1) A black body when heated to ____________ emits the maximum energy in the visible spectrum range.
a. 5000 ° C
b. 3250 ° C
c. 6250 ° C
d. 8000 ° C
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Answer
Explanation
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ANSWER: 6250 ° C
Explanation:
No explanation is available for this question!
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2) What will be the utilisation factor for an indirect lighting scheme?
a. 0.25 – 0.5
b. 0.5 – 0.75
c. 0.1 – 0.25
d. 0.75 – 0.99
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Answer
Explanation
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ANSWER: 0.1 – 0.25
Explanation:
No explanation is available for this question!
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3) Which method is used for the lighting calculations?
a. Watts per square meter method
b. Lumen or light flux method
c. Point to point method
d. All of these
e. None of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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4) What is the normal life of a fluorescent lamp?
a. 2000 hours
b. 3500 hours
c. 7500 hours
d. 10000 hours
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Answer
Explanation
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ANSWER: 7500 hours
Explanation:
No explanation is available for this question!
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5) How is the ballast resistance connected with the choke?
a. Parallel
b. Series
c. Can be connected in either way
d. Both (a) & (b)
e. None of these
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Answer
Explanation
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ANSWER: Series
Explanation:
No explanation is available for this question!
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6) Which lamp is used in the outdoor illumination of buildings and airport runway?
a. Halogen lamp
b. Gaseous discharge lamp
c. Sodium vapour lamp
d. All of these
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Answer
Explanation
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ANSWER: Halogen lamp
Explanation:
No explanation is available for this question!
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7) Beyond what temperature does the gas vaporise and blackens the lamp in a gas filled lamp?
a. 550 ° C
b. 2000 ° C
c. 1000 ° C
d. 3000 ° C
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Answer
Explanation
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ANSWER: 2000 ° C
Explanation:
No explanation is available for this question!
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8) Which among these is a type of batten wiring?
a. Using metal sheathed wiring
b. Using TRS or PVC wires
c. Both (A) and (B)
d. None of these
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Answer
Explanation
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ANSWER: Both (A) and (B)
Explanation:
No explanation is available for this question!
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9) What is the maximum distance between the two successive cleats?
a. 0.25 m
b. 0.6 m
c. 0.9m
d. 1.25 m
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Answer
Explanation
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ANSWER: 0.6 m
Explanation:
No explanation is available for this question!
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10) Which among these is a type of internal wiring?
a. Cleat wiring
b. Conduit wiring
c. CTS wiring
d. Both (a) & (b)
e. All of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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