The wiring methods allowed for underground service entrance installations are listed in Section 230.30(B). They include rigid metal conduit (RMC), intermediate metal conduit (IMC), __________, and USE conductors or cables.
a. rigid PVC conduit (PVC)
b. Type NM cable
c. Type AC cable
d. electrical metallic tubing (EMT)
a. rigid PVC conduit (PVC)
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In an inductive AC circuit, when the applied voltage is at its maximum negative value, the current is _____.
a. zero b. increasing toward maximum positive c. at the maximum negative value d. at the maximum positive value
A gene pair is considered homozygous if it:
a. carries two of the same genes for a trait c. carries only one gene for a trait b. carries two different genes for a trait d. carries no genes for a trait
The difference between the minimum and the maximum operating points within that a control will function accurately is known as:
A) Spread. B) Differential. C) Setpoint. D) Range.
In testing DIACs with an ohmmeter, ____ resistance in either direction indicates that the device is not opened (defective).
A. zero B. high C. low D. infinite