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Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION, JULY 2017

BE101-03: INTRODUCTION TO ELECTRICAL ENGINEERING
Max. Marks: 100 Duration: 3 hrs
Instructions:

Make suitable assumptions and approximations if any data is missing.
Numerical accuracy may be rounded to two decimal places in the final values.
Write units in all numerical answers.

PART A
Answer ALL questions. Each question carries 4 marks.

The terminal i-v characteristics of a practical current source is given in Figure 1. Evaluate the
internal resistance parallel to the source. What is the value of resistance to be connected at the

output terminals if the output voltage is 4V?

i(A)

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Figure |: i-v characteristics of a current Figure 2: A de network
source

In Figure 2, use node voltage analysis to find the node voltage VA.

Write four differences between electric and magnetic circuits.

RMS value is “Root of the Mean of the Squares." Find the rms value of the stepped

waveform shown in Figure 3. (To save time, it is suggested to avoid integration).
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25, 50 75

Figure 3: A stepped waveform Figure 4: Resonance in a series RLC circuit

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