Page 3

Question 1

How does AC and DC differ?

Answer 1

DC: flows one direction
Current that does not alternate polarity. Batteries create DC

AC: changes direction periodically

(add to this)

Question 2

Ohm

Answer 2

(Horseshoe/omega shape)

A unit of electrical resistance equal to the resistance through which 1 volt will force 1 amp

Question 3

What is a rectifier?

Answer 3

Converts AC to DC

Question 4

What is an inverter?

Answer 4

Device that converts DC into AC

Question 5

What does AC stand for?

Answer 5

Alternating current

Question 6

What does DC stand for?

Answer 6

Direct current

Question 7

What does HMI stand for?

Answer 7

Mercury (Hg) medium-arc iodide

Question 8

ERS

Answer 8

Ellipsoidal reflector spotlights

Leko

Question 9

What does Par stand for?

Answer 9

Parabolic aluminumized reflector

Question 10

What does it mean when a genny goes online?

Answer 10

The genny has begun to power the cable run

Question 11

Which of the following metals isn’t acceptable for ground?

Aluminum
Copper
Cast Iron
Steel

Answer 11

Cast iron = no dice

Ground: aluminum, copper, steel = acceptable

Question 12

There are 2 potentiometers located on a genny. What are they used for?

Answer 12

Voltage and Hertz regulators

Can adjust either - crank up voltage to make up for line loss, bring Hertz to within +/- .2 of where it needs to be (usually 60)

Question 13

Why is it important to keep a genny balanced?

Answer 13

Unbalanced loads keep the genny from running smoothly.

Puts a strain on the genny, wears it out. Can force it to suddenly shut down

Question 14

Why is a GFCI important and when would you use them?

Answer 14

GFCI protects circuits and against electrical shock. To be used near water

Question 15

What is the first thing you should do while doing a tie-in?

Answer 15

Make sure there are no loose pieces of metal on or around the box that could fall into the conductor

Then Contact a licensed electrician

Meter the box

strain relief

Get a spotter with a 2x4

Question 16

T-12, T-8, and T-5 refer to what kind of bulb?

Answer 16

Fluorescent bulbs

Number is 1/8s of inch in diameter

Question 17

What are the color temps of household and HMIs?

Answer 17

Household = 3000 kelvin
(according to the Box book)

HMI = 5600

Question 18

What is CTB? Why would you use it?

Answer 18

CTB: Color Temperature Blue gel

corrects a tungsten source to daylight