Related Questions

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

Next steps