Y2 - Sem1 - Unit 17 Inductance in AC Circuits

Inductors that have a Q of __________ or more are considered to be pure inductors.

10

The standard formula for inductive reactance is

2 pi f L

In a pure inductive circuit, the current and voltage will be at different polarities _____% of the time and at the same polarity _______% of the time.

50%, 50%

In a pure inductive circuit, the current lags the voltage by __________ degrees.

90

CEMF stands for

Counter-Electromotive Force

Inductance is symbolized by __________.

L

Quality is symbolized by ________.

Q

___________________ is the current limiting property of the inductor.

Reactance

VARS stands for

Volts Amperes Reactive

Inductive reactance is symbolized by _____________

X sub L

An induced voltage is always opposite in polarity to the ____________ voltage.

applied

Inductive reactance is proportional to the inductance of the ________ and the __________ of the line.

coil, frequency

Inductance is measured in ___________ and is symbolized by the letter __________.

henrys, L

Higher Q inductors are considered to be inductors of _________________.

higher quality

Inductive reactance is measured in _________________.

ohms

The amount of resistance compared with inductive reactance is called the _______________ of the coil.

quality

VARS are used to measure ________________ in an ____________ circuit.

reactive power, inductive

When magnetic lines of flux cut through a coil, a ___________ is induced in the coil

voltage

In a pure inductive circuit, no __________ or ____________ is produced.

watts, true power