Utilization Of Electrical Energy

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Q1:- Waste light factor for non planer pace 

1. 1
2. 2
3. 1.2
4. 1.6

ANSWER:- 4

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Q2:- Utilization factor for direct light

1. 0.4 to 0.6
2. 0.1 to 0.5
3. 0.1 to 0.2 
4. 0.1 to 0.6

ANSWER:- 1

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Q3:- Utilization factor for indirect light 

1. 0.4 to 0.2 
2. 0.1 to 0.5 
3. 0.3 to 0.4
4. 0.5 to 0.8 

ANSWER:- 2

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Q4:- Space height ratio in lamp should be 

1. 1 to 3 
2. 1 to 2 
3. 1 to 4 
4. none

ANSWER:- 2

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Q5:- Law of illumination are

1. inverse square law
2. lambert's square law
3. both 1 and 2 
4. none of the above

ANSWER:- 3

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