What are the advantages and disadvantages of a FCEV vehicle?
What will be an ideal response?
Advantages: Zero emissions. Disadvantages include: Limited production, high cost, increased safety considerations, lack of refueling infrastructure, low capacity storage tanks, uses electricity to produce hydrogen.
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Which of the following can accelerate corrosion rates and damage vessels by overheating?
a. Overpressurization b. Underpressurization c. A vacuum within the vessel d. Changes in operating temperatures
What is the total pulling tension when pulling a cable weighing 5 pounds per foot through a 500' conduit with a coefficient of friction of 0.35?
a. 176.75 b. 180 c. 875 d. 7,142
When leak testing a low-pressure chiller, the pressure should not be allowed to exceed 10 psig to avoid:
A) High compressor current draw. B) Opening the high-pressure cutout and shutting the system down. C) Freezing the chiller bundle. D) Breaking the rupture disk and losing the refrigerant charge.
Closed transition starting is generally used on starters size 6 and larger.
Answer the following statement true (T) or false (F)