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NALMCO Certified Apprentice Lighting Technician
(CALT) Study Guide | 100% Correct Answers | Verified
| Latest 2024 Version
Light output is measured in ...? a) Footcandles b) Lumens c) Watts d) Electrons - ✔✔b) Lumens 1 - 2 Rated lamp life is the time when ...? a) Lamps reach 20,000 hours of operation b) 1/2 of a large group of lamps are expected to have failed c) All lamps are expected to fail d) It's the best time to group relamp - ✔✔b) 1/2 of a large group of lamps are expected to have failed 1 - 3 The Color Rendering Index is a scale that describes how accurately colors look when struck by the light from a given lamp. How is the scale defined? a) 0-100, with 0 being worst and 100 being best b) 0-75, with 0 being worst and 75 being best c) 0-100, with 100 being worst and 0 being best d) 0-75, with 75 being worst and 0 being best - ✔✔a) 0-100, with 0 being worst and 100 being best 1 - 4 Which of the following is NOT a typical function of a lighting system? a) Ballast starts and operates the lamp
b) Lamp produces light c) Ballast records energy consumption on an LCD display d) Luminaire controls the direction and intensity of the light coming out of the lamp - ✔✔c) Ballast records energy consumption on an LCD display 1 - 5 Voltage is the "push" of electricity, which reaches resistance, and the resulting rate of flow of electric power down the line is called ...? a) Ballast starts and operates the lamp b) Lamp produces light c) Ballast records energy consumption on an LCD display d) Luminaire controls the direction and intensity of the light coming out of the lamp - ✔✔d) The current 1 - 6 Which of the following is NOT one of the major families of lighting? a) Incandescent/Halogen b) Electroluminescent c) High-intensity discharge d) Fluorescent - ✔✔b) Electroluminescent 1 - 7 The amount of electric power a lighting system draws is measured in ...? a) Watts b) Ohms c) Amps d) Volts - ✔✔a) Watts 1 - 8
A lamp's color rendering ability describes how well it can relatively ...? a) Prevent color shifting over time b) Raise color temperature over time c) Show colors accurately d) Produce light per unit of consumed energy - ✔✔c) Show colors accurately 1 - 13 If a lamp is rated at 20,000 hours at three hours per start, this is the lamp life if the lamp is ...? a) Turned off and on quickly every three hours b) Left on for three hours and off for 15-20 minutes c) On for three hours and off for three hours d) None of the above - ✔✔b) Left on for three hours and off for 15-20 minutes 2 - 1 A reflector fitted onto an incandescent lamp is used to ...? a) Increase color rendering ability b) Push light in a direction c) Make the lamp last longer d) Decrease heat produced by the lamp - ✔✔b) Push light in a direction 2 - 2 In incandescent lamp typically converts _____% of its electrical input into light output. a) 10-15% b) 20-25% c) 30-35% d) 50% - ✔✔a) 10-15% 2 - 3
Incandescent lamps are rated to provide only ___ hours of service life, so when we want an incandescent lamp but we want it to last longer, we can choose a long-life incandescent lamp, which provides ___ hours of service life. a) 2000 ; 4000 b) 1000 ; 4000 c) 750-1000 ; 1500- 3000 d) 800-2000 ; 2000- 4500 - ✔✔c) 750-1000 ; 1500- 3000 2 - 4 Rough service lamps are resistant to ...? a) Color shift b) Line voltage variations c) Shock and vibration d) Wide range of ambient temperatures - ✔✔c) Shock and vibration 2 - 5 Clear incandescent lamps are a ...? a) Point source b) Linear source - ✔✔a) Point source 2 - 6 Which of the following is NOT an advantage of incandescent lamps? a) No ballast required b) Lowest initial cost c) High energy efficiency compared to fluorescent d) Easy to dim - ✔✔c) High energy efficiency compared to fluorescent 2 - 7 If we have an incandescent lamp with the designation 65BR30, what is its wattage?
