Download GTU BE/B.Tech 2018 Winter 8th Sem Old 180902 Electrical Power Utilization Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem Old 180902 Electrical Power Utilization Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 180902 Date: 15/11/2018

Subject Name: Electrical Power Utilization

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Discuss major factors to be considered while selecting an electric drive. 07
(b) Discuss various speed control methods of three phase induction motor in brief 07

Q.2 (a) Define electric braking and explain any two methods of it detail. 07
(b) Write technical note on ?Load equalization and flywheel?. 07
OR
(b) Compare group drive with individual drive. 07

Q.3 (a) What is tractive effort? Explain it with necessary mathematical equations. 07
(b) A train is required to run between two stations 1.6 km apart at an average speed
of 40 kmph. The run is to be made to a quadrilateral speed- time curve. If the
maximum speed is to be limited 64 kmph, acceleration to 2 kmphps and coasting
and breaking retardation to 0.16 kmphps and 3.2 kmphps respectively, determine
the duration of acceleration, coasting and braking period.
07
OR
Q.3 (a) Draw a diagram of A.C. Electric locomotive and explain function of each part of
it.
07
(b) Draw and explain speed time curve for train movement. Also define:1) Crest
speed 2) Average speed and 3) Schedule speed.
07

Q.4 (a) Explain following term (1) co-efficient of adhesion (2) schedule speed (3)
specific energy consumption.
07
(b) Explain Induction heating in brief. 07
OR
Q.4 (a) What is electroplating? Explain factors governing electroplating.Explain
applications of electroplating.
07
(b) Define welding and also explain Resistance electric welding. 07

Q.5 (a) State and explain laws of illumination. 07
(b) Explain different factors to be considered while designing lighting scheme. 07
OR

Q.5 (a) State and explain Faraday?s laws of electrolysis. Also define current efficiency
and energy efficiency.
07
(b) Write a technical short note on Arc welding. 07

*************
FirstRanker.com - FirstRanker's Choice