Electronics Quiz 2

Voltage can be described as the pressure that causes current to flow.

• true

• false

True

The output side of a transformer is called the…

Secondary winding

a _____ cable has the best noise rejection and cancellation

balanced

What does a power supply do?

• Converts DC to AC

• Converts AC to DC

• Converts AC to DC

Converts AC to DC

A shorter, thicker wire will usually have more resistance than a thinner, longer wire.

• True

• False

False

The input side of a transformer is called the ________

Primary winding

What unit of measurement do we use for Current?

• Volts

• Amps

• Watts

Amps

In the US, the voltage between the hot and neutral terminal of an AC outlet should measure

120 Volts AC

A dynamic microphone works on the principle of electromagnetic induction.

• true

• false

true

In the US, if you measure the voltage between the hot and ground wires on an AC outlet, what should the voltage measure?

120Vac

What are the most important things to know about troubleshooting a problem with a piece of equipment?

• what the manual says

• how the equipment works

• where the cool youtube videos are

• what your cousin things might work

• what the manual says

• how the equipment works

A transformer converts AC voltage & current to another AC voltage and current.

• true

• false

true

A preamp has ______ voltage gain compared to the voltage gain in a power amp

a higher

What is the purpose of impedance matching?

• Maximizing power transfer

• Maximizing efficiency

• Maximizing headroom

• All of the above

• None of the above

All of the above

The formula used to determine the power output of a power amplifier is____

• R=E/I

• P= I x E

• I=E/R

• Rt= R/N

• E= I x R

P= I x E

If you needed to lower the resistance in a circuit you could:

• add another resistor in series

• change the MIDI channel

• add another resistor in a parallel branch

add another resistor in a parallel branch

Which is NOT a correct equation?

• E x I = P

• R = I / P

• E / R = I

• E = R x I

R = I / P

The total resistance (or AC impedance) of one 8 ohm and one 16 ohm speaker wired in series with each other would be

24ohms

The unit of measurement used for Current is

Amps