In a parallel LC circuit, if the input signal frequency is increased above resonant frequency then ___________

In a parallel LC circuit, if the signal frequency is decreased below the resonant frequency, then ___________

A

XL decreases and XC increases

B

XL increases and XC decreases

C

Line current becomes minimum

D

None of the above

The bandwidth of a resonant filter is determined by the quality factor (Q) of the circuit and the resonant frequency.

A

True

B

False

For frequencies above the resonant frequency, a parallel LC circuit behaves as a ___________ load

A

Capacitive

B

Resistive

C

Inductive

D

None of the above

When operating above its resonant frequency, a parallel RLC circuit has the characteristics of a:

A

parallel RL circuit

B

parallel RC circuit

C

parallel RLC circuit operated above its resonant frequency

D

purely resistive circuit

E

None of the above

For frequencies below the resonant frequency , a parallel LC circuit behaves as a ___________ load

A

Inductive

B

Resistive

C

Capacitive

D

None of the above

If the resistance in parallel with a parallel resonant circuit is reduced, the bandwidth

A

Disappears

B

Becomes sharper

C

Increases

D

Decreases

When either L or C is increased, the resonant frequency of LC circuit ___________

A

Remains the same

B

Increases

C

Decreases

D

Insufficient data

For frequencies above the resonant frequency , a series LC circuit behaves as a ___________ load

A

Resistive

B

Inductive

C

Capacitive

D

None of the above

To tune a parallel resonant circuit to a higher frequency, the capacitance should be

A

Increased

B

Decreased

C

Left alone

D

Replaced with inductance

When a parallel RLC circuit is operating at its resonant frequency:

A

capacitive reactance is greater than the inductive reactance

B

inductive reactance is greater than the capacitive reactance

C

inductive reactance is equal to the capacitive reactance

D

the difference between inductive and capacitive reactance is equal to the resistance

E

None of the above

In a parallel LC circuit, if the input signal frequency is increased above resonant frequency then ___________

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