( 00000EE405121901 Pages: 3

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh semester B.Tech examinations (S), September 2020

Course Code: EE405
Course Name: Electrical System Design

Max. Marks: 100 Duration: 3 Hours
(approved data hand book may be permitted inside the examination hall)

PARTA
Answer all questions, each carries 5 marks. Marks

1 Explain the significance of the Electricity Act 2003. (5)
2 How can connected load of an domestic installation be calculated as per NEC (5)

guidelines
3 Draw the single line diagram of a 25016۷۸, 1111۷/433۷ indoor substation and (5)

justify the component ratings.
4 Explain the pre-commissioning tests for cables. (5)
5 A lamp giving out 1200 Im in all directions is suspended 8 m above the (5)

working plane. Calculate the illumination at a point on the working plane 6 m

away from the foot of the lamp
6 What are the design considerations of a good lighting scheme (5)
7 Distinguish between standby power, continuous power, prime power related (5)

with standby generators

8 What are the different types of design for PV systems? Explain with the help of (5)
neat block diagram.
PART ‏تا‎
‎Answer any two full questions, each carries 10 marks.
9 ೫ Describe the scope of National Electric Code 2011 (5)

b) Describe the selection procedure of main distribution board in domestic (5)
installations
10 a) What are the safety aspects applicable to low and medium voltage installations (5)
in view of National Electric Code 2011
b) Discuss the necessity of pre-commissioning tests in an electrical installation. (5)

What the different pre-commissioning tests for the electrical installation?

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