GFA Lighting and Electric Practice Test

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• Down-projecting footage shot at 48 fps to 24 fps results in what effect when played back at standard speed?
• The 180-degree shutter angle is commonly used to achieve what?
• Which designation is a correct representation for the largest commonly used film industry conductor size?
• What is the amperage rating of the distro box referenced in the material?
• DMX 512 systems MUST utilize what type of connector
• Which practice is commonly associated with night interior lighting?
• If a fixture is assigned a specific address in DMX512, that address determines which:
• Which of the following should be avoided with day for night exteriors?
• Reflected light is defined as what?
• Which statement is true about shutter angle and exposure?
• Diffusion in front of a light guarantees soft light.
• Which of the following is not a disadvantage of lighting night exteriors?
• Which statement best describes the relationship between tungsten bulbs and heat output?
• If the power source is a generator, should you worry about amperage balance across the phase?
• In an electrical layout, which way do the male pins point?
• Which of the following is NOT an open-face lamp?
• What is a give-away that a day interior scene is artificially lit?
• Which property is not typically used to describe the color quality of a light source?
• In the described setup, which component primarily limits the total amperage capacity?
• Are "normal" fluorescent lamps full spectrum?
• What two types of light are almost always used for overhead soft light?
• Are XLR connectors the only data cable connectors that can be used?
• What diffusion accessory is commonly used in front of a light to soften the beam?
• In a very broad sense, what is the difference between alternating current (AC) and direct current (DC)?
• What is the main function of the fill light?
• Which rigging piece is used to hang a lamp from the grid?
• What accessory is placed on the front of a zip light to control the beam spread?
• TEST 7 refers to which concept related to lighting output?
• Why is a Junior Combo Stand called a Combo?
• What is the primary function of a ballast in gas discharge lighting?
• What are the most common lengths of Bates extensions and stingers?
• Do 120V and 220V snakebites have the same number of conductors in this context?
• Which scenario will result in slow motion?
• Referencing the proceeding scenario, how many volts do we have if the load is 1200 amps?
• \"Flicker free\" ballasts make use of what to ensure that there is no flicker?
• Which light helps separate the subject from the background more strongly when you want more contrast?
• Why can't you mate a 120 V, 100 A Bates plug to a 220 V, 100 A Bates plug?
• Should night exteriors be low key lighting?
• What produces the light from a fluorescent tube?
• Which option best describes lamp compatibility for a Fresnel?
• How many conductors are in a 50-foot piece of #2 banded conductor?
• Which property does not pertain to light?
• What is the voltage of a single 12-volt battery mentioned in the series?
• In a five-wire run of 4/0 ends ending in a 1200A distro box, what is the total amperage capacity?
• Which statement best reflects the need for a grip crew in motion picture lighting?
• The angle of incidence equals the angle of ____________________.
• According to the material, which lighting option has no flicker issue at higher quality?
• What is the biggest advantage of an ellipsoidal reflector spotlight?
• Gas discharge lamps require a ballast to operate. true or false?
• Generally, most DMX operators limit the number of fixtures on a data cable run to:
• Which characteristic makes HMI lamps favorable for film lighting?
• What is the default shutter angle of motion picture cameras?
• What term is used for the light that is found on location without alteration from us?
• Is there much contrast in high-key lighting?
• Which of the following is a characteristic of the filters that affect exposure in a chosen part of the frame without color shift?
• The strength of the electric current is measured in which unit?
• What is the main advantage of the HMI lamp?
• At 24 FPS with a shutter angle of 180 degrees, what is the effective exposure time per frame?
• What term is used for cycles in electrical terms?
• In an electrical layout, which orientation do the male pins have?
• Which fixture is defined by having an ellipsoidal reflector?
• Which configuration yields a sharper shadow due to the source being relatively smaller?
• Which of the following is not a measurement of the actual amount of light falling on the subject?
• Which of the following is not one of the three main lamp types listed in the material?
• Which of the following best describes the fusing in a fused disconnect switch?
• The data bits and bytes run at:
• Are HMIs considered a full spectrum light?
• Which has more green in it, sodium vapor or mercury vapor?
• Which is perhaps the easiest aspect to control?
• Which fixture uses a lens with engraved concentric circles?
• Which frame rate results in more image blur on film?
• When given a directive from the gaffer over the radio, what is the correct reply?
• Is there more than one type of PAR lens?
• Which statement is true about flicker causes?
• When considering filming at night, what describes the usage of low key lighting?
• Which color has the longest wavelength?
• What is the effect of tilting a net off perpendicular in relation to how the beam travels?
