Final Word Problems

For an inductor, the induced voltage, VL always ______________ the current by 90 degrees.

Inductive reactance is measured in ______________.

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

The series voltage drops VR and VL have individual values that are ______________ degrees out of phase.

______________ response is a temporary condition that exists only until the steady-state current is reached.

  and the RC time constant are both measures of the reaction of C to a change in _______________.

The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle.

When V and I are out of phase because of reactance, the product of V times I is called ______________ power

For _____________ inductors, the branch currents can be added algebraically.

The ______________ power in watts can be calculated as   

Calculate XL with L = 30mH and f = 1kHz

A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and

L. Determine the total current, It delivered by the voltage source Vt.

A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is

initially fully charged?

A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle.

The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.