The _____oil pump is most commonly used.
A. plunger
B. trochoid
C. gear
D. centrifugal
Answer: B
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Melting alloy and bimetallic overload relays are designed to _____.
a. trip an alarm signal b. keep the motor operating in the event of a sustained overload c. react to changes in the motor load current d. divert excessive current to prevent overheating
Assume an aluminum ladder-type cable tray has a load classification 10C. What does this load classification imply?
What will be an ideal response?
?Which is a primary factor in sizing a wood-gasification boiler?
A. ?the physical space available B. ?the amount of available firewood C. ?the number of firing cycles per day the owner is comfortable with D. ?the availability and location of electricity at the site
Which of the following statements about storing piles is true?
a. Piles should be stored so they do not sag. b. Steel piles must be allowed to develop a sacrificial layer of rust during storage. c. Piles should be stored at an angle so they’re easier to hoist. d. Piles should be stored where they will be driven.