• Which lamp wattage has a higher paper amps value according to the data?
• Why is a Junior Combo Stand called a Junior?
• The closer the subject creating the shadow is to the surface receiving the shadow, the _____________ the resulting shadow will be.
• Which lighting style is defined by bright, even illumination with minimal shadows?
• Must motivated light appear to come from a practical fixture?
• If you have a 1000W lamp and a 5kW lamp, which draws more current on the same supply?
• Which statement about white balancing RAW footage is true?
• The sliding leg on light stands is called what?
• Which best describes diffuse reflection on a matte surface?
• What does PAR stand for?
• Must the key light always be a hard light?
• Which recording format delivers a flat, desaturated image?
• What is the relationship between the size of the light source and the softness of the light?
• Flicker-free ballast minimize flicker by what method?
• Do gas discharge lamps require a ballast?
• What is the proper radio acknowledgment when receiving a directive on set?
• In lighting, the inverse square law pertains to which aspect?
• Pertaining to light, what is the average reflectance value of the 'average' scene?
• What relationship is in play regarding slow & fast motion?
• To accurately reproduce day interior light, what needs to be recreated for each set?
• If we have a 480V generator, what can we expect?
• Pictorial lighting is primarily used to achieve what?
• When lighting a shot, should we always keep the 3-point lighting theory in mind?
• Is it possible to accurately recreate day exteriors on stage?
• Would you ever need to shoot night for day on stage?
• Generally, for night exteriors, what is a reason for putting a lamp up high from upstage?
• Which statement describes ambient exterior light in the context of interior daylight shooting?
• According to the material, which type of current is considered safer?
• The name of the graduated neutral density filter is:
• Which gas-based lighting source is associated with greener color output?
• Which concept describes light that seems to originate from a practical fixture within the set?
• Which two floor plate sizes are referenced?
• Are the XLR data cables daisy-chained from fixture to fixture?
• High-key lighting would be appropriate for ____________.
• If you tilt the net off of perpendicular, what happens to the light?
• Identify the three main types of lamps (bulbs).
• Referring to scrims for the lights, what is a 'home run'?
• If a 4x4 source is very close to the subject but is moved back 60 feet, what is required to maintain the same light quality?
• Of the bases for bulbs, which one does not belong?
• What attribute should be in play if the desired result from a source is that it be as hard as possible?
• The filter type that reduces exposure across part of the frame while preserving color is known as?
• Which of the following is not a main advantage of tungsten bulbs?
• Which statement best describes how night lighting conventions differ from day interiors?
• Referencing the above question, what is the correct answer expressed in paper amps?
• When relamping a fixture, in which direction does the nipple on the globe point?
• How many separate conductors are in a triple phase feed?
• The electrical interface on a DMX system is:
• In a triple-phase electrical grid, how many phases, or hots, are there?
• How many conductors does a 120V snakebite have?
• Can a ballast regulate dirty power for 60 Hz?
• What is the advantage of starting with 480V in this context?
• Is it possible to recreate day exteriors on stage?
• Can some tungsten units accept different wattages of globes?
• What is the paper amps value for a 5000-watt fresnel lamp?
• What are the two main factors that determine the hardness/softness of the source?
• What is not a reason that day interiors on stage may need a good deal of light?
• When you want to darken a portion of the frame without altering color, you would use which filter type?
• Which fixture utilizes a focusing barrel?
• What is a key factor to consider when recreating daylight interior lighting on a set?
• Which statement about light is false?
• Must you absolutely white balance the camera when shooting in RAW format?
• Which of the following is not part of the electromagnetic spectrum?
• If, on the red phase, there is a 5k fresnel and a 2k fresnel, how many paper amps are on the red phase?
• By double diffusing a light, what two things do you accomplish?
• Which filter would you choose to balance exposure across the frame without affecting hue saturation?
• Mixing color temperatures is acceptable under which condition?
• Placing a chimera on a light guarantees soft light.
• Which aperture setting results in less depth of field?
• What term describes the main lighting in a shot?
• What is the formula for determining the amperage or wattage load?
• Which three conductor sizes are said to end in camlock connectors?
• Which instrument reads the light falling on the subject?
• What is a method of achieving some contrast?
• Which device is used to step down 480V to 120V in this setup?
• What is the main function of the back light?
• What is the maximum number of fixtures to be placed on one data cable run?
• What is the primary purpose of DMX512 as described in the material?
• What term refers to the amount of energy expended?
• Which factor is described as perhaps the most important?