a) Single-pin b) Bi-pin c) Double-contact d) Screw-in - ✔✔a) Single-pin 2 - 12 If we see 75PAR30/HAL/SP10 as a lamp designation, which of the following statements do we know to be true about the lamp? a) 30W b) 10W c) 3 3/4 inches in diameter d) 9-3/8 inches in diameter - ✔✔c) 3 3/4 inches in diameter 3 - 1 The best way to describe an energy-efficient lamp is one that ...? a) Produces less light and saves energy b) Last longer c) Provides better color rendition d) Produces more light per unit of consumed energy - ✔✔d) Produces more light per unit of consumed energy 3 - 2 In a fluorescent lamp, UV energy produced inside the lamp impacts the inside of the glass bulb and is converted into visible light. What substance on the bulb converts UV energy into visible light? a) Fluorescence b) Halogen gas c) Phosphor d) Mercury - ✔✔c) Phosphor 3 - 3
Which of the following is not a fluorescent lamp type? a) Preheat b) Metal halide c) Rapid start d) Instant start - ✔✔b) Metal halide 3 - 4 What do rapid start lamps need to operate? a) A ballast b) A starter c) An ignitor d) A key - ✔✔a) A ballast 3 - 5 Which of the following is not an advantage of a fluorescent lamp? a) Flexibility b) High efficiency compared to incandescent c) Fast starting d) Lamps can last beyond 90,000 hours. - ✔✔d) Lamps can last beyond 90,000 hours. 3 - 6 On a parallel circuit, if one lamp goes out, the other lamp will ...? a) Fail to light b) Continue to operate normally c) Light only dimly d) Experience severe end blackening - ✔✔b) Continue to operate normally 3 - 7
Which of the following is NOT a fluorescent lamp shape? a) Circular b) Star-shaped c) Linear d) U-shaped - ✔✔b) Star-shaped 3 - 12 If somebody says, "That's a T5HO lamp," what would we know about its light output? a) Produces more light than a T b) Produces less light than a T c) Light output degrades rapidly compared to T d) It produces the same amount of light as a T8 lamp - ✔✔a) Produces more light than a T 3 - 13 Some compact fluorescent lamps have bi-pin or 4-pin bases, and others have screw-in bases. Which of the following do we know to be true about CFLs with screw-in bases? a) They have a warm color temperature b) They are shatter-proof c) They are preheat lamps d) They are self-ballasted - ✔✔d) They are self-ballasted 3 - 14 A ballast is required for all lighting systems except ...? a) Fluorescent b) Metal halide c) Incandescent and halogen d) CFLs - ✔✔c) Incandescent and halogen 3 - 15
Which of the following does a ballast do? a) Start the lamp b) Control the current c) (a) and (b) d) None of the above - ✔✔c) Both (a) Start the lamp and (b) Control the current 3 - 16 Which of the following is not a fluorescent ballast type? a) Preheat b) Rapid start c) Instant start d) High pressure sodium - ✔✔d) High pressure sodium 3 - 17 Trigger start ballasts, which operate like rapid start ballasts, were designed to operate ...? a) Rapid start lamps b) Instant start lamps c) Preheat lamps d) Slimline lamps - ✔✔c) Preheat lamps 3 - 18 A Class P ballasts is one which contains ...? a) A beeper to call you when there's a problem b) A thermal protection device that shuts down the ballast if it overheats c) A device that allows the ballast to start lamps at cold temperatures
d) High kWh rates - ✔✔c) Heat 3 - 23 Typically, induction luminaires use what type of socket? a) Medium bi-pin b) Mogul c) Edison d) None - ✔✔d) None 3 - 24 Where might induction luminaries be appropriate? a) Tight spaces b) Hard-to-access locations c) Stadium lighting d) Accent lighting - ✔✔b) Hard-to-access locations 4 - 1 What do HPS, all pulse-start MH lamps, low-wattage MH lamps need to start? a) A key b) Parallel circuit c) Starter or ignitor d) Two ballasts - ✔✔c) Starter or ignitor 4 - 2 Which of the following lamp types does not belong in the HID family? a) Metal halide b) High-pressure sodium c) Halogen
