Provide an example of a step-up transformer in a heating system
What will be an ideal response?
An example of a step up transformer in a heating system is the ignition transformer that is used in fuel oil furnaces.
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What is the purpose of a photo-electric eye on an ice machine?
A) The photo-electric eye detects when no ice production has occurred and shuts down the unit, even if the bin is not full. B) The photo-electric eye detects when the ice bin is empty. C) The photo-electric eye detects when the ice bin is full. D) The photo-electric eye detects when no ice production has occurred and speeds up the freezing and harvesting cycles.
Which of these do NOT provide extra gears on some trucks?
a. Multi-speed rear axles. b. Automatic transmission. c. Auxiliary transmission.
What advantage does thermography have in some PM activities?
What will be an ideal response?
A raised metal frame that is sealed to the roof along the outside that rooftop air conditioners rest on is called a
A) plenum B) pad C) platform D) curb