A centrifugal compressor can be unloaded down to ____% of its full capacity.

A. 10
B. 20
C. 30
D. 40


Answer: A

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If you have a raceway with 35 current-carrying conductors, by what adjustment factor must you multiply the ampacity?

A. 0.2 B. 0.3 C. 0.4 D. 0.5

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Answer the following statement(s) true (T) or false (F)

1. Fuel cell stacks can only operate at low temperatures. 2. Fuel cell systems can be portable or stationary. 3. Starting up the system is probably the most complicated of the operations expected for fuel cells systems. 4. Typically, fuel cells claim long scheduled maintenance intervals and high reliability 5. Rare earth elements react vigorously with hydrogen.

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____ is a method of finding an unknown value by comparing it with known values.

A. Scaling B. Interpolation C. Grading D. Cutting

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On a fuel injected engine, what is the most probable result of a faulty (worn) TPS that results in a voltage drop-out as the throttle is opened?

A. Cranks but won't start B. Hesitates on acceleration C. Starter cranks slow D. Engine diesels on shutdown

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