Doubling the operating voltage of a purely capacitive circuit:

Doubling the operating frequency of a purely capacitive circuit:

A

has no effect on the total circuit current

B

doubles the amount of total current

C

cuts the total current by one-half

D

thrice the amount of total current

E

None of the above

Doubling the operating frequency of a purely inductive circuit:

A

doubles the amount of current through the inductors

B

has no effect on the current through the inductors

C

cuts the current through the inductors one-half

D

increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit

E

None of the above

Doubling the operating frequency of a capacitive circuit:

A

doubles the amount of a capacitive reactance

B

has no effect on the capacitive reactance

C

cuts the capacitive reactance in half

D

multiplies the capacitive reactance by 6.28

E

None of the above

Which one of the following phrases most accurately describes a purely capacitive circuit?

A

Resistances provide the only opposition to current flow

B

Capacitive reactance provides the only opposition to current flow

C

The ac voltage leads the current by 90 degree

D

Combinations of resistance and capacitive reactance provide any opposition to current flow

E

None of the above

Doubling the operating frequency of an inductive circuit:

A

has no effect on the inductive reactance

B

doubles the amount of inductive reactance

C

multiplies the inductive reactance by 6.28

D

cuts the inductive reactance in half

E

None of the above

If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because

A

varying voltage produces the charging and dicharging currents

B

of high peak value

C

charging current can flow

D

discharge current can flow

Which one of the following phrases most accurately describes a purely inductive circuit?

A

Resistances provide the only opposition to current flow

B

Inductive reactance provides the only opposition to current flow

C

Combinations of resistance and inductive reactance provide any opposition to current flow

D

The ac voltage lags the current by 90 degree

E

None of the above

For a purely inductive circuit which of the following is true?

A

Apparent power is zero

B

Relative power is zero

C

Actual power of the circuit is zero

D

Any capacitance even if present in the circuit will not be charged

At __________ frequencies the parallel R-L circuit behaves as purely resistive.

A

Low

B

Very low

C

High

D

Very high

In a purely inductive circuit

A

Actual power is zero

B

Reactive power is zero

C

Apparent power is zero

D

None of above is zero

Doubling the operating voltage of a purely capacitive circuit:

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