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NALMCO CERTIFIED APPRENTICE
LIGHTING TECHNICIAN (CALT) STUDY
GUIDE BRAND NEW OFFICIAL QUESTIONS
WITH ANSWERS.
Light output is measured in ...? a) Footcandles b) Lumens c) Watts d) Electrons - correct answer - 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 - correct answer - 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 - correct answer - 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 - correct answer - 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 lighting system's efficacy is measured in ...? a) Lumens/Watt b) Amps/Volt c) Lumens/kWh d) $/kWh - correct answer - a) Lumens/Watt 1 - 9 Which is NOT one of the most important questions we typically need to ask to be able to understand and compare one lamp to another? a) How long does the lamp last? b) How much light does it produce? c) How much electricity does it require? d) What is its noise rating? - correct answer - d) What is its noise rating? 1 - 10 ____ describes the gradual decline in a lamp's light output as it ages. a) Light efficacy
b) Lamp consolidation c) Lumen depreciation d) Hours per start degradation - correct answer - c) Lumen depreciation 1 - 11 A lamp with a very low color temperature is considered ...? a) Warm light source (reddish) b) Neutral light source (white) c) Cool light source (bluish) d) Energy-efficient - correct answer - a) Warm light source (reddish) 1 - 12 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 - correct answer - c) Show colors accurately
b) 20-25% c) 30-35% d) 50% - correct answer - 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 - correct answer - 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 - correct answer - c) Shock and vibration
Clear incandescent lamps are a ...? a) Point source b) Linear source - correct answer - 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 - correct answer - c) High energy efficiency compared to fluorescent 2 - 7 If we have an incandescent lamp with the designation 65BR30, what is its wattage? a) 30W b) 65W c) R class
b) Capsule lamp c) Double-ended linear lamp d) Reflectorized lamp - correct answer - d) Reflectorized lamp 2 - 11 Which of the following is NOT a halogen lamp base? a) Single-pin b) Bi-pin c) Double-contact d) Screw-in - correct answer - 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 - correct answer - 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 - correct answer - 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 - correct answer - c) Phosphor 3 - 3 Which of the following is not a fluorescent lamp type? a) Preheat b) Metal halide c) Rapid start
b) Continue to operate normally c) Light only dimly d) Experience severe end blackening - correct answer - b) Continue to operate normally 3 - 7 What is the diameter of a T8 lamp? a) 0.5 inches b) 5/8 inches c) 1 inch d) 1.5 inches - correct answer - c) 1 inch 3 - 8 An instant start F96T12 lamp is how many inches long? a) 9 b) 12 c) 96 d) 48 - correct answer - c) 96 3 - 9
In a lamp code, "T" means the lamp is ...? a) Circular b) Tall c) Tubular d) Tested by Underwriters Laboratories, Inc. (UL) - correct answer
- c) Tubular 3 - 10 Which of the following is NOT a fluorescent lamp base? a) Bi-pin b) Recessed double-contact c) Single-pin d) 8-pin - correct answer - d) 8-pin 3 - 11 Which of the following is NOT a fluorescent lamp shape? a) Circular b) Star-shaped c) Linear d) U-shaped - correct answer - b) Star-shaped
a) Fluorescent b) Metal halide c) Incandescent and halogen d) CFLs - correct answer - 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 - correct answer - 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 - correct answer - d) High pressure sodium
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 - correct answer - 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) None of the above - correct answer - b) A thermal protection device that shuts down the ballast if it overheats. 3 - 19 Electronic ballasts offer which benefit? a) Less flicker
What is the primary cause of shortened generator life in an induction luminaire? a) Occupancy sensors b) Frequency of starts c) Heat d) High kWh rates - correct answer - c) Heat 3 - 23 Typically, induction luminaires use what type of socket? a) Medium bi-pin b) Mogul c) Edison d) None - correct answer - d) None 3 - 24 Where might induction luminaries be appropriate? a) Tight spaces b) Hard-to-access locations c) Stadium lighting d) Accent lighting - correct answer - b) Hard-to-access locations
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 - correct answer - 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 - correct answer - c) Halogen 4 - 3 Which of the following is NOT a typical application for HID lamps? a) Offices b) Parking lots c) Factories
