PAGE 149

What is a device used with a ballast to provide the starting voltage for a preheat fluorescent lamp?

• phosphor

• U-bent lamp

• starter

• T bulb

What is the temperature at which a blackbody emits light of a specified spectral distribution, used to specify the color of a light source?

• Wavelength in nanometers

• spectral distribution curve

• color temperature

• relative power in watts

What is a measure of the ability of an electric lamp to render color accurately when compared with a reference light source of similar color temperature?

• color rendering index

• fluorescence

• discharge lamp

• triphosphor

What is a curve plotting the radiant energy in each wavelength of a particular light source?

• high-output lamp

• spectral distribution curve

• instant-start lamp

• very-high-output lamp

What is a lamp in which light is produced by the discharge of electricity between electrodes in a gas-filled glass enclosure?

• discharge lamp

• preheat lamp

• compact fluorescent lamp

• rapid-start lamp