Alternating Current (AC)

the conversion of AC to DC is accomplished with a _____

____ is the frequency at which the inductive reactance and capacitive reactance are the same (3-91)

inductance is measured in ___ (3-75)

power factor of a purely resistive circuit

This induced voltage is sometimes referred to as _____

time constant of inductor formula?

time required for one cycle of events to occur

the negative power equals the positive power when the current and voltage are

(3-76) the time required for the current to rise to 63.2 percent of its peak value is known as _____

where is mutual inductance used?

maximum value of voltage or current in either the positive or negative direction (3-70)

the strength of a magnetic field that surrounds a conductor is determined by the amount of ____

current _____ voltage in an inductance circuit

amount of voltage generated in a secondary coil of a transformer is ___ the voltage in the primary times the turn ratio

Frequency in a AC is express in ___ (3-70)

Circuits that contains all three are referred to as ___ (3-86)

although there is no flow across a _____ in a capacitor the conductive plates become charged

Product of the source voltage times the total current _____ (3-88)

_____ the actual AC power in a current when phase is taken into account (3-72)

a ___ separates the conductors in a condenser (3-80)

The flow of current in an AC circuit is opposed by _____ (3-86)

What is incorporated in a ACU? (4-24)

the formula for impedance in a series circuit reads ______

the ratio of true power to apparent power is called ______ (3-88)

Capacitors can be connected in series or in parallel

A ___ is a device that stores electrical energy in the electrostatic fields that exist between two conductors

Time Constant of Capacitors

__ filter out unwanted audio and radio frequency energy in AC circuits and _ the values of alternating current (3-78)

_____ store electrical energy in electrostatic fields that exist between two conductors

Voltage and current sine waves are not always in phase. The amount of shift between voltage and current is called the __

circuits containing only two of the three oppositions are referred to as ______ and resistive ____

voltage or current change from zero through positive peak back to zero through a negative peak and back to zero again

formula for reactance X_L

_____ acts as an opposition to the flow fo current

Capacitive Reactance formula?

formula for total inductance in a parallel circuit?

the formula for finding ____ in a series circuit is the same as finding ____ in a parallel circuit

An _____ traces the sine wave patterns of AC voltage and current

The frequency of AC, expressed in

inductive reactance _____ as the frequency increases FIG. 3-135 (3-91)

C = Q / E

A ____ is one in which current and voltage are in phase (Fig 3-91)

Transformers change the values of AC voltage and current by means of

one lead of the coil is in common with both the primary and secondary in a _____

The combined effect of resistance, capacitive reactance, and inductive reactance is called _____(3-86)

when current and voltage are in phase, the phase angle is ____. and power factor is ____

and AC voltmeter measuring the voltage indicates the ____

capacity is affected by what variables?

The combine effect of resistance, capacitance reactance, and inductance reactance is called ___ (3-86)

Apparent Power

as ____ frequency increases in an AC circuit, the more back voltage, therefore less ____

total capacity of capacitors in a parallel circuit is equal to the ___ (3-82)

inductive reactance formula? (3-87)

The conversion of alternating to direct current is accomplished with a ____ (3-91)

effective value is sometimes referred to as ____

what indicates the amount of current that is in phase with the voltage? (3-90)

Are there more turns in the primary or secondary coil in a step up transformer?

if either winding of transformer is open, ____ voltage flows out of the transfer to the load (3-146)

____ is the oppoisiton to the flow of alternating current (3-83)

For capacitors in paralell, the formula is

most aircraft use _____ alternating current

what is the opposition to current flow in an AC circuit? (3-86)

______ is current flow that continually changes its value and periodically reverses direction.

flow of current in a AC circuit is opposed by ____

One farad is the capacity to hold one ___ of electricity under a force of ____

the symbol for Inductance is ____

______ is the product of the source voltage times the total current.

X_L

__ says that voltage induced into the conductor is of such a polarity that it ___ the change that caused it. (3-74)

most capacitors are measured in ____ or ____ (3-80)

When the sine waves cross the zero line at the same point, the voltage and current are _____ (fig 3-91)

Inductive reactance is messured in (3-77)

voltage _____ , current in an capacitance circuit (3-86)

two ways of connecting three output winding of a alternator

one compelte sequence of voltage or current

formula for total inductance in a series circuit?

(3-86) Total Reactance =

difference between the positive / negative peak values is called ______ and is equivalent to twice a peak value

when there are more than two unlike capacitors in series, the formula is

hertz represents what

Rectifiers convert ____

Capacitors are either ______ (3-84)

alternations are ____(3-70) (Fig 3-88)

current _____ voltage in an capacitance circuit

formula for capacitive reactance

nonelectrolytic capacitors are

whenever volts are increased in a transformer, amperes must ______

number of tunes in the coil / the spacing between the turns / the number of laters of winding / wire size

electrolytic capacitors are ____

root means square is____ of peak value

a capacitors ability to store electrical charge is measured in ____

flux lines that cut across a conductor and generate voltage even though there is no electrical conniption between them?

capacitor's ability to store an electrical charge is measured in___ (3-80)

induction of voltage that acts in opposition to the flow of alternating current is ____ (3-75)

Power factor formula? (Figure 3-130)

fixed capacitors are divided into either _____ (3-84)

capacitive reactance formula?

How much energy a capacitor can store is affected by ___

the formula for impedance in a series circuit reads _____

Formula for true power? (3-73)

the combined effect of resistance, capacitance reactance and inductance reactance is called

The symbol for inductance is __ (3-75)

_____ is opposition to the flow of alternating current caused by capacitance in a circuit. (3-83)

multiple diffrent capacitors in series ? (3-82)

voltage _____ current in an inductance circuit