Day 6 AC Theory

Which of these two types of current is easier to generate and more reliable:

• Direct Current

• Alternating Current

Most Aircraft using a 24-volt DC system have special equipment that requires a certain amount of ____ power.

• 220 Hz

• 120 Hz

• 400 Hz

Alternating current is constantly changing intensity and ____ .

• ohms

• amperage

• direction

Tags

NGSS.HS-PS2-5

Peak value is at what degree rotation EMF

• 90
• 360
• 180

Tags

NGSS.HS-PS2-5

Whenever voltage or current passes through a series of changes, then returns to starting point and do the same again is known as a:

• Cycle

• Fluctuation
• Rotation
• Vibration

One half cycle of an AC circuit is known as:

• Three-quarters cycle
• Quarter cycle
• Alternation

• Full cycle

Cycles per second is also known as:

• Watt
• Volt
• Newton
• Hertz

Tags

NGSS.HS-PS4-1

The length of time required for one cycle:

• period

• rotation

• induction

Tags

NGSS.MS-ESS1-1

The distance a waveform travels during a period

• amplitude
• frequency
• velocity
• wavelength

Tags

NGSS.HS-PS4-1

The value of voltage or current at any point along the sine wave is known as:

• Maximum value
• Instantaneous value
• Average value
• Peak value