E12E09 Estimating Costing & Energy Auduting DEEE Question Paper Model : psgpolytech.ac.in
College : PSG Polytechnic College
Degree : DEEE (Diploma in Electrical & Electronic Engineering)
Semester : V
Subject : E12E09 Estimating Costing & Energy Auduting
Document Type : Model Question Paper
Website : psgpolytech.ac.in
Download Model/ Sample Question Papers :https://www.pdfquestion.in/uploads/psgpolytech.ac.in/6238-e12e09.pdf
PSG Estimating Costing & Auditing Question Paper
PSG POLYTECHNIC COLLEGE, COIMBATORE – 641 004
DIPLOMA ODD SEMESTER EXAMINATIONS – NOV 2014
Instructions
Related : PSG Polytechnic College E12502 Power Systems DEEE Question Paper Model : www.pdfquestion.in/6233.html
1. Group A and Group B questions should be answered in the Main Answer book.
2. Answer any TEN questions in Group A. Each question carries three marks.
3. Answer ALL questions either (a) subdivision or (b) subdivision in Group B. Each question carries 14 marks.
E12E09 Estimating Costing And Energy Auduting
MODEL QUESTION PAPER
Time : 3 Hours Max.Marks: 100
Group – A
Marks : 10 x 3 = 30
1. Draw a conventional symbol for :
(i) Exhaust fan (ii) Main-switch for lighting (iii) Main-switch for power
2. State the need of Distribution board.
3. Compare MCB-ELCB.
4. State the need of Ear thing.
5. What is meant by : i) Cut-out fuse ii) Aerial fuse
6. State the Wiring Rules confirming to an Industry
7. Compare plan and wiring Layout
8. Define Service connection
9. What is meant by clearance and state its need-
10. List-out some specification of a Transformer
11. State the guidelines and sequence to be followed for conducting Estimate.
12. What are the factors to be considered for designing Street Lighting scheme-
13. What is meant by Guarding-
14. What is meant by Tender-
15. Define Energy Auditing.
Group– B
Marks : 5 x 14 = 70
16. a) i] A 15HP Induction motor needs 50meters of wire length calculate the size of conductor for an industry having 3Ф, 400volts supply. (5)
ii] Discuss comparative statement with an example. (9)
(OR)
b)i] A hall having size 12m x 6m x 4m high is required to be electrified with 8-tube lights, 6-fan points and 6-plug points. Draw a plan and layout for the above, starting from the Main board. (7)
ii] List-out the materials required for an Over Head Service Connection. (7)
17.a) List-out the materials required for an underground service connection.
(OR)
b) Illustrate with a neat sketch any one type of Earthing.
18.a) Select a suitable transformer for the load condition Available voltage = 11KV Required voltage = 440/250V, Lighting load = 10KW Industrial load = 48KW at 0.8PF. Demand factor = 0.6 Diversity factor = 1.5.Assume any other data suitably.
(OR)
b) Discuss the IS specification for Earthing.
19.a) Estimate the quantity of materials required and their approximate cost for installing an Outdoor distribution transformer 11KV/440V for supplying power to an industry having a Connected load of 80KVA.
(OR)
b) A straight road of 350 meters is to be illuminated by an underground street lighting scheme. The width of the road is 10 meters. Estimate the total cost for executing the above work Including the labor charges.
20.a)Illustrate the different types of Energy Auditing.
(OR)
b) Discuss the following an applicable to energy efficient 1) Day lighting 2) Green Building
DC Machines & Transformers
Time : 3 Hours
Max.Marks : 100
Group – A Marks : 10 x 3 = 30
1. What is the use of commutator in DC machine-
2. Differentiate lap and wave winding
3. Draw the load characteristics of dc generator.
4. Define back EMF.
5. What is the need for using starters in DC motor-
6. List the applications of DC shunt motor.
7. Name the various losses occur in DC machine.
8. Write the condition to get maximum efficiency in DC machine.
9. What are the uses of conducting indirect method of testing in DC machine-
10. Brief the functioning of transformer.
11. Define all day efficiency of a transformer.
12. List the conditions to connect transformer in parallel.
13. Define step angle in stepper motor.
14. Mention the applications of DC servo motor.
15. What is hybrid stepper motor-
Group– B Marks : 5 x 14 = 70
16. a) i] Describe the construction of DC machine with neat diagram. (7)
ii] Derive the EMF equation of DC generator from its first principle. (7)
(OR)
b) i] Brief the types DC generator. (6)