Low voltage (24 volts) will not effectively energize some of the large control components that are used in larger systems; therefore, line voltage control systems are used.
Answer the following statement true (T) or false (F)
True
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What characteristic limits the load a vacuum lifter is permitted to hoist, compared to standard hoisting devices?
a. Vacuum lifters are more expensive than other types. b. Vacuum lifters are not physically attached to the load. c. Vacuum lifters are more complicated than hook blocks. d. Vacuum lifters are made of weaker materials than other types.
Letter E is pointing to a _____.
a. hip rafter
b. valley jack rafter
c. valley rafter
d. hip jack rafter
What fasteners prevent rotary motion between two parts, such as a pulley and shaft?
A. studs B. setscrews C. bearings D. bolts
The stick-system type of curtain wall is commonly used on buildings of less than _____
a. 15 stories b. 12 stories c. 5 stories d. 3 stories