Karnataka SSLC Question Paper 2023 Elements of Electrical Engineering

Karnataka Board
Question Paper

SSLC
Question Paper

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Question Paper Serial No.
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Total No. of Printed Pages : 8 ]
Jlflo Æ⁄√ÀÊ-V⁄◊⁄ —⁄MSÊ¿ : 8 ] CCE RF
Total No. of Questions : 8 ] NEW SYLLABUS

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100
Code No. : 51

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TEAR HERE TO OPEN THE QUESTION PAPER
Subject : ELEMENTS OF ELECTRICAL ENGINEERING-IV
( À¤≈¤ @∫⁄¥¿£% / Regular Fresh )

Æ⁄√ÀÊ-Æ⁄~√OÊæ⁄fl´⁄fl-}Ê¡Êæ⁄flƒfl BΔ« O⁄}⁄°¬“
¶´¤MO⁄ : 08. 04. 2023 ] [ Date : 08. 04. 2023
—⁄»⁄flæ⁄fl : ∑Ê◊⁄VÊX 10-30 ¬M•⁄ »⁄fl®¤¿‘⁄-1-45 ¡⁄»⁄¡ÊVÊ ] [ Time : 10-30 A.M. to 1-45 P.M.
Æ⁄¡⁄»⁄·¤»⁄© @MO⁄V⁄◊⁄fl : 80 ] [ Max. Marks : 80
General Instructions to the Candidate :
1. This Question Paper consists of 8 subjective and objective types
of questions.
2. This question paper has been sealed by reverse jacket. You have
to cut on the right side to open the paper at the time of
commencement of the examination. Check whether all the pages
of the question paper are intact.
3. Follow the instructions given against both the objective and
subjective types of questions.
4. Figures in the right hand margin indicate maximum marks.
5. The maximum time to answer the paper is given at the top of the
question paper. It includes 15 minutes for reading the question
Tear here

paper.

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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) For a sine wave form factor is

(A) 1·11 (B) 0·707

(C) 1·41 (D) 0·637.

ii) The time taken to complete one cycle is called

(A) Form factor (B) Average value

(C) Time period (D) Amplitude.

iii) The direction of induced emf in a generator is given by

(A) Fleming's left hand rule

(B) Lenz law

(C) Ohm's law

(D) Fleming's right hand rule.

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iv) Alternator is a/an

(A) A. C. motor (B) A. C. generator

(C) D. C. generator (D) D. C. motor.

v) The purpose of oil in a transformer tank is provided

(A) for cooling purpose (B) to reduce loss

(C) to increase heat (D) to decrease heat.

vi) Which one of the following uses coal as fuel ?

(A) Hydroelectric power plant

(B) Nuclear power plant

(C) Thermal power plant

(D) Diesel power plant.

vii) Which of the following is a non-renewable source of

energy ?

(A) Solar power (B) Hydroelectric power

(C) Nuclear power (D) Wind power.

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viii) The autotransformer works on the principle of

(A) Mutual induction

(B) Dynamically induced emf

(C) Statically induced emf

(D) Self induction.

ix) A pure semiconductor is called

(A) Intrinsic semiconductor

(B) Extrinsic semiconductor

(C) P-type semiconductor

(D) N-type semiconductor.

x) Arsenic is a

(A) Trivalent impurity

(B) Tetravalent impurity

(C) Quadrivalent impurity

(D) Pentavalent impurity.

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2. a) Explain power factor. 2

b) Explain the following terms : 3

i) Average value

ii) Amplitude.

c) Draw the neat diagram of sine wave and mark the

following : 5

i) Frequency

ii) Amplitude.

3. a) List the different types of Induced emf. 2

b) Write a short note on three-phase system. 3

c) Draw the neat diagram of A.C. generator and label the parts.

5

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4. a) List the types of semiconductor. 2

b) What is mutually induced emf ? 3

c) With neat sketch, explain the working of transformer. 5

5. a) What is diode ? 2

b) List any six parts of transformer. 3

c) Draw the neat diagram of electric fan and label the parts. 5

6. a) Write any two parts of wind power plant. 2

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

c) Draw the neat diagram of solar power plant and label the

parts. 5

7. a) What do you mean by doping ? 2

b) Write a short note on A.C. motor. 3

c) Explain Faraday's laws of electromagnetic induction. 5

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8. a) Draw the symbolic representation of diode and name the

terminal. 2

b) Mention the types of non-renewable source of electrical

energy. 3

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

transistors and name the terminals. 5

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