In residential wiring, a 12 AWG copper conductor is protected by a __________-ampere or lower OCPD.

a. 15
b. 20
c. 25
d. 30


b. 20

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Materials stocked on the scaffold should never be placed directly over the scaffolding frame.

Answer the following statement true (T) or false (F)

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Air flows in a 4-cm-diameter wet pipe at 20°C and 1 atm with an average velocity of 4 m/s in order to dry the surface. The Nusselt number in this case can be determined from Nu = 0.023 Re0.8 Pr0.4 where Re = 10,550 and Pr ?= 0.731. Also, the diffusion coefficient of water vapor in air is 2.42 × 10?5 m2/s. Using the analogy between heat and mass transfer, the mass transfer coefficient inside the pipe for fully developed flow becomes

(a) 0.0918 m/s (b) 0.0408 m/s (c) 0.0366 m/s (d) 0.0203 m/s (e) 0.0022 m/s

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The step response of an RLC circuit is given by Given that i(0) = 2 and di(0)/dt = 4, solve for i(t).

What will be an ideal response?

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To build an amplifier with a 10 K ? input impedance and a voltage gain of 41, use the ________ amplifier, Ri = ________, Rf = ________

A) inverting, 10 k?, 200 k? B) non-inverting, 40 k?, 200 k? C) inverting, 10 k?, 410 k? D) non-inverting, 10 k?, 410 k?

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