Related Questions

If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit
A Doubles
B Halves
C Remains constant
D Cannot be determined without values
In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.
A True
B False
A simple spring-mass vibrating system has a natural frequency of $${{\text{f}}_{\text{n}}}.$$ If the spring stiffness is halved and the mass is doubled, then the natural frequency will become
A $$\frac{{{{\text{f}}_{\text{n}}}}}{2}$$
B $$2{{\text{f}}_{\text{n}}}$$
C $$4{{\text{f}}_{\text{n}}}$$
D $$8{{\text{f}}_{\text{n}}}$$
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance decreases
A True
B False
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance
A Decreases
B Increases
C Does not change
D Cannot be determined without values
The impedance of a series RC circuit varies directly with frequency.
A True
B False
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
A Increases
B Decreases
C Remains the same
D Doubles
In a series resonant circuit, the impedance of the circuit is
A Minimum
B Maximum
C Zero
D None of the above
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased
A VR > VC
B VC > VR
C VR = VC
D VR and VC = 0
An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then
A VR = VL
B VL
C VL = VR
D VL > VR

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