EET test 2
True
A VA rating is more relevant when judging the current delivery capacity for a given signal source
False
Inductive reactance decreases as frequency increases
Iron core
Do iron core inductors or air core inductors have the same inductance
12V
If an inductor, resistor, and switch are connected in series to a 12V battery, what is the magnitude of the inductors voltage at the instant that the switch is closed
Power factor decreasing
In a series RC circuit, as the phase angle between the applied voltage and the total current increases, this is the same as
False
Power factor values close to 0 denotes an RC circuit with mostly true power
False
The energy stored in an inductors electromagnetic field is produced by the resistance of the inductors winding
True
The phase angle of an RC circuit varies inversely with frequency
True
The phasor combination of VR and VC in an RC series circuit equals the source voltage
True
The phasor combination of XC and R is called Z
False
The total current in an RC circuit always lags the source voltage
True
The voltage leads the current in an inductive circuit
True
An inductor passes direct current and opposes alternating current
True
As the frequency applied to an RC circuit increases, the impedance decreases
2
How many time constants will it take to completely build a magnetic field around an inductor
Resistance connected in parallel
When inductors are connected in parallel, their total inductance acts like
False
The total inductance of two parallel inductors equals the sum of their inductance value
True
An RC circuit can be used as a filter to eliminate selected frequencies
The series resistor
An RC high pass filter take its output across
False
As the frequency applied to an RC circuit varies, both XC and resistance vary
186mH, parallel
Connecting a ____inductor in _____ with a 100mH inductor produces a 65mH inductance
5
How many time constants will it take to completely collapse an inductors magnetic field
Increases, Increases
If the frequency decreases , the phase angle____ and the impedance_____
Decreases, Decreases
If the frequency increases , the phase angle_____ and the impedance______
A)Decreases as the frequency increases B) Inversely proportional to frequency C)Inversely proportional to the capacitance D) All of these
In an RC circuit, the capacitive reactance is
Current, voltage
In an inductive circuit, the ____ lags the _____
Pass direct current
Inductors______
A) Reactive power B) Apparent power C) True power D)All of these
Power in an RC circuit can be measured as
True
The total current in an RC circuit always leads the source voltage
False
The voltage and current are in phase in an inductive circuit
A) Varying in the same manner B)Leading the voltage C) Similar in waveform D) All of these
When an AC voltage is supplied to an RC circuit, the AC's current and amplitude will be
Resistance connected in series
When inductors are connected in series, their total inductance acts like
IC leads IR
Which statement describes the relationship of IC and IR