Find out how much you know about electrical troubleshooting by taking this evaluation. This will give you a better idea of what you really know and if this workshop is for you.
The evaluation is 16 questions and some are short answer so be prepared for it to take 10-15 minutes to complete.
Click the button below to start.
Question 1 of 16
1. Assuming all lamps are the same type and model, and S2 is being pushed in, how would the current through L1, L2, and L3 compare?
Question 2 of 16
2. Assuming all lamps are the same type and model, and S2 open but S1 is closed, and the voltage source is set to 24 vdc, what would the approximate voltage across each lamp be?
Question 3 of 16
3. Based on the diagram shown, assuming all lamps are same type and model, rank the brightness of each lamp from dimmest to brightest (if two lamps are equal list them side by side).
Question 4 of 16
4. The white light is ON, but the green light is OFF. List each component or item that could cause this problem:
Question 5 of 16
5. Explain the symptoms that would occur if the wire between terminal 4 and 2LT became disconnected or severed.
Question 6 of 16
6. All of the safety controls on a boiler are closed and the burner has a call for heat. What should the voltage across the 1LLS low water cutoff be (from one side of the level switch to the other)? The secondary voltage of the step down transformer is 115vac.
Question 7 of 16
7. What should the voltage be between terminal 2 and terminal 4 during a Call for Heat? All of the safety controls on a boiler are closed during a call for heat. The secondary voltage of the step down transformer is 115vac.
Question 8 of 16
8. During a call for heat in the purge sequence after the combustion air fan is turning at normal speed, what voltage will you measure from pin 6 to pin 7 of the RM7800 if the combustion air switch 3PS sensing line is leaking and fails to close the switch. The secondary voltage of the step down transformer is 115vac.
Question 9 of 16
9. Based on the illustration of a typical digital multimeter, which jacks would you plug the leads into to measure the voltage across a relay coil?
Question 10 of 16
10. You are measuring resistance across a coil and see 0.013 KΩ - but it is supposed to be approximately 12.5 ohms. What is going on?
Question 11 of 16
11. Based on the illustration of a typical digital multimeter, what position would the rotary switch be in to measure the voltage across the secondary (output) side of the transformer?
Question 12 of 16
12. Based on the illustration of a typical digital multimeter, what position would the rotary switch be in to measure the resistance of a suspected faulty relay coil?
Question 13 of 16
13. You suspect that fuse 2FU has blown. How would you test the fuse to determine its condition? What do you expect to see if the fuse is truly bad?
Question 14 of 16
14. Explain how to use a voltmeter to test if the overload has tripped on the Burner Motor Starter?
Question 15 of 16
15. Explain how to use a resistance check to confirm that 2VLV Main Gas Valve is defective?
Question 16 of 16
16. How can you test the Normally Closed contacts on a relay or motor starter with an Ohm-meter?
