Alternating Current

The working voltage in an ac circuit should be

• equal to the highest applied voltage

• at least 20 percent greater than the highest applied voltage

• at least 50 percent greater than the highest applied voltage

The term that describes the combined resistive forces in an ac circuit is

• resistance

• reactance

• impedance

Tags

CCSS.7.NS.A.1D

The basis for transformer operation in the use of alternating current is mutual

• inductance

• capacitance

• reactance

The opposition offered by a coil to the flow of alternating current is called (disregard resistance)

• impedance

• reluctance

• inductive reactance

Tags

CCSS.HSN.VM.A.1

An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?

• Inductance and frequency

• Resistance and voltage

• Resistance and capacitive reactance

Capacitors are sometimes used in DC circuits to

• counteract inductive reactance at specific locations

• smooth out slight pulsations in current/voltage

• assist in stepping voltage and current up and/or down

In an ac circuit, the effective voltage is

• equal to the maximum instantaneous voltage

• greater than the maximum instantaneous voltage

• less than the maximum instantaneous voltage

The amount of electricity a capacitor can store is directly proportional to the

• distance between the plates and inversely proportional to the plate area

• plate area and is not affected by the distance between the plates

• plate area and inversely proportional to the distance between the plates

Unless otherwise specigied, any values given for current or voltage in an AC circuit are assumed to be

• instantaneous values

• effective values

• maximum values

The potential difference between two conductors which are insulated from each other is measured in

• volts

• amperes

• coulombs