Final

Question 1

Electricity

Answer 1

the flow of electrons in a conductor

Question 2

Ampere

Answer 2

the basic unit of measurement of current flow

Question 3

voltage

Answer 3

another name for describing electromotive force

Question 4

direct current flows in only one direction t or f

Answer 4

true

Question 5

Hertz

Answer 5

the unit of measurement for frequency

Question 6

How many “hot” legs are in a three phase service?

Answer 6

3

Question 7

Should there be any voltage between the neutral and the ground?

Answer 7

No

Question 8

What 3 elements of electricity does every working circuit have?

Answer 8

Voltage
Current
Resistance

Question 9

Conductor

Answer 9

simply a material made of an element that freely transfers electrons.

Question 10

Insulator

Answer 10

a material that is made of an element that does not freely transfer electrons.

Question 11

In order of tie-in, label and what colors are the wires used in a 3-phase service disconnect?

Answer 11

Neutral- White
Ground- Green
X          - Black
Y          - Red
Z          - Blue

Question 12

Ohms law is a collection of formulas that state the relationships among Voltage, Resistance, and also Power. The relationship is such that 1 ohm will maintain 1 amp of current at 1 volt.

Answer 12

True

Question 13

When using a multi-meter, what setting do we use when measuring continuity of a cable?

Answer 13

Diode checker or Resistance

Question 14

P
_____ (Power Pie Chart)
I I E

Answer 14

P= I E
I= P/E
E= P/I

Question 15

V
_____
I I R

Answer 15

V= I R
I= V/R
R= V/I

Question 16

Edison

Answer 16

A standard wall outlet for production use

Question 17

What is the voltage in the US between each phase (hot leg) and ground?

Answer 17

120

Question 18

What is the voltage in the US between two phases of a 3-phase service?

Answer 18

208

Question 19

Audio is AC or DC?

Answer 19

Alternating Current

Question 20

What do we call the panel at a venue that provides power to a sound, lighting or video distro?

Answer 20

Disconnect

Question 21

With an amplifier in Mono-Bridged mode, into which channel is the signal plugged?

Answer 21

Left Channel

Question 22

Name two types of crossovers

Answer 22

Active

Passive

Question 23

In Bridge-Mono mode, twice the maximum power is available from the amplifier but this maximum power is achieved at double the impedance.

Answer 23

True

Question 24

Every 3 dB increase in output level requires ______ the power

Answer 24

2x

Question 25

Every time you double the distance away from a sound system, the dB drops by how much?

Answer 25

6dB

Question 26

Is there more power delivered to a 16 ohm load or a 4 ohm load?

Answer 26

4 ohm

Question 27

Drive lines are

Answer 27

generally on the return channels of a snake but (but could be a separate snake).

Question 28

Is it necessary for a concert audio system to produce 20Hz-20kHz?

Answer 28

No

Question 29

Power amplifiers serve to provide an output signal strong enough to drive the Line amplifier t or f

Answer 29

False

Question 30

A passive crossover is (before/after) the amplifier?

Answer 30

after

Question 31

Impedance does not change in relation to frequency

Answer 31

False

Question 32

What is a negative attribute to speakers connected in series?

Answer 32

If one goes out, they all go out.

Question 33

What is the name of the 2 pronged connector the plugs into the speaker outputs on the back of an amplifier?

Answer 33

Banana plug

Question 34

Should you ever operate an amplifier with a lower impedance load than specified for that amp?

Answer 34

No