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Questions in engineering

[Answered] Using a coarse cut file on soft material will prevent: A. dragging B. clogging C. injury D. damage to the file

[Answered] What must be done when a refrigeration system has automatic leak detection equipment installed? A. It must be calibrated periodically. B. All sensors must be replaced monthly. C. It must be primed with refrigerant prior to use. D. It must be replaced every three years.

[Answered] How do commercial refrigeration systems differ from household refrigerators? A. They use a different class of refrigerants. B. They always operate at lower temperatures. C. They use vastly different components. D. They are typically larger in capacity.

[Answered] Which of the following should be included in a vehicle safety check to ensure a smooth ride without unexpected delays? A. Tire condition B. Cleanliness of vehicle C. Full tank of gas D. Music choices

[Answered] When using a multi-use ladder on stairs, the short end of the ladder should always be placed on the floor or landing area. True False

[Answered] Q9: Class 0 high voltage gloves protection is rated at A. 500 B. 1000 C. 200 D. 5000 volts.

[Answered] Which type of ladder is rated for 200 pounds and is not recommended for industrial or commercial operations? A. Type II B. Type 1 C. Type I

[Answered] 6. Finished foam that has a shorter drain rate indicates foam with: A. Drainage rate B. Expansion rate C. Finished rate D. Mixing rate 7. Class A fires typically will require which type of foam? A. Low expansion foam B. Mid expansion foam

[Answered] 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.

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