AC Inductors/Generators

What is inductive reactance?

• A bad reaction to AC voltage

• A shocking experience with the 120VAC outlet in your house

• AC resistance to current change

• Sum of R and reactance

Tags

NGSS.HS-PS2-5

The armature of an AC generator is connected to

• DC source

• Bearings

• Slip rings

• Slip terminals

The instantaneous value of a sine wave can be calculated by the formula Vi = Vp *

• 1.414

• cos(angle)

• cot(angle) / Vrms

• sin( angle )

An eddy current will

• Aid current flow

• Neutral to current flow

• Oppose current flow

• Swim back and forth with changes in current

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What angular degree signifies peak voltage in a sine wave?

• 45

• 120

• 180

• 90

Q is

• A scientist from James Bond movies

• Ratio of inductive reactance to frequency

• A measure of quality

• Ration of reactance to internal resistance

An inductor passing 500Hz signals will ? to a 50Khz signal?

• Pass as is

• Slightly attenuate

• Appear as an open circuit

• Ignore the frequency change

Eddy currents can generate ?

• Wasted power

• A cooling effect

• A heating effect

• Magnetic fields

Tags

NGSS.HS-PS2-5

A peak voltage is ? of peak-to-peak

• 1/2

• Divide by 4

• 1/3

• Multiply times 0.707

Multiple signals can travel on a single conductor thanks to the ?

• Conductivity of copper

• Reverse magnetic fields

• Eddy currents

• Skin effect