Why is it incorrect to close the suction line service valve to test a compressor?
What will be an ideal response?
Closing the suction line service valve causes the compressor to pull a vacuum on itself. Compressors that are not designed to operate in a vacuum can arc out electrically if operated in a vacuum.
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Technician A says that E3 injectors are better suited to multi-pulse injection because the injection pressure is not required to collapse within the EUI between injection pulses. Technician B says that at any time the NCV actuator is energized in a E3 injector, pressure rise is created in the EUI pump chamber. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
Technician A says that all components in the high voltage battery box are completely insulated from the rest of the vehicle for safety. Technician B says that the high voltage battery box is located under the hood in some vehicles. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
MERV filter rating system
A) Compares the airflow resistance of different filters when fully loaded B) Compares the arrestance value of 12 different ranges of particle size C) Compares the airflow resistance of different filters when they are new D) Compares the overall arrestance value of all sizes of particles
A certain medical imaging device commonly referred to as “ultrasound” creates sound by oscillating with a period of 0.4 µ . What is the frequency of this oscillation?
What will be an ideal response?