The pipe that is most widely used for glass lining is _____ pipe.
a. carbon steel
b. PVC
c. stainless steel
d. aluminum
a. carbon steel
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The most important abbreviations for masons should be memorized.
Answer the following statement true (T) or false (F)
Answer the following statement(s) true (T) or false (F)
1. A rotating magnetic field can be produced with only one phase. 2. The current relay contains a coil with a few turns of large wire and a set of normally closed contacts. 3. All dual-voltage single-phase motors contain two sets of start windings. 4. When the current of the AC waveform increases from zero toward its positive peak, a magnetic field is created in the pole piece. 5. Single-phase synchronous motors require DC excitation current.
On a roof de-icing system, secure cables to each other using _____.
a. black duct tape b. metal straps c. UV-resistant cable ties d. vinyl electrical tape
SAE flare fittings used on hydraulic brake systems must ________
A) Have a 20-degree taper on the male and female parts of the fitting B) Be single flared C) Have no taper on the female part of the fitting D) Have a 45-degree taper on the male part of the fitting