
Phase 2: Week 3 Review
The Mentor-led questions (at right) are to be asked by the Mentor during the weekly review.
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The Technician in Training should record the full Q&A discussion and upload the audio file using the form below. Once complete, press Submit to finalize this week’s assessment.
After Upload, press Submit.
Mentor-Led Q&A

1. What are the important components to electrical safety? What PPE is required and when?
2. What does a Transformer do? What voltages do we usually see on Control Transformers inside the starter cabinet?
3. What do we mean by Primary Voltage and Secondary Voltage on a transformer?
4. What is an Auxiliary Contact and what does it do?
5. What is a relay? How does it work? Why do we use them?
6. What do we mean by normally open and normally closed?
7. What is alternating current? What is frequency and what is the unit for it?
8. What does a transducer do? What is the output of the transducers we use on R Series compressors?
9. How do temperature sensors operate? How do we test them?
10. What kinds of sensors do we use on air compressors?
11. How do you test fuses and circuit breakers?
12. How do you test contactors and auxiliary contacts?
13. What is the purpose of a megger test? What exactly are you measuring? Can a regular multimeter be used instead?