AC Circuit Quiz

What is the formula to calculate the effective value of an AC sine wave?

• 0.5 x peak value

• 0.707 x peak value

• 1.5 x peak value

• Peak value

For a waveform with 8 cycles in 2 seconds, what is the frequency in Hz?

• 4 Hz

• 8 Hz

• 16 Hz

• 2 Hz

What is the period of a waveform if the frequency is 50 Hz?

• 0.02 seconds

• 0.1 seconds

• 0.5 seconds

• 0.5 milliseconds

How is wavelength (λ) calculated for an AC sine wave?

• λ = speed of light / frequency

• λ = speed of light x period

• λ = period / speed of light

• λ = frequency / speed of light

If an AC waveform has a frequency of 60 Hz, what is its period?

• 0.0167 seconds

• 0.5 seconds

• 1.67 milliseconds

• 6 milliseconds

How is inductive reactance (XL) calculated?

• XL = 2πfL

• XL = 1/2πfL

• XL = fL

• XL = L/f

If the inductance (L) is 0.05 H and the frequency (f) is 60 Hz, what is the inductive reactance (XL)?

• 18.84 ohms

• 6 ohms

• 9.42 ohms

• 3.14 ohms

How is capacitive reactance (XC) calculated?

• XC = 1/2πfC

• XC = 2πfC

• XC = fC

• XC = C/f

For a frequency of 50 Hz and capacitance of 100 µF, what is the capacitive reactance (XC)?

• 31.83Ω

• 318.3Ω

• 0.318Ω

• 63.66Ω

If a resistor and inductor are connected in parallel with a frequency of 60 Hz and inductance of 0.1 H, what is the inductive reactance (XL)?

• 37.7Ω

• 60Ω

• 10Ω

• 20Ω