B.Tech I Year I Semester (R20) Supplementary Examinations August-2023

BASIC ELECTRICAL ENGINEERING

(Common to CSE, CSE( AI & ML), CSE(Data Science) & AI)

Time: 3 Hours

Max. Marks: 70

Note: 1. Question paper consists of two parts i.e., Part A and Part B.

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2. Part A is compulsory, which carries 20 marks. Answer all questions of Part A.

3. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.

PART – A

(10 x 2 = 20 Marks)

1. 1. Define Ohm’s law and its limitations.
   2. Define temperature co-efficient of resistance.

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   3. State Faraday’s laws of electromagnetic induction.
   4. Define self and mutual inductance.
   5. Define RMS value.
   6. Define power factor.
   7. List different types of DC generators.

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   8. What is back EMF?
   9. List the applications of 3-phase induction motor.
   10. What are the different types of single-phase induction motors?

PART – B

(5 x 10 = 50 Marks)

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UNIT-I

2. State and explain Kirchhoff’s laws.

OR

3. Explain star to delta transformation.

UNIT-II

4. Derive an expression for energy stored in a magnetic field.

OR

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5. Explain dynamically induced EMF and statically induced EMF.

UNIT-III

6. Define and derive the average and RMS values of a sinusoidal waveform.

OR

7. Explain the AC through R-L series circuit.

UNIT-IV

8. Explain the construction and working principle of a DC generator with neat diagrams.

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OR

9. Explain the construction and working principle of a DC motor with neat diagrams.

UNIT-V

10. Explain the construction and working principle of a 3-phase induction motor with neat diagrams.

OR

11. Explain the construction and working principle of a single-phase induction motor with neat diagrams.

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