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Questions in engineering

[Jawaban] Which of the following statements is NOT TRUE regarding EV lifting/jacking? A. All Ultium powered vehicles require a jack with an integrated secondary mechanical locking mechanism. B. Suspension contact hoists should be used whenever possible. C. Parking pawl on Ultium vehicles may be in either front or rear electric drive unit. D. Removing the jack opening covers may be required before placing the jack or setting the hoist arms.

[Jawaban] A 33kV medium voltage feeder line can stretch up to an average of how many kilometers? A. 50km B. 80km C. 150km D. 200km

[Jawaban] Personal fall protection should be used when: A. Guardrails are not able to be installed B. Floor holes are covered C. Climbing any ladder D. Working on stable walking surfaces

[Jawaban] If you have an 80% furnace in a basement running 60,000 BTU/h, what is the minimum space needed so that it is not considered a confined space? A. 3000 ft3 B. 3000 ft2 C. 3000 ft D. 5000 ft3 E. 1000 ft3

[Jawaban] Passenger vans have a high center of gravity because of their design and shape. TRUE FALSE

[Jawaban] Which component converts hydraulic power into mechanical power? A. Gear pump B. Cylinder C. Relief valve D. Axial piston pump

[Jawaban] 2 psia is equivalent to a. $29^{\circ} Hg$ b. $27^{\circ} Hg$ c. $26^{\circ} itg$ d. $28^{\circ} Hg

[Jawaban] What do you do if you see the evaporator coil covered with dirt, hair, or matted with foreign material? A. Clean the coils as best you can and move on. B. Run away. C. Ignore it and finish the job. D. Inspect the filters and recommend changing the filters and quote a deep coil clean.

[Jawaban] Which of the following components may have failed if a large amount of frost is present on the evaporator coil? A. Defrost timer, liquid line solenoid, or space thermostat B. Condenser fan motor, compressor contactor, or defrost heater C. Defrost timer, defrost heater, or defrost thermostat D. Defrost thermostat, compressor motor, or oil regulator

[Jawaban] A indicates foam with a more fluid consistency. A. longer drain rate B. shorter drain rate C. longer expansion rate D. shorter expansion rate Which of the following statements is correct?