List the requirements that permit rigid metal conduit to be installed directly in the soil for underground raceways.
What will be an ideal response?
Rigid metal conduit can be installed directly in the soil if:
| ? | ferrous conduits (iron or steel) do not rely solely on enamel for corrosion protection; |
| ? | the conduit is made of a material judged suitable for the condition; and |
| ? | the conduit is not placed in an excavation that contains large rocks, paving materials, cinders, large or sharply angular substances, or corrosive material. |
You might also like to view...
Using the rational formula, determine the runoff rate for a storm of 100-year frequency. Use Table 16.2 for runoff coefficients. Assume that the rainfall intensity curves in Figure 16.2 are applicable to this drainage area and the following land characteristics apply. Use Figure 16.4 to calculate average velocity using "fallow or minimum tillage cultivation" ground cover. Overland flow length = 0.5 miles. Average slope of overland area = 2%
A 196-acre rural drainage area consists of four different watershed areas as follows: Steep grass covered area = 35% Cultivated area = 15% Forested area = 40% Turf meadows = 10% What will be an ideal response?
After servicing a system using bolt-on piercing valves, the technician should:
A) Remove the bolt-on valve and quickly braze up the hole. B) Recover the refrigerant, remove the bolt-on valve and replace it with a permanent valve. C) Close the bolt-on valve, remove the gauges, and put on the valve cap. D) Simply remove the gauges because most bolt-on valves are self-sealing.
When the not-Q outputs of flip-flops are connected to the next inputs, which kind of counter is formed?
A) Johnson counter B) synchronous counter C) down counter D) up counter
During operation, the ___________ ___________ is used to pull the piston back into its bore.
Fill in the blank(s) with the appropriate word(s).