CHAPTER 6: ALTERNATING CURRENT

AC stands for

• Air-conditioner

• Direct Current

• Alternating Current

• Alternating Voltage

Battery is

• AC source

• DC source

• none of the above

• all of the above

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

another.

• together

• anti phase

• in phase

• full rotation

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

• true and apparent

• true and real

• positive and negative

• factor and real

The current in an inductive circuit _____.

• is faster than the voltage

• is the same as the voltage

• lags the voltage

• counteracts the voltage

When frequency decreases, capacitive reactance _____.

• increases

• decreases

• remains the same

• may increase or decrease

Tags

NGSS.HS-PS4-1

Which of the following is true of the current in a capacitive circuit?

• It leads the voltage.

• It lags the voltage.

• It is the same as the voltage.

• It counteracts the voltage.

Inductive reactance increases as the _____.

• frequency increases

• frequency decreases

• impedance increases

• impedance decreases

Tags

NGSS.HS-PS4-1

The power factor can be defined as the ratio of true power to _____.

• apparent power

• total resistance

• total current

• reactive power

Tags

NGSS.HS-PS2-5

Which one of the below AC parameters show the effective Dc value?

• Peak Value

• RMS value

• Peak to peak value

• Frequency