If the draft available at a boiler outlet is lower than recommended, which of the following might correct the situation?
A) Shorten the stack.
B) Install an induced draft fan.
C) Install a pressure balancing damper.
B) Install an induced draft fan.
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Explain why it is necessary to ensure that the concrete subfloor over which sheet vinyl (or vinyl tiles) are laid is smooth, i.e., the subfloor should be ground smooth and depressions in it filled with a patching compound.
What will be an ideal response?
Which of the following is an incorrect statement about the use of a shackle?
a. Shackles with pins worn more than 10 percent should be replaced. b. A shackle pulled out at an angle has a reduced capacity. c. A shackle should never be used such that the pin can roll under load. d. When using a shackle with a hook, the shackle body should be hung on the hook.
The moldboard plow:
a. turns soil to mix crop residue, livestock manure, lime, and fertilizer b. leaves the crop residue on the surface of the soil c. leaves a large ditch for irrigation purposes d. is no longer used because it encourages erosion
The three types of bedrock are igneous, metamorphic, and ____________________
Fill in the blank(s) with the appropriate word(s).