What does the deck generally consist of in steep roofs?
What will be an ideal response?
Oriented strandboard (OSB) panels, typically 1/2 in. thick.
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Two technicians are discussing A/C systems. Technician A says that the TXV system uses a receiver–drier mounted in the suction line. Technician B says that the orifice tube system uses an accumulator in the suction line. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Answer the following statement(s) true (T) or false (F)
1. Transformers are among the least efficient machines known. 2. Transformer values of voltage, current, and turns can be computed using formulas. 3.When computing the values of a transformer with multiple secondary windings, treat each secondary as part of the transformer group as a whole. 4.Loads that are intended to operate on 120 V, such as water heaters, electric resistance heating units, and central air conditioners, are connected directly across the lines of the secondary. 5.The nameplate lists the current rating of the windings.
Since 1997 which of the following is not required when starting a highway compliant diesel engine?
A. A warm up period. B. Boosting. C. Fully depressing the accelerator. D. Glow plugs.
A foundation with elements that extend to bedrock is usually termed a _____
a. reinforced foundation b. caisson foundation c. spread foundation d. deep foundation