Moja lekcja

 0    31 fiche    patrykzymelka
Télécharger mP3 Imprimer jouer consultez
 
question réponse
the magnitude of the line voltage of a Y - connected generator is
commencer à apprendre
1.73
balanced load means
commencer à apprendre
z1=z2=z3
The algebraic sum of the currents entering and leaving a junction of the network is zero. This is a: citor in the s-domain is described by
commencer à apprendre
V(s)=(1/sC)*I(s)+v(0)/s
According to the definition, the electric field strength is described by formula
commencer à apprendre
F/Q
cut-off frequency of the RC filter is equal
commencer à apprendre
1/(2pi*R*C)
The energy stored by an inductor can be described as
commencer à apprendre
WL = 1/2 L Im^2
which property of the logarithm is true
commencer à apprendre
log10(a*b)=log10(a)+log10(b)
The quality factor (Q) of the resonant circuit is described by the general formula:
commencer à apprendre
q=req/ave
According to the maximum power transfer theorem, a maximum power will be delivered to a load when the load impedance is:
commencer à apprendre
A conjugate of the Thevinin impudance across the terminals
The time constant of the R-L circuit is described as:
commencer à apprendre
τ = L/R.
According to the definition, a capacitance is described by formula:
commencer à apprendre
C=Q/V
The resonant condition of the RLC circuit is described as:
commencer à apprendre
XC = XL
For an ideal capacitor, what is a value of dissipated energy when the voltage is supplied to it?
commencer à apprendre
Wc = 1/2 CV^2
According to the definition, the electric field strength is described by formula:
commencer à apprendre
Ę = F/Q
For charging phase of the R-C network, the current iC is determined by formula:
commencer à apprendre
Ic = Io*e^-t/RC
How many electrons have to pass through a copper wire in 1 second to get a 1 ampere of current?
commencer à apprendre
6.242 E18
What is a starting mechanism of current flow?
commencer à apprendre
Applied voltage
The current through, or voltage across, any element of a network is equal to the algebraic sum of the currents or voltages produced independently by each source.
commencer à apprendre
Superposition Theorem
The algebraic sum of the currents entering and leaving a junction of the network is zero.
commencer à apprendre
kirchoffs current law
The definition of 1 volt is properly described by following equation:
commencer à apprendre
V = W/Q
The relative permeability for diamagnetic materials is:
commencer à apprendre
ur < 1
For an ideal capacitor, what is a value of dissipated energy when the voltage is supplied to it?
commencer à apprendre
Wc = 1/2CV^2
if you move the conductor through field at right angles to the magnetic flux you will generate the...
commencer à apprendre
Maximum inducted voltage
The Coulomb’s law, between Q1 and Q2 charges at a distance r, is described by formula:
commencer à apprendre
F = k * (Q1Q2 / r^2)
The reactive power Q can be described as...
commencer à apprendre
Power absorbed or returned by capacitor
The maximum value of the waveform measured from its average or mean value is called...
commencer à apprendre
Peak amplitude
The higher value of sensitivity level of the resistor to temperature [ppm/°C] means
commencer à apprendre
higher resistance changes due to temperature differences
The phase relationship between voltage and current for an inductor can be described as:
commencer à apprendre
iL leads vL by 90°(probably)
Depicted Z =f(f) function (impedance vs. frequency) represents the practical equivalent for...
commencer à apprendre
capacitor
For an ideal capacitor, what is a value of dissipated energy when the voltage is supplied to it?
commencer à apprendre
wc=1/2CV^2
Which of the expressions does not describe the magnitude of average power (for sinusoidal waveform)?
commencer à apprendre
P = Wm Im cos 0

Vous devez vous connecter pour poster un commentaire.