• Which aperture setting yields the greatest depth of field among the options: F2.8, F4.0, F5.6, F8.0?
• Incident light is defined as what?
• Which of the following is an attribute of feature film lighting?
• What accessory is placed on the front of a light to control the spread and provide a material diffusion panel in front?
• Referencing the above question, what is the correct answer expressed in paper amps?
• What are the two causes of \"flicker\"?
• Can a balloon light be sodium and/or mercury vapor?
• Which term describes a group of 512 DMX channels used for lighting control?
• Which of the following are considerations for shooting under inherent light?
• In lighting practice, which statement about F stop is accurate?
• Which statement about night exterior lighting is true?
• The heading \"Properties of Light\" relates to the study of which subject?
• A lunchbox rated at 100 A indicates what electrical capability?
• Which term describes the arrangement of dark tones against light tones?
• Light travels In a _________________ by virtue of _____________________.
• Which term describes light that appears completely realistic and believable within the scene?
• If you place a chimera on a light, do you have a soft light?
• Which pair of factors directly influences shadow hardness?
• What cables should be used to supply the 120 VAC service to the fixtures?
• The default frame rate of 24fps is widely used as the standard for which type of production?
• In the scenarios described, what is the voltage at the end of the line when the loads are 600A and 1200A?
• In a camera, is the shutter in front of or behind the gate/sensor?
• Which of the following is a gas discharge lamp type mentioned in the material?
• A balloon light is usually filled with:
• An ND .03 Gel reduces light by what percentage?
• Which statement best describes alternating current as opposed to direct current?
• Is a ring light a good choice for a dramatic film?
• What best describes pictorial lighting?
• How many primary colors of light are used in additive color mixing?
• What is the stand that we put the large lamps on called?
• Which factor is least relevant to lighting quality and design?
• Which factors influence apparent softness?
• How many actual amps does a 5k Fresnel pull?
• Why might a lamp be placed upstage high for night exteriors?
• Must you always use daylight balanced lamps (HMIs, LEDs) when lighting any day scene?
• Which of the following describes a possible advantage of nighttime exterior lighting that is not a disadvantage?
• How many cycles per second does AC power have in the U.S.?
• What color temperature describes warm white lighting?
• If ten 12-volt batteries are connected in series, what is the resulting voltage?
• What determines the Junior in a Junior Combo Stand?
• If an incident reading at the subject is f/5.6, is it necessary to set the lens aperture to f/5.6?
• Which factor is described as perhaps the most important in the material?
• What index measures how faithfully a light source renders colors?
• Which statement best defines reflected light?
• Which type of connector is commonly used for DMX data cables?
• If shutter angle 45 degrees, how much more light would you need for key exposure?
• What is a general convention of lighting for nights?
• Which base type does not belong among bulbs commonly described in the material?
• Which stand utilizes an electric pump to raise the lamp?
• Can a Fresnel be tungsten, HMI or LED?
• What do we use to knock the voltage down from 480V to 120V?
• Must inherent light come from artificial sources?
• Which statement best describes the fill light’s role in a scene?
• True or false - there is more than one type of PAR lens?
• Is it possible to operate multiple DMX universes within a single DMX network using standard DMX, commonly using hubs or repeaters?
• Which approach is typical when lighting day exteriors on stage?
• What metal are filaments in light bulbs made of?
• Are the 120vAC supply cables daisy-chained from fixture to fixture?
• Which floor plate types are indicated as present in the rigging system?
• True or false: you should never mix color temperatures for night lighting.
• What is the visual practice of having dark tones against light tones?
• Does a digital camera have a gate like a film camera?
• What is the most common approach to lighting reflective objects?
• The longer the cable run, the ______ voltage loss there is.
• Identify the gas discharge lamp.
• A balloon light is usually filled with air or helium; which gas option is listed as a possibility in that context?
• Will moving the light away from the subject make the light harder or softer?
• Which stand is associated with an electric pump mechanism to raise lamps?
• Is it true that 3-point lighting must always be used?
• What is the light production mechanism inside a fluorescent tube?
• What is the shape of the reflector in a Fresnel?
• Which statement best describes why day interiors on stage may require a good deal of light for walls?
• On the fixtures, can you use a 3-pin XLR connector on the input connection and use a 5-pin XLR connector on the output connector if one is supplied?
• What is not one of the things to look out for when lighting for night interiors?
• Most HMI header cables utilize what kind of connectors?
• Which lighting condition minimizes contrast in a scene?
• A DMX512 universe contains how many channels?
• Of the following, which one would produce the softest light?
• What best describes motivated light?
