Voltage _______ is a pass from a negative terminal to a positive terminal
A. rise
B. potential
C. drop
D. resistance
A
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A backing weld is made after the weld on the front side of the weld joint has been made.
a. True b. False
Which of the following is an NEC® requirement for grounding and bonding cable tray installations?
a. Only single conductor cable may be used in cable trays used as equipment grounding conductors. b. Nonmetallic cable trays must be bonded with flexible bonding jumpers. c. Steel or aluminum trays may be used as equipment grounding conductors. d. Metal cable tray does not require bonding.
____ Jewish refugees from Nazism were admitted to the United States during the 1930s.
A. About one million B. Zero C. Nearly six million D. A paltry sum of about 150,000 E. Only highly educated and highly skilled
Solid-concrete construction is used in residential and commercial structures. In residences, it is mostly limited to basements and subterranean homes.
Answer the following statement true (T) or false (F)