d) Mercury Vapor - ✔✔c) Halogen 4 - 3 Which of the following is NOT a typical application for HID lamps? a) Offices b) Parking lots c) Factories d) Street lights - ✔✔a) Offices 4 - 4 Which of the following HID lamps has the best color rendering ability? a) Standard HPS b) MV c) LPS d) MH - ✔✔d) MH 4 - 5 Which of the following HID lamps is the most efficient? a) HPS b) MV c) MH d) LPS - ✔✔d) LPS 4 - 6 If you light an object using an LPS lamp, what color will the object appear? a) Gray, black or yellow b) Reddish-yellow c) Bluish-white
d) Voltage ratings - ✔✔a) Color qualities 4 - 11 Due to their high light output and compact sizes, HID lamps are ideal for lighting ____ spaces. a) Small b) Restricted c) Large d) Office - ✔✔c) Large 4 - 12 If a pulse-start MH lamp experiences a momentary power interruption, when the power returns, it takes 3 - 4 ____ to re-strike and begin the warm-up process because the arc tube must ____ before the lamp can restart. a) Seconds ; heat sufficiently b) Minutes ; heat sufficiently c) Seconds; cool down d) Minutes ; cool down - ✔✔d) Minutes ; cool down 4 - 13 A BT56 lamp is ______________ in shape. a) Tubular b) Bulbous tubular c) Reflector d) Ellipsoidal - ✔✔b) Bulbous tubular 4 - 14 A BT56 lamp is _____________ in diameter. a) 56 inches b) 5.6 inches
c) 8 inches d) 7 inches - ✔✔d) 7 inches 5 - 1 The acronym LED stands for: a) Linear, Energy, Directional b) Lighting Efficiency Demands c) Light Emitting Diode d) Luminaire Efficacy Diagnostics - ✔✔c) Light Emitting Diode 5 - 2 What factors contribute to a LED lighting system's efficiency? Select all that apply: a) LED lighting systems contain no lead b) LED lighting is inherently directional resulting in less wasted light c) Conventional lighting systems cost less to install d) LED lighting systems are solid state electronic systems with highly efficient components - ✔✔b) LED lighting is inherently directional resulting in less wasted light. 5 - 3 As LED is dimmed, it is the only light source that: a) Increases in efficacy b) Changes color c) Becomes brighter d) Generates more heat - ✔✔a) Increases in efficacy 5 - 4
b) Dimming control system c) Temperate of the area being illuminated d) Luminaire optics - ✔✔d) Luminaire optics 5 - 8 Which of the following may be considered as an advantage of a LED lighting system when compared to a conventional HID lighting system? Select all that apply: a) Overall system wattage b) Initial System Install Cost c) Warm up and reset time d) Available color temperature(s) - ✔✔a) Overall system wattage and c) Warm up and reset time and d) Available color temperature(s) 5 - 9 Management of heat in LED luminaires is important because: a) LED luminaires generate more heat than conventional light sources b) Heat management is not an issue because LED luminaires do not generate heat c) Solid state and electronic components are susceptible to reduced life as a result of uncontrolled heat d) The consumer is becoming more aware of global warming - ✔✔c) Solid state and electronic components are susceptible to reduced life as a result of uncontrolled heat 5 - 10 White-light LED is produced by: a) Combining blue LED and a phosphor b) White LEDs c) White lensed luminaires
d) White-light LED is not possible - ✔✔a) Combining blue LED and a phosphor 6 - 1 Which of the following is a benefit of automatic lighting controls? a) Energy savings b) Flexibility c) Security d) All of the above - ✔✔d) All of the above 6 - 2 A standard toggle wall switch is an automatic lighting control. a) True b) False - ✔✔b) False 6 - 3 What is the function of a scheduling system? a) Turns the lights on and off based on occupancy b) Controls the lights based on a preset schedule c) Dims or switches the lights based on available daylight d) None of the above - ✔✔b) Controls the lights based on a preset schedule 6 - 4 What is the function of a daylight harvesting system? a) Turns the lights on and off based on occupancy b) Controls the lights based on a preset schedule c) Dims or switches the lights based on available daylight d) None of the above - ✔✔c) Dims or switches the lights based on available daylight
