Discuss some routine maintenance tasks of fuel cell systems.
What will be an ideal response?
Most systems will have routine maintenance tasks called out. These can include checking vents, filters, water traps, oil levels, hydrogen detectors, periodic leak tests, external fuel to internal fuel supply line checks, cable connections, monitoring equipment tests, circuit tests, inverter and chopper tests, and ground integrity tests.
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Before pulling a piston from a cylinder bore, which of the following is recommended?
A. remove the crankshaft B. pull piston through the bottom of the liner C. clean up the liner carbon ridge D. remove the main bearing cap
Which soil test measures how cohesive the soil is by rolling a moist sample of the soil into a ball?
a. plasticity b. thumb penetration c. pocket penetrometer d. sedimentation
____ lines are thin, solid lines that project from an object to show the extent or limits of a dimension.
A. Hidden B. Phantom C. Extension D. Dimension
Two principal components of a perspective drawing are ____.
A. the location of the station point, and the location of the vanishing point B. the picture plane, and the vanishing point vertical C. the horizon line, and the location of the picture plane D. the eye of the person viewing the object, and the location of the person in relation to the object E. none of the above