JNTU Kakinada B-Tech 4-1 ENERGY AUDIT CONSERVATION AND MANAGEMENT (Open Elective) R13 March 2018 Question Paper

IV B.Tech I Semester Supplementary Examinations, February/March – 2018
ENERGY AUDIT CONSERVATION AND MANAGEMENT (Open Elective)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) Explain the barriers in Energy Audit and how it can be overcome. [4]
b) Define the terms w.r.t Lighting (i)Luminous efficiency and (ii) Candela [4]
c) Explain the significance of Tong tester [4]
d) Discuss various types of Electric water heating system [3]
e) Explain the concept of present worth method [4]
f) List the different types of depreciation methods [3]

PART ?B (3×16 = 48 Marks)2. a) List and enumerate the Goals of Energy Audit and where they can be applied. [8]
b) Explain the different types of representations in Energy consumption. [8]

3. a) Explain in detail about Horizontal polar curve and Vertical polar curve [8]
b) The table II shows the energy costs of a company using coke, gas and electricity. This
company produces 20 x10
3
tonnes per annum. Calculate the Cost indices?
Table II ENERGY COSTS
Energy type Consumption Costs ($)Coke 2.5×10
3
tonnes 108.0 x10
3

Gas 22×10
3
therms 3.6×10
3
Electricity 3×10
9
Wh 22.5×10
3

TOTAL 134.1 x10
3

[8]

4. a) Explain the effects of non-linear loads and harmonics on power factor of a motor and
how they can be nullified.
[8]
b) Explain the principle of operation of Pyrometer with a neat sketch. [8]

5. a) List and explain the different types of Electric heating methods. [8]
b) Explain the different energy conservation methods required for domestic
buildings.
[8]

6. a) Explain the merits and demerits of Energy efficient motors [8]
b) What is time value of money and give its significance [8]

7.
Discuss the different methods of return on investment analysis for energy
projects with suitable example.
[16]

Code No: RT41024
Set No. 1
R13
1 of 1