OBD II scan tools are powered through the ____________________ and do not require an external power source.
Fill in the blank(s) with the appropriate word(s).
data link connector
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Why do large synchronous generators use an exciter?
What will be an ideal response?
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A rear view mirror is being tested for proper auto-dimming operation. What should the technician check for?
A) Check the operation of the dimmer knob B) Make sure that the green power indicator light is on C) Make sure that the power indicator light is red, then green D) Open the mirror to check the fluid level (gel content)
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A crystal oscillator uses a crystal to determine the ________
A) output frequency B) dc output C) amount of positive feedback D) amount of negative feedback
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Which system allows simultaneous heating or cooling?
A) Heat recovery system B) Multisplit system. C) Mini-split system
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