Two types of shaft seals used for centrifugal pumps are ____.
A. stuffing box and mechanical types
B. stuffing box and splash types
C. ceramic and splash types
D. ceramic and bellows types
Answer: A
You might also like to view...
Figure 41-7
In the accompanying figure, second speed is obtained by closing ____________________ and shorting out the first three-phase resistor bank.
Fill in the blank(s) with the appropriate word(s).
Compute the volume in cubic feet of a sphere with a 9.20 inch diameter. Round the answer to 3 significant digits.
Fill in the blank(s) with the appropriate word(s).
The ____ costs less to operate than other methods.
A. shielded metal arc welding process B. gas metal arc welding process C. oxyfuel welding process D. gas tungsten arc welding process E. none of the above
A dual fuel heat pump is
A) A heat pump that can run on either AC or DC power B) A heat pump whose energy requirements are so massive that two fuel sources are required to operate it C) An air source heat pump added to a fossil fuel furnace D) A heat pump that can be field converted from air source to water source