A ground ring consisting of 20' of No. 2 bare copper must be buried no less than _____.

a. 1.5' below grade
b. 2.0' below grade
c. 2.5' below grade
d. 3.0' below grade


c. 2.5' below grade

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Describe the noise caused by an excessively worn crankshaft main bearing.

What will be an ideal response?

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Para disuadir del acceso no autorizado, las tapas de los registros de inspección deben:

a. estar selladas permanentemente. b. ir provistas de un candado o dispositivo dotado de llave. c. pesar más de 100 libras o requerir herramientas para su apertura. d. estar equipadas con un dispositivo anti-manipulación, como una alarma audible.

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The pump horsepower requirement is nearest:

Refer to the Rankine cycle with temperatures and pressures shown. Note that m = 2 kg/s of water.


A) 10 hp
B) 13 hp
C) 16 hp
D) 19 hp

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Metric thread pitch is measured in _________

A) Millimeters B) Inches C) Centimeters D) None of these

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