The best thermal efficiency of power plants is, on the average, _____.
a. 15 percent
b. 30 percent
c. 40 percent
d. 55 percent
c. 40 percent
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What is the primary purpose of a boiler?
a. Heat large quantities of hydrocarbons for commercial use. b. Steam generation for commercial use. c. Provide heat during winter months for control rooms. d. Burn excess hydrocarbons safely and efficiently.
____________________ are metal rings used as spacers.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Analog meters operate on the principle that like magnetic poles attract each other. 2. The secondary winding of a CT should never be opened when power is being applied to the primary. 3. The Hall generator produces a voltage in the presence of a magnetic field. 4. A bridge is constructed by connecting six components to form a parallel-series circuit. 5. A Megger® is available as a battery-operated model.
The effects of an excessive feed rate are:
A) Cutting edge chipping and possible broken cutters B) Long lasting cutting edges C) Very good surface finish D) Rapid cutting edge wear