Karnataka SSLC Question Paper 2024 Elements of Electrical Engineering

Karnataka School Examination and Assessment Board

QUESTION
PAPERS
2024

CCE RF/RR (A)/666/041

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Question Paper Serial No.
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Total No. of Printed Pages : 8 ]

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Total No. of Questions : 8 ] FULL SYLLABUS
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Code No. : 51

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Subject : ELEMENTS OF ELECTRICAL ENGINEERING-IV
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(Regular Fresh / Regular Repeater)

03. 04. 2024
¶´¤MO⁄ : 03. 04. 2024 ] [ Date : 03. 04. 2024
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V⁄¬Œ⁄r @MO⁄V⁄◊⁄fl : 80 ] [ Max. Marks : 80
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General Instructions to the Candidate :
1. This question paper consists of 8 questions in all.
2. This question paper has been sealed by reverse jacket. You have to cut
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4. Figures in the right hand margin indicate maximum marks for the
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5. The maximum time to answer the paper is given at the top of the
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CCE RF/RR (A)/666/041 51

Note : Answer all the questions.

1. Four alternatives are given for each of the following

questions / incomplete statements. Select the most

appropriate alternative and write it in the answer book along

with its alphabet : 10 × 1 = 10

i) Form factor is the ratio of

(A) Average value / RMS value

(B) Maximum value / Average value

(C) RMS value / Average value

(D) Average value / Maximum value

ii) For a sine wave average value is

(A) 0·637 (B) 0·707

(C) 1·11 (D) 1·414

iii) The phenomenon of electromagnetic induction is

discovered by

(A) Ohm (B) Coulomb

(C) Faraday (D) Henry

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iv) Slip rings are made of

(A) Brass (B) Copper

(C) Silicon steel (D) Aluminium

v) In one-to-one ratio transformer

(A) I 2 > I1 (B) N1 < N 2

(C) N1 > N 2 (D) N1 = N 2

vi) The electric iron is an example for

(A) Heating effect (B) Magnetic effect

(C) Lighting effect (D) Chemical effect

vii) Which one is the non-renewable sources of energy ?

(A) Hydroelectric power (B) Thermal power

(C) Tidal power (D) Solar power

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viii) Among all which power plant uses coal as a fuel ?

(A) Geo-thermal power plant

(B) Thermal power plant

(C) Nuclear power plant

(D) Hydroelectric power plant

ix) An impurity which donates the electrons is

(A) Donor impurity

(B) Acceptor impurity

(C) Doping

(D) Both acceptor and donor impurities

x) A diode has

(A) one terminal (B) four terminals

(C) three terminals (D) two terminals

2. a) Explain A.C. 2

b) Explain the following terms : 3

i) RMS value

ii) Frequency

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c) Draw the sine wave and mark the following : 5

i) Negative half-cycle

ii) Amplitude

3. a) Explain A.C. motor. 2

b) Explain self-induced e.m.f. 3

c) Explain with neat diagram the phenomenon of

electromagnetic induction. 5

4. a) List any four applications of transistor. 2

b) Write a short note on auto transformer. 3

c) With a neat sketch explain the working principle of

transformer. 5

5. a) List the different sources of electrical energy. 2

b) Write a short note on thermal power plant. 3

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c) Draw a neat diagram of diesel power plant and label the

parts. 5

6. a) Explain doping. 2

b) Compare renewable and non-renewable sources of energy.

3

c) Draw the symbolic representation of N-P-N and P-N-P

transistor and label the terminals. 5

7. a) Draw the symbolic representation of diode and label the

terminals. 2

b) Explain three phase star connection. 3

c) Draw a neat diagram of electric iron and label the parts.

5

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8. a) Write any two advantages of I.C. 2

b) List any six parts of A.C. Generator. 3

c) Explain with neat sketch, working principle of three-phase

A.C. motor (induction motor). 5

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