What are the disadvantages of arcing in a conventional DC motor?
What will be an ideal response?
In a conventional direct current (DC) motor, electrical arcing not only causes wear but results in electrical interference in computer circuits.
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A ________ is used to seal the opening for the compressor drive shaft.
A) Seal cartridge B) Lip seal C) Either A or B D) Neither A nor B
According to technicians that take the exam, which question type is the most difficult?
A) Technician A/ Technician B B) All of these EXCEPT questions C) Multiple choice single answer D) Most-likely type questions
A flow control device that stops or allows the flow of a refrigerant in a refrigeration system based on an electric signal in:
A) A solenoid valve. B) An automatic expansion valve. C) A crankcase pressure regulator. D) An evaporator pressure regulator.
Modern broiler houses use what as a method for cooling?
A. ceiling fans B. air conditioning C. skylights D. tunnelventilation