In hazardous locations where threaded metal conduit is required, threaded joints must be made up with at least how many threads fully engaged?
a. 2
b. 3
c. 4
d. 5
d. 5
Trades & Technology
You might also like to view...
Refer to Figure 1.A below multi-tap transformer has 1,620 turns in the primary. There are 40 turns between each tap. Taps 6 and 3 are connected. Which taps must be connected to reduce output voltage by 5%?
a. 5 and 4
b. 6 and 2
c. 7 and 4
d. 7 and 2
Trades & Technology
According to the figure above, a drain line with a diameter of 8 inches and a slope of 1/8 inch per foot can handle _____.
a. 1,600 DFUs b. 1,800 DFUs c. 2,100 DFUs d. 2,300 DFUs
Trades & Technology
The total voltage in a circuit with voltage drops of 15V, 25V, and 20V is _____.
a. 20V b. 60V c. 120V d. 180V
Trades & Technology
The synchronous speed of the magnetic field depends on the frequency of the three-phase voltage and the number of ____________________.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology