STUPIDSID
RGPV First Year Engineering (Set A) (Semester 1)
Basic Electricals & Electronics Engg.
December 2015
Basic Electricals & Electronics Engg.
December 2015
1(a)
Define RMS and average value of an intern sinsusoidal
2 M
1(b)
Draw VI characteristics of ideal and practical woltage source
2 M
1(c)
Write the statement of superposition theorem.
3 M
Solve any one question from Q.1(d) &Q.1(e)
1(d)
Define Active, Reactive and apparent power and draw power triangle to establish a relation among them.
7 M
1(e)
For the circuit shown in the figure, determine the current theory 5Ω resistor using thevenins theorem.
7 M
2(a)
Define
i) MMF
ii) Magnetic field intensity
i) MMF
ii) Magnetic field intensity
2 M
2(b)
Write the Faraday's laws of electromagnetism.
2 M
2(c)
Write the basic principle of working of a single phase transformer.
3 M
Solve any one question from Q.2(d) &Q.2(e)
2(d)
Write a short note on the losses in a transformer
7 M
2(e)
Draw the phasor diagram of a single phase transformer working at lagging p.f.load.
7 M
3(a)
In a d.c. machines, write the basic function of following parts.
i) Commutator
ii) Brushes.
i) Commutator
ii) Brushes.
2 M
3(b)
What is meant by synchronous speed in synchronous machine?
2 M
3(c)
Write the definition and relation for slip speed and slip frequency.
3 M
Solve any one question from Q.3(d) &Q.3(e)
3(d)
Draw and explain the Torque-Slip characteristics of 3 phase Induction Motor.
7 M
3(e)
Classify self excited D.C. generators and draw their connection diagram neatly.
7 M
4(a)
What is EX-NOR gate? Explain with the help of its truth table.
2 M
4(b)
Draw the circuit diagram and truth table for half adder.
2 M
4(c)
State and explain DeMorgan's theorem.
3 M
Solve any one question from Q.4(d) &Q.4(e)
4(d)
Explain the operation of clocked RS Flip-flop with the help of logical diagram and truth table.
7 M
4(e)
Convert the following:
i) (1001010.0101)2=( )10
ii) (AEFF)16=( )10
iii) (374.37)10=( )16
iv) (36.125)8=( )10
v) (17173.71)8=( )16
vi) (25.625)10=( )2
vii) (110101.101)2=( )8
i) (1001010.0101)2=( )10
ii) (AEFF)16=( )10
iii) (374.37)10=( )16
iv) (36.125)8=( )10
v) (17173.71)8=( )16
vi) (25.625)10=( )2
vii) (110101.101)2=( )8
7 M
5(a)
What are intrinsic and extrinsic semiconductors?
2 M
5(b)
Explain how BJT can be used as a switch.
2 M
5(c)
Draw and explain the VI characteristics of semiconductor diode.
3 M
Solve any one question from Q.5(d) &Q.5(e)
5(d)
Explain the working of transistor in C.E mode and draw input and output characteristics of it.
7 M
5(e)
Describe the similarities and dissimilarities in the operation of PNP and NPN Transistors.
7 M
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