Alternating Current

In a circuit containing resistance only, the voltage and current are ____________________ with one

another.

• together

• within range

• in phase

• full rotation

The power consumed by ____________________ is called true power.

• resistance

• inductance

• impedance

• a device

The power factor is the ratio of __________________ power to _________________ power.

• true and apparent

• true and real

• positive and negative

• factor and real

LC circuits consist of a(n) ______________________ and a(n) _______________________ connected in

series or in parallel with a voltage source.

• voltage and resistance

• ohms and volts

• power and resistance

• inductance and capacitance

As in all series circuits, the ____________________ in a series LC circuit is the same at all points.

• voltage

• ohms

• current

• power

On a transformer with 100 volts applied to the primary, 200 turns in the primary, and a secondary

with 100 turns, the secondary voltage is ____________________ volts.

• 75

• 100

• 125

• 50

A(n) _____________________________________ can be used to electrically isolate a piece of equipment

from the power distribution system.

• distribution amp

• VOM

• isolation transformer

• electrical tester

Reactive power is the portion of apparent power that is caused by ____________________ and

____________________ in the circuit.

• resistance and reactantance

• true power and apparent power

• ohms and volts

• inductors and compacitors

The primary winding in a transformer is connected to the _____________________________________.

• voltage and impedance

• voltage and source

• voltage and resistance

• voltage and power

Apparent power is the product of the source ____________________ and the ____________________.

• voltage and impedance

• voltage and apparent power

• voltage and total current

• voltage and resistance