ATT Test 4
alternating current - Answer-An electrical current that changes both in magnitude and direction.
alternators and generators - Answer-AC is developed by sources called _____________.
alternator - Answer-A device which converts mechanical energy into an alternating electrical current.
generator - Answer-A rotating device for converting mechanical energy into an alternating electrical
energy.
frequency, period, and wavelength - Answer-Three basic sine wave characteristics:
two alterations - Answer-One cycle of AC always consists of ______________.
Hertz - Answer-A unit of measure for frequency.
frequency - Answer-_________ is the number of complete cycles occurring in one second.
period - Answer-The time it takes for a sine wave to complete one cycle.
wavelength - Answer-The actual distance between the beginning and end of one AC sine wave cycle.
, negative to positive - Answer-AC current flows from ______________.
induction - Answer-The magnetic or electric effect of one body on another without any physical contact
between them.
flux - Answer-A magnetic field is composed of magnetic lines of _______.
north, south - Answer-The direction of the flux lines is from the _______ Pole to the _______ Pole.
electromagnetic induction - Answer-The action of a conductor moving through a magnetic field causing
current flow.
RMS - Answer-The effective value of an AC voltage that causes the same amount of power dissipation as
a specific DC voltage.
phase - Answer-______ isthe relative position of AC quantities in time reference to each other.
voltage - Answer-RC transients occur when the _______ across a capacitor changes.
voltage leads current by 90 - Answer-What is the phase relationship between voltage and current
through an inductor?
opposes each other - Answer-The currents developed by an inductor and a capacitor are 180 degrees
apart in phase, their reactance:
currents are 180 apart - Answer-What is the phase relationship between current through a capacitor
and an inductor?
alternating current - Answer-An electrical current that changes both in magnitude and direction.
alternators and generators - Answer-AC is developed by sources called _____________.
alternator - Answer-A device which converts mechanical energy into an alternating electrical current.
generator - Answer-A rotating device for converting mechanical energy into an alternating electrical
energy.
frequency, period, and wavelength - Answer-Three basic sine wave characteristics:
two alterations - Answer-One cycle of AC always consists of ______________.
Hertz - Answer-A unit of measure for frequency.
frequency - Answer-_________ is the number of complete cycles occurring in one second.
period - Answer-The time it takes for a sine wave to complete one cycle.
wavelength - Answer-The actual distance between the beginning and end of one AC sine wave cycle.
, negative to positive - Answer-AC current flows from ______________.
induction - Answer-The magnetic or electric effect of one body on another without any physical contact
between them.
flux - Answer-A magnetic field is composed of magnetic lines of _______.
north, south - Answer-The direction of the flux lines is from the _______ Pole to the _______ Pole.
electromagnetic induction - Answer-The action of a conductor moving through a magnetic field causing
current flow.
RMS - Answer-The effective value of an AC voltage that causes the same amount of power dissipation as
a specific DC voltage.
phase - Answer-______ isthe relative position of AC quantities in time reference to each other.
voltage - Answer-RC transients occur when the _______ across a capacitor changes.
voltage leads current by 90 - Answer-What is the phase relationship between voltage and current
through an inductor?
opposes each other - Answer-The currents developed by an inductor and a capacitor are 180 degrees
apart in phase, their reactance:
currents are 180 apart - Answer-What is the phase relationship between current through a capacitor
and an inductor?
