Figure 1
A voltage v=10 sin 314t is applied to an inductance of 5mH. Determine instantaneous power
p and average power pavg.
UNIT II
3. Find the voltage across 1Ω resistor and current through 2
resistor for the circuit shown in figure
2 using nodal method.
Page 1 of 3
Figure 2
State and explain Thevenin's and Norton's theorems using any example.
4. Define and explain the following terms:
i. Twigs
ii. Co-tree
iii. Links
iv. Branch.
Determine the basic cutset matrix for the oriented graph given in figure 3 where in the elements
1,2 and 3 are tree branches.
Figure 3
UNIT III
5. Derive the delta star transformation of a resistive network.
Explain how reactive power could be measured in a three phase circuit using single wattmeter
method.
6. A choke coil has a resistance of 2 ohm and inductance of 5H. A capacitor C is connected in series
with the choke coil and the combination is fed from a 230V, 50Hz supply. What should be the
value of C so that the voltage across the choKe coil is 250V.
Explain the power measurement methods in
i. balanced three phase loads
ii. unbalanced three phase loads.
UNIT IV
7. Prove that the ripple factor for the full wave rectifier circuit is 0.48.
Page 2 of 3
What are the advantages and disadvantages of a full wave rectifier circuit?
8. Explain the operation of a zener diode as a voltage regulator with its connection diagram and
characteristic curve.
Compare a full wave bridge rectifies with a full wave rectifies with two diodes (with centre tapped
transformer). Define PIV of the rectifier.
UNIT V
9. Explain the need for biasing the transistor.
Explain the operation of a npn CE amplifier. Draw its input and output characteristics.
10. Explain the working of a transistor as an amplifier. Mention the different configurations of
transistor amplifier.
Explain the operation of a common collector npn transistor. Mention any one application of it.