Practice Problems

Practice Problems#

For the circuit below, find the source RMS voltage, the turns ratio for the transformer, and the power produced by the source.

  1. What is the source current and turns ratio of the transformer?

  1. You want to plug a device with an ADC into the wall socket. The ADC requires Vin=30V~RMS~. Your group determines that you need to put something in to reduce the voltage before it gets to the ADC. One design partner thinks you need to add a resistive Voltage Adapter. The other says you should use a Transformer in the circuit. Which option is right and why?

  2. What is a semiconductor device that allows current to flow in only one direction?

    a. Diode

    b. Capacitor

    c. Circuit Breaker

    d. Transistor

  3. What does a capacitor do in an AC-to-DC Converter?

    a. Eliminates the Bias

    b. Kills the negative voltage

    c. Smooths the output

    d. Protects the circuit