Many things can go wrong with an air compressor, one of which is the same problem that may be encountered with hydraulic pumps. This is ____.
A. entrained air
B. bearing failure
C. worn cylinder walls
D. vane wear
Answer: B
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This is the most commonly used method of making castings.
a. centrifugal casting b. die casting c. permanent casting d. investment casting
There are ____ seconds in a minute.
A. 60 B. 120 C. 360 D. 600
Assume the per unit losses on a small system can be approximated as 0.15(PG1)2 + 0.1(PG2)2 - 0.05 PG1 PG2. If the per unit generator outputs are PG1 = 1 and PG2 = 2, what is the penalty factor for generator 1?.
What will be an ideal response?
The wiring and connectors that carry the power to a motor must be in good condition. When a connection becomes loose, oxidation of the copper wire occurs. The oxidation ____.
A. has no effect on the electrical connection B. acts as an electrical resistance and causes the connection to heat more C. decreases the resistance D. none of the above