NCQLP Lighting Certification - 20 Sample Questions and Answers Fully Solved
1. When evaluating daylighting systems in terms of glare, the MOST important illumination conditions to
be evaluated are those occurring
A. when cooling loads due to solar gains are greatest.
B. when direct sunlight would penetrate the
fenestration.
C. at 2-hour intervals from sunrise to solar noon.
D. at the solstices and the equinoxes. - Answers B. when direct sunlight would penetrate the
fenestration.
2. The term luminaire refers to a
A. lighting unit exclusively for roadway illumination.
B. lighting unit exclusively for interior illumination.
C. complete lighting unit without light source and
electrical components.
D. complete lighting unit including light source and
electrical components. - Answers D. complete lighting unit including light source and electrical
components.
3. Which of the following is the BEST definition of
illuminance?
A. luminous flux density incident on an object per unit area
B. flux density emitted from an object without regard for direction
C. flux density emitted from an object in a given direction
D. time rate of flow of light energy - Answers A. luminous flux density incident on an object per unit area
, 4. Which of the following is a CIE/IES luminaire distribution classification category?
A. semi-direct
B. concentrating
C. forward throw
D. wall wash - Answers B. concentrating
5. A hospital is experiencing EMI problems with its radiology equipment. The lighting system in this area
has been identified as a 2 x 4 lensed troffer. The interference can be attributed to the luminaire's
A. size.
B. proximity.
C. electrical characteristics.
D. spectral power distribution. - Answers C. electrical characteristics.
6. When evaluating an existing fluorescent lighting system
for potential LED upgrade, mean lumens to rated lumens is
A. ballast factor.
B. voltage drop.
C. lamp lumen depreciation.
D. luminaire dirt depreciation. - Answers C. lamp lumen depreciation.
7. A ray of incident light being reflected in one distinct
direction is representative of which of the following types of reflection?
A. spread
B. diffuse
C. specular
1. When evaluating daylighting systems in terms of glare, the MOST important illumination conditions to
be evaluated are those occurring
A. when cooling loads due to solar gains are greatest.
B. when direct sunlight would penetrate the
fenestration.
C. at 2-hour intervals from sunrise to solar noon.
D. at the solstices and the equinoxes. - Answers B. when direct sunlight would penetrate the
fenestration.
2. The term luminaire refers to a
A. lighting unit exclusively for roadway illumination.
B. lighting unit exclusively for interior illumination.
C. complete lighting unit without light source and
electrical components.
D. complete lighting unit including light source and
electrical components. - Answers D. complete lighting unit including light source and electrical
components.
3. Which of the following is the BEST definition of
illuminance?
A. luminous flux density incident on an object per unit area
B. flux density emitted from an object without regard for direction
C. flux density emitted from an object in a given direction
D. time rate of flow of light energy - Answers A. luminous flux density incident on an object per unit area
, 4. Which of the following is a CIE/IES luminaire distribution classification category?
A. semi-direct
B. concentrating
C. forward throw
D. wall wash - Answers B. concentrating
5. A hospital is experiencing EMI problems with its radiology equipment. The lighting system in this area
has been identified as a 2 x 4 lensed troffer. The interference can be attributed to the luminaire's
A. size.
B. proximity.
C. electrical characteristics.
D. spectral power distribution. - Answers C. electrical characteristics.
6. When evaluating an existing fluorescent lighting system
for potential LED upgrade, mean lumens to rated lumens is
A. ballast factor.
B. voltage drop.
C. lamp lumen depreciation.
D. luminaire dirt depreciation. - Answers C. lamp lumen depreciation.
7. A ray of incident light being reflected in one distinct
direction is representative of which of the following types of reflection?
A. spread
B. diffuse
C. specular
