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Lighting Design > Safety Quiz > Flashcards

Safety Quiz Flashcards

1
Q

Connecting the lighting instruments to the dimmer board is known as _________________ / _______________.

A

hooking up / plugging in

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2
Q

Another short length of cable used to connect the instrument’s too-short original cable to the plug is a __________________.

A

jumper

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3
Q

A receptacle on the stage is also referred to as a _________ __________.

A

stage pocket

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4
Q

The place where cables end in a theater so they don’t just pop out of the floor is the _______ ________.

A

patch panel

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5
Q

What is “ghost loading?”

A

Adding a light that doesn’t matter and sticking it backstage.

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6
Q

The _______ is the most significant electrical system in the body.

A

heart

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7
Q

Electricity always follows the path of ________ ______________ to the ground.

A

least resistance

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8
Q

Contained systems that predictably allow us to know where the electricity is going are __________.

A

circuits

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9
Q

What is a “short circuit?”

A
  • when electricity goes from source to source without a load
  • has the ability to blow a system
  • too fast for system to handle w/out resistance from the load
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10
Q

A __________ __________ detects the speed of the electricity circuit.

A

circuit breaker

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11
Q

What are the two ways in which a circuit breaker detects the speed of an electricity circuit?

A
  • temperature
  • magnetic trip
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12
Q

Describe a “series” design for circuitry.

A

[source] —- [load]
| |
[load] —- [load]

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13
Q

If any one load drops out in a SERIES design…

A
  • open circuit
  • the whole electricity goes out
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14
Q

Describe a “parallel” design for circuitry.

A

|—————–|————|———–|
[source] – [load] — [load] — [load]
|—————–|————|———–|

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15
Q

If any one load drops out in a PARALLEL design…

A

electricity still continues for the other loads

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16
Q

When you increase resistance, the entire system…

A

dims down

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17
Q

Why was the integration of electronic dimmers revolutionary?

A
  • dimmer is in a remote location
  • heat and danger away from performers
  • still 1:1 relationship btwn. controls and dimmers
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18
Q

Connecting the dimmer to the correct light is known as _________.

A

patching

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19
Q

What is a hard patch?

A

physically connecting a component of the system

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20
Q

(Between hot, neutral and ground) - Which can hurt you no matter what?

A

HOT

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21
Q

(Between hot, neutral and ground) - Which can only hurt you when electricity is flowing through?

A

neutral

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22
Q

(Between hot, neutral and ground) -
The color GREEN typically indicates which?

A

ground

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23
Q

(Between hot, neutral and ground) -
The color WHITE typically indicates which?

A

neutral

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24
Q

(Between hot, neutral and ground) -
Any other colors BESIDES GREEN AND WHITE typically indicates which>

A

hot (red and black are the most common)

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25
Q

Ground _______ first and _______ last.

A

makes first, breaks last

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26
Q

A “2P and G” is a what?

A

2 pin and ground connector (like the outlet face :o)

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27
Q

How much electricity is available for you to use is the ___________.

A

voltage

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28
Q

What is the WVA?

A

watts = volts * amps

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29
Q

The way was classify the color of a light source is the __________ ____________.

A

Kelvin temperature

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30
Q

Name the three parts of a lightbulb and their functions.

A
  1. BASE
    (how to connects to the source)
  2. ENVELOPE
    (the clear container that contains gas)
  3. FILAMENT
    (the wire element inside the lamp)
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31
Q

Which part of the lightbulb should you NOT TOUCH?

A

the envelope

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32
Q

In colored lighting, subtractive mixing is…

A

when you start with white and then add colored gels to get the color you want.

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33
Q

In colored lighting, additive mixing is…

A

when you add lights to get what you want.

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34
Q

A silver terminal screw is usually (hot/neutral/ground).

A

neutral

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35
Q

A brass terminal screw is usually (hot/neutral/ground).

A

hot

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36
Q

This is the only type of light that can dim through a theater dimmer system.

A

incandescent

37
Q

For this type of light, when you run a current through, it glows.

A

incandescent

38
Q

For the type of light, when you send electricity in proximity, the material coating on the inside of the tube begins to glow.

A

fluorescent

39
Q

Glowing in nature is called…

A

bioluminescence.

40
Q

This type of light is made of 2 electrodes w/ metal housing, and the spark jumps the gap between two rods.

A

arc lights

41
Q

This type of light is when the gas itself responds to an electrical impulse.

A

gas discharge light

42
Q

True or False: an LED can only have one color.

A

true

43
Q

Where are LEDs dimmable?

A

in a household (not in a theater!)

