Many small single-phase motors change speed by varying the amount of voltage applied to the motor. This method changes the speed of the rotating magnetic field of the motor.
Answer the following statement true (T) or false (F)
False
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The size indicated for the diameter of copper tubing used for plumbing is the ____.
A. inside diameter B. outside diameter C. wall thickness D. None of the above.
Which of the following features of a hydraulic brake system are mandatory by FMVSS 105 compliant vehicle?
A. dual hydraulic circuits B. mechanical parking brakes C. mechanical emergency brake D. all of the above
More charge should be added to a system if:
A) The system subcooling is more than 1°F lower than specified. B) The system subcooling is exactly the same as specified. C) The system subcooling is more than 1°F higher than specified. D) The system subcooling is less than 1°F higher than specified.
All air has a dew point, the ____ at which vapor condenses into water droplets.
A. temperature B. humidity level C. energy level D. moisture level