1. Items that must be examined when inspecting manholes include _.
c. elevation of lid
d. all the above
2. Vibrations in pumps may be caused by improper motor-pump _.
d. power factor
3. Advantages of a video tape recording system include _.
a. ability to see what’s happening when camera is under water
b. cheaper than a Polaroid camera
c. length and severity of defective areas can be recorded
d. visitors are impressed
4. The most widely used type of prime mover in a pumping plant is _.
a. diesel engine
b. electric motor
c. gas engine
d. steam engine
5. Schedule 40 refers to _.
a. flow capacity
b. friction loss
c. tubing strength
d. wall thickness