Most communicating systems are wired with four wires. They are:
A) One wire for power, one for cooling, one for heating, and one for fan.
B) Two wires for 24 V power and two for communication.
C) Communication lines 1, 2, 3, and 4.
D) Power lines 1, 2, 3, and 4.
B
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Compared to other meats, Americans eat relatively little:
A. Chicken and fish B. Beef and chicken C. Lamb and mutton D. Fish and pork
Foam in a hydraulic fluid _____
A) causes the pressure to rise B) reduces the lubricating capacity of the fluid C) improves the operation of the system D) increases viscosity
If current flow through the shunt field is interrupted, a compound wound DC motor will become a series motor and race to high speeds.
Answer the following statement true (T) or false (F)
The method of supporting cable trays using threaded rods and hanger clamps is known as _____.
a. wall mounting b. direct rod suspension c. pipe rack mounting d. center rail supports