Types of Signals Root Mean Square Current Transformers CT Conversion Voltage Measurement OpAmps Power Calculation Power Game Analogue Quiz

Test Your Knowledge

Knowledge Check

1. What is the relationship between RMS and Peak voltage for a sine wave?

RMS = Peak × 0.707RMS = Peak × 0.5RMS = Peak × 2RMS = Peak

2. What signal quantity (voltage range) do microprocessors typically use?

V

3. What happens when measuring AC voltage with a simple average?

You get the true power valueYou get zero for a complete cycleYou get the peak valueYou get the RMS value

4. A CT has a 100A primary rating and outputs 50mA. What is the turns ratio and required burden resistor for 1V output?

:1 (turns ratio)

Ω (burden resistor)

5. What is the main purpose of a voltage divider in measurement circuits?

To increase voltageTo safely scale down high voltagesTo filter noiseTo measure current