When the frequency is decreased, the impedance of a parallel RL circuit Increases

When the frequency is decreased, the impedance of a parallel RL circuit

A

Increases

B

Decreases

C

Remains constant

D

Is not a factor

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

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

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 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

If the value of C in a series RLC circuit is decreased, the resonant frequency increases

A

True

B

False

When the frequency of the source voltage decreases, the impedance of a parallel RC circuit

A

Increases

B

Decreases

C

Does not change

D

Decreases to zero

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

A

XL increases and XC decreases

B

XL decreases and XC increases

C

Both XL and XC increase

D

Both XL and XC decrease

The total impedance of a parallel RLC circuit:

A

always increases as the applied frequency increases

B

is equal to the sum of the values of resistance, inductive reactance and capacitive reactance

C

always decreases as the applied frequency increases

D

is maximum at the resonant frequency

E

None of the above

When the frequency is decreased, the impedance of a parallel RL circuit Increases

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