Multiple Choice
Efficacy of a lamp means?
A) Lumens light output per watt of electrical input power to lamp
B) Efficiency at converting colour temperature into illuminance on the working plane
C) Percentage of lamp globe or tube surface area that emits light
D) Proportion of lamp light output directed toward the working plane
E) Luminous efficacy is total illuminance produced divided by lamp electrical input power including all control equipment consumption
Correct Answer:
Verified
Correct Answer:
Verified
Q1: When 900 lumen falls onto a 2.0
Q2: Which is correct about lighting?<br>A)1000 lumen/m<sup>2</sup> is
Q3: Light falling onto the surface in a
Q5: Illumination Intensity is which?<br>A)Lumens<br>B)Light level<br>C)Illuminance<br>D)Lumen/m<sup>2</sup><br>E)Lumen per watt
Q6: What is meant by lamp colour temperature?<br>A)Colour
Q7: Which of these correctly describe BZ classification?<br>A)BZ
Q8: What is an air-handling luminaire?<br>A)Sealed luminaire to
Q9: Which are correct descriptions of lighting system
Q10: Light system glare means?<br>A)Florescent indoor lighting systems