A steam boiler's blowdown separator helps reduce corrosion and scaling downstream and also _____
a. retards the growth of fungus in the cooling tower
b. reduces the temperature of the water being discharged
c. adjusts the amount of bleed-off for the cooling tower
d. purges gases entrained in the makeup water
b
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Answer the following statement(s) true (T) or false (F)
1. Cutoff voltage is the minimum manufacturer specified battery voltage that still results in some usable battery capacity. 2. Gassing occurs during the discharge cycle of a battery. 3. PV systems require batteries to discharge small to moderate amounts of current over longer periods of time and to be recharged under irregular conditions. 4. Batteries used in a PV system need a charge controller to prevent over-charging and over-discharging. 5. Absorption charging uses a high charging rate to bring a battery up to a state of charge of 80 to 90%.
During the welding process, the more frequently you add filler metal, the larger the weld will be.
Answer the following statement true (T) or false (F)
The two most commonly used glass-aluminum curtain wall systems are the stick-built system and the unitized system. Which of these requires less site-installation time and which has lower transportation cost in delivering the system's materials to the site?
What will be an ideal response?
The type and thickness of gypsum wallboard used in partitions is determined by _____.
a. fire rating and soundproofing requirements b. labor contract provisions c. project cost considerations d. product availability