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NALCMO CERTIFIED APPRENTICE LIGHTING
TECHNICIAN (CALT) STUDYGUIDE EXAM
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
Which of the following is NOT a benefit of group relamping? a) Replacement labor savings b) Consistent light levels c) More luminaires can be installed d) Opportunity to replace lamps with energy-efficient lamps - ANSWERS-c) More luminaires can be installed
1- One factor which decreases a luminaire's light output is __. a) Dirt buildup in the luminaire b) Scheduled periodic cleaning c) Replacing the lamps
d) Closing the blinds on the windows - ANSWERS-a) Dirt buildup in the luminaire
1- A failed lamp is commonly called a ___. a) Lumen depreciation b) Payback c) Burnout d) Bi-pin lamp - ANSWERS-c) Burnout
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 - ANSWERS-c) Ballast records energy consumption on an LCD display
1- Voltage is the "push" of electricity, which reaches resistance, and the resulting rate of flow of electric power down the line is called ...?
a) Lumens/Watt b) Amps/Volt c) Lumens/kWh d) $/kWh - ANSWERS-a) Lumens/Watt
1- 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? - ANSWERS-d) What is its noise rating?
1- ____ 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 - ANSWERS-c) Lumen depreciation
1- 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 - ANSWERS-a) Warm light source (reddish)
Light output is measured in ...? a) Footcandles b) Lumens c) Watts d) Electrons - ANSWERS-b) Lumens
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 - ANSWERS-b) 1/2 of a large group of lamps are expected to have failed
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
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 - ANSWERS-b) Push light in a direction
2- In incandescent lamp typically converts _____% of its electrical input into light output. a) 10-15% b) 20-25% c) 30-35% d) 50% - ANSWERS-a) 10-15%
2- 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- d) 800-2000 ; 2000-4500 - ANSWERS-c) 750-1000 ; 1500-
Rough service lamps are resistant to ...? a) Color shift b) Line voltage variations c) Shock and vibration d) Wide range of ambient temperatures - ANSWERS-c) Shock and vibration
2- Clear incandescent lamps are a ...? a) Point source b) Linear source - ANSWERS-a) Point source
2- 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 - ANSWERS-c) High energy efficiency compared to fluorescent
2- If we have an incandescent lamp with the designation 65BR30, what is its wattage?
b) Capsule lamp c) Double-ended linear lamp d) Reflectorized lamp - ANSWERS-d) Reflectorized lamp
2- Which of the following is NOT a halogen lamp base? a) Single-pin b) Bi-pin c) Double-contact d) Screw-in - ANSWERS-a) Single-pin
2- 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 - ANSWERS-c) 3 3/4 inches in diameter
3- 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 - ANSWERS-d) Produces more light per unit of consumed energy
3- 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 - ANSWERS-c) Phosphor
3- Which of the following is not a fluorescent lamp type? a) Preheat b) Metal halide c) Rapid start d) Instant start - ANSWERS-b) Metal halide
3- What do rapid start lamps need to operate?
What is the diameter of a T8 lamp? a) 0.5 inches b) 5/8 inches c) 1 inch d) 1.5 inches - ANSWERS-c) 1 inch
3- An instant start F96T12 lamp is how many inches long? a) 9 b) 12 c) 96 d) 48 - ANSWERS-c) 96
3- In a lamp code, "T" means the lamp is ...? a) Circular b) Tall c) Tubular d) Tested by Underwriters Laboratories, Inc. (UL) - ANSWERS-c) Tubular
3- Which of the following is NOT a fluorescent lamp base?
a) Bi-pin b) Recessed double-contact c) Single-pin d) 8-pin - ANSWERS-d) 8-pin
3- Which of the following is NOT a fluorescent lamp shape? a) Circular b) Star-shaped c) Linear d) U-shaped - ANSWERS-b) Star-shaped
3- 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 - ANSWERS-a) Produces more light than a T
3-
Which of the following is not a fluorescent ballast type? a) Preheat b) Rapid start c) Instant start d) High pressure sodium - ANSWERS-d) High pressure sodium
3- 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 - ANSWERS-c) Preheat lamps
3- 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 - ANSWERS-b) A thermal protection device that shuts down the ballast if it overheats.
3- Electronic ballasts offer which benefit? a) Less flicker b) Greater efficiency c) Quieter operation d) All of the Above - ANSWERS-d) All of the above
3- If a lamp produces 3000 lumens and the ballast has a ballast factor of 0.90, what is the lamp's light output when operated by the ballast? a) 3000 b) 2700 c) 2500 d) 3236 - ANSWERS-b) 2700
3- The most common failure in an induction luminaire is ...? a) Generator / driver
c) Stadium lighting d) Accent lighting - ANSWERS-b) Hard-to-access locations
4- 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 - ANSWERS-c) Starter or ignitor
4- 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 - ANSWERS-c) Halogen
4- Which of the following is NOT a typical application for HID lamps? a) Offices b) Parking lots c) Factories
d) Street lights - ANSWERS-a) Offices
4- Which of the following HID lamps has the best color rendering ability? a) Standard HPS b) MV c) LPS d) MH - ANSWERS-d) MH
4- Which of the following HID lamps is the most efficient? a) HPS b) MV c) MH d) LPS - ANSWERS-d) LPS
4- 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) Bright white - ANSWERS-a) Gray, black or yellow
