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Code : 9CS13

I Semester Diploma Examination, AprillUlay

co m

Register Number 2013

CONCEPTS OF ELECTRICAL AND ELECTRONICS BNGG. Time:3Hoursl

(ii)

g.

: (i)

Section -lis compulsory. Answer any two full questions from each of the remaining sections.

Filt in the blanks :

(il

The unit of self inductance is

5

ik

1. (a)

-I

ib

SECTION

lo

Note

I Max. Marks : 100

w

(iD Ohm's law is true only at temperature. (iii) The average value of an altemating cu:rent is equal to fu" = -Bistable multivibrator has

(v)

Insulating material used in a capacitor is called

.p ed ia

(iv)

(b)

stable states.

Explain the block diagram of Op-Amp.

SECTION _

5

II

(a) State and explain Kirchoffs voltage law. O) Three resistances of 10 O, 20 Q and 20 {l arc connected in parallel. If a voltage

w

w

w

sf 5V is applied

J.

(i) (ii)

across this parallel combination, find

Total resistance Total current in the circuit.

(c)

State Ohm's law.

(a)

Define the following

(i) (ii)

6

6 3

:

Self induction

Mutual induction

[Turn over

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9CS13

O)

Three capacitors of 3 pf,

4

trtf,

6 pf are connected in parallel as shown in the

figure below. Calculate charge on each capacitor.

C1=3pf

250

(c)

g. co m

C3=6pf

V

State Coulomb's laws.

(i)

Impedance

(ii) Cunent State and explain Faraday's laws.

aw

(c)

ik

Find

V, 50 Hz.

(a)

Explain the working principle of a transformer with a neat figure.

6

(b)

Derive EMF equation of a transformer.

6

(c)

List any three uses of

3

(a)

What is a stepper motor ? List its application.

5

w

.p

a transformer.

(b)

What is

relay ? Explain the working principle of a relay.

6

(c)

Discuss the protection of electic and electronic circuits using fuses.

4

w 7.

6

III

a

w

6.

6

ed i

SECTION _

s.

of 0.1 pf in

ib

series. AC supply is of 230

lo

4. (a) Explain Inductive capacitive reactance. (b) An AC circuit consists of resistance of 200 C) and capacitance

brief note on colour coding of a resistor.

(a)

Write

(b)

List the applications of capacitors.

I

(c)

List the different types of cables and mention their applications.

4

a

6

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9CS13

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8

- tV

(a)

8

o)

4

(c)

m

(a)

what are conductors, insulators and semi - conductors 1:Give one exarnple for each.

10. (a)

Explain the V: I characteristics of aZener diode. Explain inhinsic and entrinsic semi

-

conductors.

5

4

Explain with abrock diagram the working of an on.line Ups.

List the merits of SMpS.

6 6 3

w

w

w

.p

ed

ia

w

ik

(c)

6

ib lo g

(b) (c)

.co

e.

3

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## Concepts of Electrical & Electronics Engg May 2013 (2009 Scheme ...

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