• Gas discharge lamps require what type of electrical power to minimize flicker?
• If you double the ISO setting from the default, by how many stops does exposure change?
• Which statement best describes the edge of a shadow near the object producing it?
• What would be considered a good, smart start to lighting day exteriors on stage?
• What best describes naturalistic light?
• Does an HMI lamp have a filament?
• DMX signaling is governed by which electrical standard?
• Which is a true benefit of using a larger light source?
• Which of the following is not a method of white balancing the camera?
• Why is a Fresnel that is full flood sharper than on full spot?
• Referring to the above scenario, what is the determining factor for total amperage capacity?
• One way of controlling the quantity of light reaching the subject is to move the light away from the subject. What is another result of this?
• Should you cross the established axis of the light?
• What does 'wasting' the light mean?
• In voltage loss, using a thicker cable results in what effect on voltage loss?
• The shape of the reflector in a LEKO is:
• Another convention of night lighting would be:
• Which statement about the speed of light is true?
• In a fused disconnect switch, is the neutral or ground fused?
• How many \"pulses\" of current are there in each AC cycle?
• What is the correct sequence in hooking up the camlock connectors?
• Can more than one universe be employed in a DMX system?
• Which statement about 120V AC supply cables in DMX setups is true?
• If you want to capture a flat image for color grading, which recording format should you choose?
• In a scenario where you want to darken only a portion of the frame while maintaining the scene's color, which tool would you use?
• In DMX512, what does the address specify?
• Do some ballast require 220 volts?
• What does DMX stand for?
• What does DC stand for in the described voltage description?
• How many conductors does a 220V snakebite have?
• What is the default frames per second setting?
• Which term best describes the total luminous output of a lighting fixture?
• An amprobe will read only one conductor at a time.
• How many usable data bytes are sent in a DMX 512 universe?
• The smaller the light source, the harder the light.
• Which of the following is not an advantage of shooting day interiors on stage?
• If you move a flag away from the source, the resulting shadow will be
• From what position should a reflected light reading be taken?
• How many conductors are in a 100A Bates extension?
• When taking an incident light reading, reducing light from f/4 to f/2.8 reduces the light by what percentage?
• What is the 3-digit code that identifies an instrument and/or its functions in a DMX 512 system?
• Must there always be a fill light?
• If we have a 5K Fresnel projecting through a 12x12 diffusion, what is considered the source?
• What accessory is used to control and adjust the flicker of a tungsten bulb?
• In properly setting a light stand, the struts should be placed how?
• If a light has a wavelength of about 700 nanometers, what color is perceived?
• What term do grips use for a Junior Lo-Boy stand?
• The concept of using a filter to reduce exposure in a certain part of the frame is typically called?
• DMX systems should not be used to control such things as pyrotechnics. Of the reasons not to that follow, which one does not belong?
• If you decrease the shutter angle, how much more light would you need for key exposure?
• What is the total load capacity of a lunchbox?
• The correct way to place a modifier in a beam of light is to place it perpendicular to the travel of the beam.
• Which statement about ballast use in gas discharge lamps is incorrect?
• The angle of incidence equals the angle of reflection describes which lighting law?
• Which brand-name fluorescent unit is described as the most popular and nearly generic?
• Which feature distinguishes a Junior Combo Stand from a standard stand?
• What is the default ASA setting of a professional digital motion picture camera?
• There is a shadow of a house stretching across the back yard. Why is the part of the shadow closest to the house sharper than the part further away?
• What is the control system used to control all aspects of the fixtures, especially the smart lights?
• In general, what is the best way to make the light softer?
• What does LED stand for?
• Which of the following should be adhered to regarding DMX data cabling?
• Are there DC voltage ballasts?
• Which stand is used to support the largest lamps?
• If we have a 5K Fresnel projecting through a 12x12 diffusion, which component acts as the source?
• Which statement is most accurate regarding DMX data cabling?
• Which conductor size is NOT listed as ending in camlock connectors?
• For purposes of this question, if the default ASA setting is 500 and you shoot a scene with the ASA setting at 1000, what is the result of the image recorded?
• Do HMIs ever incorporate a filament?
• What are the filters called that will take down the exposure in a selected part of the frame and will not affect color?
• The main function of the key light is to
• In night exteriors, what arrangement helps cover large areas with an even exposure?
• Which will produce the hardest light?
• If you shoot 48 fps and project it at 24 fps, what will the result be?
• Which practice is commonly used to facilitate scrims when lighting from a high position?
• Which surface scatters reflected light the most?
• In planning night exterior lighting, which statement is true about the use of low key lighting?
