A luminaire consists of which of the following components:
1. A lamp
2. A voltage controlling device
3. A ballast
4. A reflector or refractor
a) 1
b) 1,2
c) 1,2,3
d) 1,2,3,4
e) 2,3,4
Answer: D
A luminaire consists of which of the following components:
1. A lamp
2. A voltage controlling device
3. A ballast
4. A reflector or refractor
a) 1
b) 1,2
c) 1,2,3
d) 1,2,3,4
e) 2,3,4
Answer: D