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2.E: Self Test 2

  • Page ID
    3513
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    • Contributed by Camosun College
    • Sourced from BCCampus (Download for free at http://open.bccampus.ca/find-open-textbooks)

    Self-Test 2

    1. What is the lowest amperage at which fatal injury can occur in a human?
      1. 15 A
      2. 0.15 A
      3. 50 mA
      4. 15 mA
    2. If you measure voltage across a switch, what state is it in?
      1. Open
      2. Closed
    3. If you measure correct voltage across a load but the load doesn’t work, what is wrong?
      1. There is no power.
      2. There is no current.
      3. A switch is open.
      4. The load has failed.
    4. Refer to Figure 1. If you have a reading at point 4, but not at 5, what is the problem?
      1. The load has failed.
      2. The switch is open.
      3. The wiring has failed.
      4. The ground has failed.
    hopscotchTroubleshooting1.png
    Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
      1. Refer to Figure 1. If you have a reading at 5 and zero at 6, what is the problem?
        1. The load has failed.
        2. The switch is open.
        3. The wiring has failed.
        4. The ground has failed.
      2. What is always the first step when testing for resistance?
        1. Check the load.
        2. Remove the component.
        3. Turn the circuit power on.
        4. Turn the circuit power off.
      3. What is the best test for checking if a heating element is faulty?
        1. Voltage test
        2. Continuity test
        3. Amperage test
        4. They cannot be tested.
      4. What will increase when power sources are connected in series?
        1. Voltage
        2. Current
        3. Resistance
        4. Continuity