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Reg No.: Name: ९ ae பம
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY `
SEVENTH SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2018
Course Code: EE405
Course Name: ELECTRICAL SYSTEM DESIGN

Max. Marks: 100 Duration: 3 Hours
PART A
Answer all questions, each carries 5 marks. Marks
1 Mention the Scope of Indian electricity act 2003 in brief. (5)
2 Specify a circuit breaker having both short circuit and overload protection. Explain its (5)
difference between MCB and ELCB.
3 What are the factors which decide the power distribution architecture in an electrical (5)

installation of an industry?
4 List out different types of transformer tests carried out before commissioning. (5)
5 A certain incandescent lamp, hangs from the ceiling of a room. The illuminance (5)
received on a small horizontal screen lying on a bench 2m vertically below the lamp
is 63.5 lux. Calculate illuminance at a point when the screen is moved horizontally a

distance of 1.5m along the bench.

6 Mention the various types of luminaries used for proper lighting scheme. (5)
7 What are the various energy conservation techniques imposed in buildings? (5)
8 Define the function of AMF panel in electrical supply system (5)
PART B
Answer any two full questions, each carries 10 marks.
9 a) What are the steps to be followed for safety precautions against electric shock? (4)
b) Describe electric service in buildings. (6)
10 a) What are different protective devices used in domestic installation? Explain each one (6)
in detail.
b) Describe the selection procedure for ELCB for domestic and industrial dwelling. (4)
11 Design an electrical schematic for the residential building with following details. (10)

Locate the positions of meter board, Main Switch board, DB, switch boards.

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