Delmar Unit 17 Inductance in AC circuit
inductance (L) - correct answer ✔property of a circuit that tends to oppose
any change of current
inductive reactance (X sub L) - correct answer ✔the current limiting property
of an inductor in an AC circuit
Quality (Q) - correct answer ✔of a component. can be calculated by
comparing the resistance to the reactance
reactance - correct answer ✔the opposition to current flow in an AC circuit
offered by pure inductance or pure capacitance
reactive power (VARs sub L) - correct answer ✔(wattless power) calculated
by multiplying reactive voltage by reactive current. can be produced by
inductive or conductive loads
What is another name for watts and what is it equal to? - correct answer
✔power, the product of the voltage and the current
When will zero voltage be induced? - correct answer ✔When current
reaches its peak value and the magnetic field starts expanding
When does the greatest rate of change occur between induced voltage and
the circuit current? - correct answer ✔when current passes from negative
through zero and begins to increase in the positive direction
, Current flowing through an inductor ______ applied voltage by _______. -
correct answer ✔lags, 90 degrees
Current flowing through an inductor _____ induced voltage by ______. -
correct answer ✔leads, 90 degrees
Schematic symbols for inductors shown without parallel lines represents
_____. - correct answer ✔air-cooled inductors
The condition that occurs in an AC circuit containing inductance. - correct
answer ✔current lags voltage
What is voltage that is produced in a conductor by magnetic lines of flux
cutting the conductor? - correct answer ✔induced voltage
Schematic symbols for inductors shown with 2 parallel lines represent _____?
- correct answer ✔iron-core inductors
If the amount of inductive reactance is known, what formula can be used to
determine the inductance of the coil? - correct answer ✔L= (XL)/2(Pi)f
What does an increase in frequency produce? - correct answer ✔higher
induced voltage or more inductive reactance
The speed of the cutting action is proportional to _____. - correct answer
✔frequency (Hz)
What determines the amount of inductance of the coil? - correct answer
✔Physical construction
inductance (L) - correct answer ✔property of a circuit that tends to oppose
any change of current
inductive reactance (X sub L) - correct answer ✔the current limiting property
of an inductor in an AC circuit
Quality (Q) - correct answer ✔of a component. can be calculated by
comparing the resistance to the reactance
reactance - correct answer ✔the opposition to current flow in an AC circuit
offered by pure inductance or pure capacitance
reactive power (VARs sub L) - correct answer ✔(wattless power) calculated
by multiplying reactive voltage by reactive current. can be produced by
inductive or conductive loads
What is another name for watts and what is it equal to? - correct answer
✔power, the product of the voltage and the current
When will zero voltage be induced? - correct answer ✔When current
reaches its peak value and the magnetic field starts expanding
When does the greatest rate of change occur between induced voltage and
the circuit current? - correct answer ✔when current passes from negative
through zero and begins to increase in the positive direction
, Current flowing through an inductor ______ applied voltage by _______. -
correct answer ✔lags, 90 degrees
Current flowing through an inductor _____ induced voltage by ______. -
correct answer ✔leads, 90 degrees
Schematic symbols for inductors shown without parallel lines represents
_____. - correct answer ✔air-cooled inductors
The condition that occurs in an AC circuit containing inductance. - correct
answer ✔current lags voltage
What is voltage that is produced in a conductor by magnetic lines of flux
cutting the conductor? - correct answer ✔induced voltage
Schematic symbols for inductors shown with 2 parallel lines represent _____?
- correct answer ✔iron-core inductors
If the amount of inductive reactance is known, what formula can be used to
determine the inductance of the coil? - correct answer ✔L= (XL)/2(Pi)f
What does an increase in frequency produce? - correct answer ✔higher
induced voltage or more inductive reactance
The speed of the cutting action is proportional to _____. - correct answer
✔frequency (Hz)
What determines the amount of inductance of the coil? - correct answer
✔Physical construction
