Download GTU BE/B.Tech 2019 Summer 8th Sem New 2180910 Energy Conservation And Audit Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 8th Sem New 2180910 Energy Conservation And Audit Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2180910 Date:09/05/2019

Subject Name:Energy Conservation, And Audit

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

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS

Q.1 (a) Discuss pre-audit phase activities. 03
(b) Discuss advantages and disadvantages of simple payback analysis. 04
(c) What is LED lamp? Mention advantages and disadvantages of LED. 07

Q.2 (a) How to reduce transformer loss? 03
(b) List the advantages and disadvantages of synchronous motor VSD system. 04
(c) Explain the working principle of soft starters with its advantages and
application.
07
OR
(c) Discuss demand side management. 07
Q.3 (a) What are the advantages of good power factor? 03
(b) List the barrier and limitations of energy optimization projects. 04
(c) Explain the guidelines for writing energy audit report. 07
OR
Q.3 (a) Explain the effect of harmonics and improvement method. 03
(b) Explain the application of following instruments used for energy audit and
monitoring: Water flow meter, Leak detector, Temperature sensor, Speed
meter.
04
(c) Explain the conditions and advantages of parallel operation of transformers
and generators.
07
Q.4 (a) Write a short note on reheaters. 03
(b) Explain dearation and evaporation feed water treatment. 04
(c) What is an application of economizer? List out its advantages and design
aspects to improve the boiler efficiency.
07
OR
Q.4 (a) List factors affecting furnace performance. 03
(b) Describe the factors affecting the fuel economy in furnaces. 04
(c) Explain the working of Circulating Fluidized Bed Combustion Boilers
(CFBCB).
07
Q.5 (a) Explain the performance characteristics of pumps. 03
(b) Explain the performance of pumps in parallel and series operation. 04
(c) Describe the methods to improve performance of compressed air system. 07
OR

Q.5 (a) Enlist the applications of compressed air in industry. 03
(b) Enumerate the energy saving opportunities in cooling towers. 04
(c) What is thermal insulation? Write down its advantages and properties of
thermal insulating material.
07

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