4.5 Characteristic of Artificial lighting

Question 1

A ________ is a device that generates light.

Answer 1

lamp

Question 2

Common misconception of a lamp and a _______ is that the light bulb is simply the glass portion of a lamp that encloses and protects the working parts of the light source, while the ________ itself is the source of light.

Answer 2

light bulb and lamp

Question 3

________ This kind of lamps provide light source by incandescence, which is the emission of light caused by heating the filament.

Answer 3

Incandescent Lamps

Question 4

This category can be divided into 2 more sub-category: low-pressure lamps, and high-intensity discharge (HID).

Answer 4

Gaseous Discharge Lamps

Question 5

This category can be divided into 2 more sub-category: ___________, and h__________.

Answer 5

low pressure lamps (LPL) and high intensity discharge (HID)

Question 6

A ________ is a complete lighting unit which consists of lamps, lamp sockets, any lenses, refractors, or louvers, any ballasts, and the housing.

Answer 6

luminaire

Question 7

________ is the measure of the perceived power of light expressed in lumens (lm).

Answer 7

luminous flux

Question 8

_______ SI unit of luminous intensity

Answer 8

Candela

Question 9

__________ is the ratio of the light output of a light source (a specific lamp) to the electrical energy consumed to produce the light source.

Answer 9

Luminous efficacy

Question 10

The ________ is a method of numerically comparing the color distribution of a light source to a reference lamp.

Answer 10

color rendering index

Question 11

A ______________ is a graphic presentation of the quantities of light emitted by a lamp by wavelength component.

Answer 11

a spectral power distribution curve