Using a ____ arc current setting with ____ travel speeds is important when welding stainless steel.
A. high, slower
B. high, faster
C. low, slower
D. low, faster
Answer: D
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An earthen dam breast for as low-head hydro system is a right triangular solid with a base 8 ft. wide and a height of 9 ft. The breast is 14 ft. long. The volume of the dam breast is:?
A. ?63 cu. ft. B. ?126 cu. ft. C. ?252 cu. ft. D. ?504 cu.ft.
Answer the following statement(s) true (T) or false (F)
1. Most access control systems are connected to the buildings network through a CAT 5 cable. 2. Wiring and cabling for all access control systems must comply with Article 300 of the National Electrical Code. 3. Most door and window contacts are “normally closed”. 4. The installation of class two power sources must comply with Article 725 of the National Electrical Code. 5. The type of sensing device to use in a access control systems typically depends on the layout of the building and the detail in which you need protection.
It should be noted that in a parallel circuit, the total resistance is ____ the lowest resistance in the circuit.
A. equal to B. sometimes less than and sometimes greater than C. always greater than D. always less than
Methanol is also called ________
A) Methyl hydrate B) Wood alcohol C) Methyl alcohol D) All of the above