Semester : SEMESTER 7
Subject : Electrical system design
Year : 2020
Term : SEPTEMBER
Scheme : 2015 Full Time
Course Code : EE 405
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00000EE405121901
PART D
Answer any two full questions, each carries 10 marks.
A corridor is lighted by 4 lamps spaced 10 m apart and suspended at a height of
5 m above the centre line of the floor. If each lamp gives 200 candle-power in
all directions below the horizontal, find the illumination at the point on the
floor mid-way between the second and third lamps.
Explain with the help of block diagram the working of automatic main failure
system
What is the significance of LLF in lighting design? Explain its components.
Design the lighting scheme for an area measuring 160m x 80m using high
pressure sodium vapour lamps. The design requirements are illumination level
= 15 lux, mounting height of pole = 10m, coefficient of utilization = 0.7, light
loss factor = 0.75, with two luminaires per pole. Assume a ratio of spacing to
mounting height as 4.0
What are the design considerations of solar PV system for domestic
applications
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