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