Which of the following are defined by the NEC® as separate portions of a conduit that provide access through a removable cover to the interior of the system at a junction of two or more sections?

a. Conduit bodies
b. Junction boxes
c. Pull boxes
d. Entrance ells


a. Conduit bodies

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Total sales is given by the formula: R = Q x P. What does Q represent?

A. Price per unit B. Number of customers C. Number of units sold D. Quality

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Repeat all parts of Problem 6.70 for the circuit of Figure P6.74 and the frequency response:


Use the same component values as in Problem 6.74:

Assume R1 = R2 = 2k?, C1 = C2 = 1mF.

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____ threads are the most common threads used on threaded fasteners.

A. Acme threads B. Buttress threads C. Rolled threads D. Unified threads E. none of the above

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The low form of plant life that grows in condenser water is ____________________.

Fill in the blank(s) with the appropriate word(s).

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