• Can a PAR fixture be either tungsten, HMI or LED?
• Is the ground circuit part of the electrical system that delivers voltage to the load?
• Which lighting setting produces a sharper shadow, full spot or full flood?
• What do the grips call a Junior Lo-Boy?
• What color is the ground conductor?
• What best describes a 'zip' light?
• When shooting for slow motion - high speed - you need more light
• What are the two sizes of Bates connectors used in the film industry?
• The described scenario yields 120 volts DC. What is the unit of this voltage?
• In a triple phase system, metering from the neutral to a phase, how many volts should there be?
• Which lamp type requires clean power?
• Which metal is used for filaments in light bulbs?
• Which practice helps reduce the intensity of light while maintaining softness?
• For a 1000W lamp, the paper amps rating is higher than the actual amps.
• An incident light reading at the subject is an f/5.6. must you set the lens' aperture at 5.6?
• Technically, how long can you run a DMX signal?
• A common effect of double diffusion is to soften the light. What is another effect mentioned?
• Which statement describes how light interacts with surfaces?
• Can a Fresnel light be an LED?
• Moving the light away from the subject to control quantity affects which of the following?
• Which connector family is commonly used with HMI header cables?
• Is there much contrast in low-key lighting?
• Which fixture uses a spherical reflector?
• Which frame rate would typically be used to shoot footage intended to be viewed at 24 fps to create slow motion?
• What fluorescent unit is the most popular and whose name is almost generic?
• What is the standard voltage used in the United States?
• Can the exposure of certain areas of the shot include both incident and reflective light exposures?
• What is the effect of starting at 480V on the amperage capacity of the supply cable before the transformer?
• If you place a 4x4 diffusion in front of a light, does that make it a soft light?
• Which of the following correctly describes the number of channels in a DMX-512 universe?
• Which of the following is not a disadvantage of shooting day interiors at practical locations?
• Which type of meter reads the amount of light reflected off of the subject back to the lens?
• How many cycles per second does AC shore power in the US have?
• Which of the following is true?
• The instruction to coil the excess cable and place it under the stand is correct.
• What lighting concept is commonly used to create believable night interiors?
• Which word in PAR stands for Aluminized?
• If the light source is larger relative to the subject, the light tends to be
• In a triple phase system, metering across from neutral to ground, how many volts should there be?
• Which two terms are humorously cited as overhead soft-light sources?
• Does there always have to be a key light?
• Is there only one type of dimmer?
• Diffusion can soften light, but it does not guarantee a soft light in all setups.
• Is there a flicker issue with higher-end LEDs?
• Which pairing represents the two sizes of pins/stands?
• Which factors influence the sharpness of a shadow?
• How many actual amps does a 1000w lamp pull?
• Light travels in a straight line by virtue of what property?
• Which option correctly identifies a true statement regarding night exteriors?
• What is the biggest cable size we use in the film business?
• If the voltage is 120 V and the current is 10 A, what is the power in watts using the formula W = V x A?
• In an open key light scenario, what does the subject’s gaze indicate?
• If you shoot at 24 fps and project at 24 fps, the motion is at normal speed.
• how many "channels" are there in a DMX 512 universe?
• When lamps are 'underslung' from a condor bucket, which of the following is not a reason this is done?
• A home run scrim arrangement involves how many doubles?
• In a triple-phase feed, including hot conductors, a neutral, and a grounding conductor, how many conductors are there in total?
• If a light source is moved from 1 meter to 60 feet away, what adjustment is needed to preserve the same lighting quality?
• Which pair are complementary colors in additive color mixing?
• What actually is \"flicker\"?
• Egg crate is used on the front of which light to control beam spread?
• What are the two sizes of pins/stands used?
• What is the main feature of an open key light?
• In a three-phase electrical system, what is the voltage between neutral and ground as described in practice?
• In the red phase example, the value 'paper amps' is 70. Which statement best describes this value?
• Should you ever mix color temperatures?
• Which statement best defines incident light reading?
• Which type of meter reads the amount of light falling on the subject?
• DMX 512 is
• What is the stated reason to run a reversed ground circuit?
• Which instrument reads the light reflected off the subject back to the lens?
• In a triple phase system, metering from one phase to another, how many volts should there be?
• If we read the voltage and we have 120V at the first split and 120V at the end of the line, how many volts do we have if the total load is 600 amps?
• When double diffusing a light with some space between the diffusion materials, what two effects are achieved?
• What is the main objective of bouncing a light?
• If you are shooting 60 frames per second, what is the exposure time?