Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech EE (Electrical Engineering) 2020 March 7th and 8th Sem Energy Auditing And Management Previous Question Paper
Roll No. Total No. of Pages :03
Total No. of Questions : 09
B.Tech.(EE)(2012 Onwards E-II) (Sem.?7,8)
ENERGY AUDITING AND MANAGEMENT
Subject Code : BTEE-804B
M.Code : 71937
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a. Differentiate between primary and secondary energy with the help of suitable
example.
b. Briefly explain the differences between preliminary and detailed energy audit.
c. What is the greenhouse effect? List and describe the various impacts of global
warming?
d. What is the role of Energy Service Companies (ESCOs) ?
e. How energy is related to the growth of a country? Justify your answer with suitable
data.
f. The illuminance is 17 lm/m
2
from a lamp at a distance of 2 meter. What will be the
illuminance at a distance of 1.5 meter?
g. What is ?Simple Payback Period? technique?
h. A municipal corporation has 30000 numbers of 250 watts HPMV lamps. The annual
operating hours of these lamps are 3600 hours. Calculate the annual energy
consumption and annual cost if tariff is 4.75 Rs./kWh.
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1 | M-71937 (S2)-923
Roll No. Total No. of Pages :03
Total No. of Questions : 09
B.Tech.(EE)(2012 Onwards E-II) (Sem.?7,8)
ENERGY AUDITING AND MANAGEMENT
Subject Code : BTEE-804B
M.Code : 71937
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a. Differentiate between primary and secondary energy with the help of suitable
example.
b. Briefly explain the differences between preliminary and detailed energy audit.
c. What is the greenhouse effect? List and describe the various impacts of global
warming?
d. What is the role of Energy Service Companies (ESCOs) ?
e. How energy is related to the growth of a country? Justify your answer with suitable
data.
f. The illuminance is 17 lm/m
2
from a lamp at a distance of 2 meter. What will be the
illuminance at a distance of 1.5 meter?
g. What is ?Simple Payback Period? technique?
h. A municipal corporation has 30000 numbers of 250 watts HPMV lamps. The annual
operating hours of these lamps are 3600 hours. Calculate the annual energy
consumption and annual cost if tariff is 4.75 Rs./kWh.
2 | M-71937 (S2)-923
i. Name five parameters which psychometric chart provides to an air conditioning
engineer.
j. The cost of replacement of inefficient compressor with an energy efficient
compressor in a plant was Rs.5 lakhs. The net annual cash flow is Rs.1.25 lakh.
Calculate the return in percentage on investment.
SECTION-B
2. List five energy saving measures in lighting system. Define the term Lux, CRI, luminous
efficacy.
3. What are the different components of Material and Energy Balance of a process or unit?
A sample of coal from the mine is found to contain 67.2% carbon and 22.3% ash. The
refuse obtained at the end of combustion is analyzed to contain 7.1 % carbon and the rest
is ash. Compute the % of the original carbon unburnt in the refuse.
4. Explain different steps to perform detailed energy audit in an industry.
5. Explain these following terms with examples :
a. Block rate tariff
b. Two-part tariff.
c. Power factor tariff.
d. Three-part tariff.
6. Discuss the disadvantages of a low power factor. Explain the causes of low power factor
of the supply system.
SECTION-C
7. a. What are the different losses in electrical motors? What are the different causes of
energy losses in Induction motors in any industry?
b. What is air compressor system? Explain working of any one air compressor.
8. Define one ?Ton of Refrigeration (TR)?. Explain the principle of ?vapour compression
refrigeration? system with a neat sketch.
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1 | M-71937 (S2)-923
Roll No. Total No. of Pages :03
Total No. of Questions : 09
B.Tech.(EE)(2012 Onwards E-II) (Sem.?7,8)
ENERGY AUDITING AND MANAGEMENT
Subject Code : BTEE-804B
M.Code : 71937
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a. Differentiate between primary and secondary energy with the help of suitable
example.
b. Briefly explain the differences between preliminary and detailed energy audit.
c. What is the greenhouse effect? List and describe the various impacts of global
warming?
d. What is the role of Energy Service Companies (ESCOs) ?
e. How energy is related to the growth of a country? Justify your answer with suitable
data.
f. The illuminance is 17 lm/m
2
from a lamp at a distance of 2 meter. What will be the
illuminance at a distance of 1.5 meter?
g. What is ?Simple Payback Period? technique?
h. A municipal corporation has 30000 numbers of 250 watts HPMV lamps. The annual
operating hours of these lamps are 3600 hours. Calculate the annual energy
consumption and annual cost if tariff is 4.75 Rs./kWh.
2 | M-71937 (S2)-923
i. Name five parameters which psychometric chart provides to an air conditioning
engineer.
j. The cost of replacement of inefficient compressor with an energy efficient
compressor in a plant was Rs.5 lakhs. The net annual cash flow is Rs.1.25 lakh.
Calculate the return in percentage on investment.
SECTION-B
2. List five energy saving measures in lighting system. Define the term Lux, CRI, luminous
efficacy.
3. What are the different components of Material and Energy Balance of a process or unit?
A sample of coal from the mine is found to contain 67.2% carbon and 22.3% ash. The
refuse obtained at the end of combustion is analyzed to contain 7.1 % carbon and the rest
is ash. Compute the % of the original carbon unburnt in the refuse.
4. Explain different steps to perform detailed energy audit in an industry.
5. Explain these following terms with examples :
a. Block rate tariff
b. Two-part tariff.
c. Power factor tariff.
d. Three-part tariff.
6. Discuss the disadvantages of a low power factor. Explain the causes of low power factor
of the supply system.
SECTION-C
7. a. What are the different losses in electrical motors? What are the different causes of
energy losses in Induction motors in any industry?
b. What is air compressor system? Explain working of any one air compressor.
8. Define one ?Ton of Refrigeration (TR)?. Explain the principle of ?vapour compression
refrigeration? system with a neat sketch.
3 | M-71937 (S2)-923
9. Using the net present value analysis technique, evaluate the financial merits of two
proposed products shown in below table. The annual discount rate of 8% is considered
for each case.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
Project 1 Project 2
Capital cost (Rs.) 30000 30000
Year Net Annual Saving (Rs.) Net Annual Saving (Rs.)
1 +6000 +6600
2 +6000 +6600
3 +6000 +6300
4 +6000 +6300
5 +6000 +6000
6 +6000 +6000
7 +6000 +5700
8 +6000 +5700
9 +6000 +5400
10 +6000 +5400
Total net saving at the end of 10
th
+60000 +60000
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This post was last modified on 21 March 2020