HVAC electrical controls
Flashcard
•
Professional Development
•
Practice Problem
•
Hard
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8 questions
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1.
FLASHCARD QUESTION
Front
Name this device: Step up transformer, DPDT Relay, Controller, HOA switch
Back
DPDT Relay
2.
FLASHCARD QUESTION
Front
What's a relay?
Back
An automatic switch.
3.
FLASHCARD QUESTION
Front
A ladder wiring diagram is
Back
A representation of electrical circuitry in a system
4.
FLASHCARD QUESTION
Front
What is an example of a pilot duty control?
Back
A low voltage thermostat
5.
FLASHCARD QUESTION
Front
What is a step down transformer?
Back
A voltage converting device
6.
FLASHCARD QUESTION
Front
What does lock rotor current mean?
Back
The current inrush pulled by a motor at start up.
7.
FLASHCARD QUESTION
Front
What is the purpose of a grounding circuit on a high current load?
Back
Safety
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