It is vital that the solar collectors and all exposed piping in a drain-back system be pitched a minimum of ____ toward the storage tank to allow complete drainage.
a. 1/4 in./ft.
b. 1/2 in./ft.
c. 1/8 in./ft.
d. 1/16 in./ft.
a. 1/4 in./ft.
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What is the term used to describe the condition that occurs when two clamped components such as a cylinder head and cylinder block, expand and contract at different rates?
A. creep B. thermodynamics C. gasket failure D. leaks
Which law states that the deflection of a spring is directly proportional to the applied force?
A) Halderman's law B) Newton's law C) Hooke's law D) Pascal's law
Control joints should be cut into concrete slabs between 4 and 12 hours after concrete placement using a
_____. a. steel trowel b. dry-cut saw blade c. wet-cut saw blade d. jointing chisel
During slow driving there is a need of _______________ fluid flow but a need for _______________ pressure.
Fill in the blank(s) with the appropriate word(s).