Exam 22: Inductive Circuits

Although X_L and R are both measured in ohms, they cannot be added by simple arithmetic.

Although inductive current lags inductive voltage by 90°, both waves have the same frequency.

In a series RL circuit, I and IR have a phase angle of 0°.

In a coil, the ratio of reactive power in the inductance to the real power dissipated in the resistance is the

A parallel circuit has

The phase angle for the voltage across X_L is at 180° with respect to the current through L.

When sine-wave variations of current produce an induced voltage, the current

For a circuit with L and R in series, the X_L can be high for an undesired ac signal frequency, whereas R is the same for either direct current or alternating current.

What is the phase relationship between I_R and V_A in a parallel RL circuit?

The resultant of the phasor addition of R and X_L is their total opposition in ohms, called impedance.

______________ effect results from the fact that current in the center of a wire encounters slightly more inductance because of the magnetic flux concentrated in the metal, compared with the edges.

When sine wave variations of current produce an induced voltage, the current lags its induced voltage by exactly 90°.

The angle between the generator voltage and its current is the ______________ angle of the circuit.

The ratio of reactive power in the inductance to the real power dissipated in the resistance is the ______________ of the coil.

In an RL circuit, as the frequency increases

The reciprocal of the power factor can be considered the ______________ of the capacitor.

In a series circuit, the higher value of X_L compared with R, the more ______________ the circuit.

If the internal resistance of a coil is low

The factors that make the effective resistance of a coil more than its dc resistance do not include which of the following?

The tangent is a trigonometric function of any angle of a right triangle, equal to the ratio of the adjacent side to the hypotenuse of a triangle.