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Questions in engineering

[Homework Help] Which of the following component failures will cause an increase in refrigerant pressures? A. Faulty evaporator fan motor B. Refrigerant leak C. Faulty condenser fan motor D. Faulty liquid line solenoid

[Homework Help] A walk-in with TEV has the following conditions: Subcooling is 0° LOW Superheat is 25° HIGH Which of the following could cause this condition? A. Overcharge B. Undercharge C. Dirty condenser D. Dirty or iced evaporator

[Homework Help] Which action exposes workers to fall hazards? A. Overreaching B. Paying attention C. Respecting fall hazards

[Homework Help] 3. Which of the following foam delivery systems operates using A. Injection systems B. Induction C. Batch mixing D. Pre-mixing 4. Foam after being aerated, as it exits nozzle or discharge device is a A. foam solution

[Homework Help] Which type of pliers is best suited for grasping small components? A. combination pliers B. needle nose pliers C. locking pliers D. diagonal cutting pliers

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

[Homework Help] 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.

[Homework Help] 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.

[Homework Help] 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

[Homework Help] 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