The purpose of a sealing fitting is to _____.
a. carry wires through conduit and other types of raceways
b. bundle wires and cables together
c. connect conduit to boxes
d. minimize the passage of gases, vapors, and flames through a conduit
d. minimize the passage of gases, vapors, and flames through a conduit
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An alkaline soil contains 20% clay and 3% humus. If the pure clay has a CEC of 40 cmolc/kg and the humus 200 cmolc/kg, calculate the CEC/kg of the soil
A) 12 B) 16 C) 8 D) 30 E) 14
Which of the following motors is the best installation choice for an application requiring adjustable speeds?
a. DC b. Split-phase c. Synchronous d. Capacitor-start
During an EEG, alpha waves
A) are observed in children and frustrated adults. B) are observed in many pathological conditions. C) typically accompany intense concentration. D) occur in deep sleep. E) are characteristic of normal resting adults.
A sheet metal screw holding a metal body panel has pierced the insulation of a wire and is touching the copper wire. This is known as a ________
A) Short to power B) High resistance C) Short to ground D) None of these