44
Q

Computers don’t run dimmers. Computers remember _________.

A

numbers

45
Q

Is a board enabled to soft patch or hard patch?

A

soft patch (every place you plug in a light is already connected to a dimmer)

46
Q

What are wash systems / wash lights?

A

Lights that are NOT areas, scenic or specials. Examples are backlight and side light.

47
Q

What is the best angle of light for visibility?

A

at the object, right above the viewer’s head

48
Q

Describe the “most natural” light.

A

An isosceles right triangle in which the object and its shadow are the same height and the light, the hypotenuse, creates a 45 degree angle.

49
Q

The measure of the quantity of light where the object / space is being illuminated is the _____ _________.

A

foot candle

50
Q

The measure of the quantity of light being emitted is the ________.

A

lumens

51
Q

On a light plot, a line running horizontally through a space is a ______.

A

plane

52
Q

On a light plot, a line running vertically through a space is a ______.

A

zone

53
Q

A lamp is the same thing as a _________.

A

lightbulb

54
Q

What is the basic rule of reflection?

A

The angle of incidence will always match the angle of reflection.

55
Q

What are the three main reflectors?

A
  1. spherical
  2. parabolic
  3. ellipsoidal
56
Q

Describe the spherical reflector.

A
  • focal point at halfway point
  • beam of light is not reshaped
  • outputs double the light because it reflects against itself
57
Q

Describe the parabolic reflector.

A
  • focal point further back from halfway
  • reflected rays are all parallel to each other
  • used in large telescopes
58
Q

Describe the ellipsoidal reflector.

A
  • beams bounce on areas of the outside
59
Q

In graphics standards for ellipsoidals, a 6x12 is marked by:

A

[slash]

60
Q

In graphics standards for ellipsoidals, a 6x16 is marked by:

A

[X]

61
Q

In graphics standards for ellipsoidals, a 6x9 is marked by:

A

[ ]

62
Q

In graphics standards for ellipsoidals, a 6x22 is marked by:

A

[’ ‘]

63
Q

In graphics standards for ellipsoidals, a 6x6 is marked by:

A

[v]

64
Q

In graphics standards for ellipsoidals, 6x12 has an angle measure of:

A

26 degrees

65
Q

In graphics standards for ellipsoidals, 6x16 has an angle measure of:

A

19 degrees

66
Q

In graphics standards for ellipsoidals, 6x9 has an angle measure of:

A

36 degrees

67
Q

In graphics standards for ellipsoidals, 6x22 has an angle measure of:

A

10 degrees

68
Q

In graphics standards for ellipsoidals, 6x6 has an angle measure of:

A

50 degrees

69
Q

On a light plot, the center line looks like this.

A

_________ _ _________ _ __________ _

70
Q

On a light plot, the plaster line looks like this.

A

__ __ __ __ __ __ __ __ __ __ __ __ __ __

71
Q

Describe the light from and affordances of an ellipsoidal.

A
  • strong light
  • able to utilize gel overlays
  • use the shades to shape the light
  • use a gobo for shapes
72
Q

Describe the light from and the affordances of a fresnel.

A
  • circular light
  • soft
  • you can focus / widen the light
  • common in all of FTT
73
Q

Describe the light from and the affordances of a PAR.

A
  • oval-shaped light
  • fixed diameter of light
  • a little brighter than a fresnel because it is a simple-function light
74
Q

A “soft patch” refers to the connection between…

A

the channel and the dimmer

75
Q

A “hard patch” refers to the connection between…

A

the dimmer and the circuit

76
Q

A (soft/hard) patch occurs within the software of a computer.

A

soft

77
Q

A (soft/hard) patch occurs when you make a physical electrical connection.

A

hard

78
Q

What is the US standard for voltage?

A

120V

79
Q

The unit of measure for an electrical current is ________.

A

amps

80
Q

Electrical systems in the US are either…

A

three-phase or single-phase

81
Q

You should never work on a ______ circuit.

A

LIVE

82
Q

Electricity switches directions every wave in a (single-phase / three-phase) system.

A

single-phase

83
Q

Which system is used when electricity requirement is HIGH?

A

three-phase

84
Q

Which system is used when electricity requirement is LOW?

A

single-phase

85
Q

Small equipment can be run by (single-phase / three-phase) systems.

A

single-phase

86
Q

Large equipment can be run by (single-phase / three-phase) systems.

A

three-phase

87
Q

Watts measure the _________, while lumens measure the _________.

A

Watts measure the amount of power within a lightbulb.
Lumens measure the amount of light emitted from the lightbulb.

88
Q
A

Lighting Design (1 decks)

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