AC quiz #7
False
A coil of wire mound on a magnetic material would be considered an air core inductor.
True
An average voltage or current will always be lower than the RMS value.
True
An induced voltage is always of the opposite polarity as the applied voltage.
True
Current and voltage in a pure resistive circuit are in phase with each other.
False
DC can be stepped up and down just as AC can
True
Electric motors contain inductance.
True
Frequency is measured in Hertz
False
If a since wave had a RMS of 100 volts, the peak value would be lower.
True
Inductance is measured in Henry's
True
Inductive reactance is counter voltage and is measured in ohms.
True
Inductors can produce extremely high voltages and currents when the current flowing through them is suddenly stopped.
False
Inductors oppose a change of voltage.
True
One complete sine wave form is called an cycle
True
Power factor is ratio of true power to apparent power.
False
The RMS value of voltage is read after AC voltage is changed into DC with rectifiers.
True
The RMS value of voltage will produce as much power as a like amount of pure DC voltage
FAlse
The current and voltage in a pure inductive circuit are in phase with each other.
True
The voltage leads the current in a pure inductive circuit
True
VARS is an abbreviation for volts-amps-reactive
True
Vectors are lines that indicate both magnitude and direction
True
When a conductor is cut by a magnetic field a voltage is induced into the conductor.