002300 PAPER

What does RMS stand for in AC circuits?

• Real Mean Signal

• Root Mean Square

• Relative Mean Standard

• Resistance Measurement Scale

What is the formula for frequency in terms of periodic time?

• f = T

• f = 2T

• f = 1/T

• f = T/2

What is the unit of frequency?

• Volt

• Ampere

• Hertz

• Ohm

What is the peak value of a 230V (rms) AC voltage?

• 115V

• 325V

• 230V

• 460V

Which instrument is used to display an AC signal waveform?

• Voltmeter

• Ammeter

• Oscilloscope

• Ohmmeter

What is the formula for capacitive reactance XC?

• XC = 2πfC

• XC = 1/2πfC

• XC = f/C

• XC = C/f

In a capacitive circuit, current leads voltage by:

• 0°

• 45°

• 90°

• 180°

In an inductive circuit, current lags voltage by:

• 0°

• 45°

• 90°

• 180°

What is the formula for inductive reactance XL?

• XL = 2πfL

• XL = 1/2πfL

• XL = f/L

• XL = L/f

What is the unit of inductive reactance?

• Farad

• Volt

• Ohm

• Coulomb