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Questions in engineering

📝 Answered - 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

📝 Answered - 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

📝 Answered - Passenger vans have a high center of gravity because of their design and shape. TRUE FALSE

📝 Answered - Which component converts hydraulic power into mechanical power? A. Gear pump B. Cylinder C. Relief valve D. Axial piston pump

📝 Answered - 2 psia is equivalent to a. $29^{\circ} Hg$ b. $27^{\circ} Hg$ c. $26^{\circ} itg$ d. $28^{\circ} Hg

📝 Answered - 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.

📝 Answered - 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

📝 Answered - 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?

📝 Answered - Where would you look on a system for a TXV to determine if you use superheat or subcool as the charging method? A. Before the compressor B. Before the filter drier C. Before the evaporator D. Before the condenser

📝 Answered - Activity: Docking With Wind or Current Toward the Dock How should you approach the dock? * The wind/current direction is toward the dock. * A. at a 90-degree angle, bow first B. at a 90-degree angle, stern first C. quickly and into the wind D. slowly and with the boat parallel to the dock