1.5 and 1.6 AC

What does RMS value represent in an AC circuit?

• a) Maximum value of the waveform

• b) Average value of the waveform

• c) Root mean square value of the waveform

• d) Peak-to-peak value of the waveform

The average value of an AC waveform over a complete cycle is always ________.

• a) Zero

• b) Positive

• c) Negative

• d) Depends on the waveform shape

Reactive power is associated with ________ elements in an AC circuit.

• a) Resistive

• b) Inductive

• c) Capacitive

• d) Both inductive and capacitive

Instantaneous power in an AC circuit is given by the product of ________.

• a) Voltage and current

• b) Voltage and resistance

• c) Current and resistance

• d) Voltage and capacitance

What is the instantaneous power in an AC circuit?

• a) The power at any given moment in time

• b) The average power over a complete cycle

• c) The power factor of the circuit

• d) The power consumed by resistive elements only

Apparent power in an AC circuit is the ________ of real power and reactive power.

• a) Sum

• b) Difference

• c) Product

• d) Ratio

The real power in an AC circuit is measured in ________.

• a) Watts

• b) Volts

• c) Amperes

• d) Ohms

Reactive power in an AC circuit is measured in ________.

• a) Watts

• b) Volts

• c) Amperes

• d) Volt-amperes reactive (VAR)

Apparent power in an AC circuit is measured in ________.

• a) Watts

• b) Volts

• c) Amperes

• d) Volt-amperes (VA)

What does RLC stand for in RLC circuits?

• a) Resistor, Load, Capacitor

• b) Resistor, Light, Current

• c) Resistance, Inductor, Capacitor

• d) Resistance, Load, Current