Download GTU BE/B.Tech 2019 Summer 1st Sem And 2nd Sem Old 110005 Elements Of Electrical Engineering Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 1st Sem And 2nd Sem Old 110005 Elements Of Electrical Engineering Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?I &II (OLD) EXAMINATION ? SUMMER-2019
Subject Code: 110005 Date: 20/06/2019

Subject Name: Elements Of Electrical Engineering

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt any five questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Compare similarities and dissimilarities between electrical and magnetic circuit. 07
(b) State and explain Kirchhoff?s current and voltage laws with diagram. 07

Q.2 (a) What is RMS value? Explain analytical method to obtain the RMS value. 07
(b) Explain two wattmeter methods for star connected load. 07

Q.3 (a) Derive the equation of charging current and voltage for capacitor charging
process.
07
(b) Explain the Hysteresis and Eddy current loss in magnetic materials with
questions.
07

Q.4 (a) Explain the various lighting schemes used in illumination. 07
(b) Explain various techniques for charging a Battery. Give the applications of
Lead Acid Battery.
07

Q.5 (a) Explain the wiring diagram of a tube light with choke and glow starter. 07
(b) State the different methods of earthing and explain any one of them. 07

Q.6 (a) Three identical coil having each having resistance of 10 ? and reactance of 10
? are connected in (i) star and (ii) delta. Where line voltage are 400 V. Find
the power for both case.
07
(b) A series RLC circuit having resistance of 8 ?, inductance of 80 mH and
capacitance of 100 F is connected across 150 V, 50 Hz supply. Calculate the
current, the power factor and the voltage drops in the coil and the capacitance.
07

Q.7 (a) What is capacitor? Derive the expression for the equivalent capacitance for
capacitors connected (i) in series (ii) in parallel.
07
(b) Explain the method of transforming a star network of resistances in to delta
network resistance.
07

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