A branch connection that is welded into an opening that has been cut into a straight length of pipe is a _____.
a. tee
b. saddle
c. lateral
d. cross
b. saddle
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Answer the following statement(s) true (T) or false (F)
1. Line diagrams include all of the devices in the system and show the physical relationships between the devices. 2. The control circuit consists of the main contacts and the overload heaters to the motor. 3. Three-wire control prevents the restarting of machinery when power is restored. 4. Motors draw half as much current on high voltages as they do on low voltages. 5. Throttle valves and narrow pipes can waste huge amounts of power.
Solid forms of ice last longer because there is more weight with less surface area.
Answer the following statement true (T) or false (F)
Which of the following is NOT part of the hazard warning lamp circuit?
A) Flasher unit B) Head lamps C) Turn signal lamps D) Instrument panel
With a square wave applied to a series RC circuit, which equation is incorrect?
A) VR = VS - VC B) VR = VS + VC C) VS = VR - VC D) VC = VS + VR