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?
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.
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
Metric thread pitch is measured in _________
A) Millimeters B) Inches C) Centimeters D) None of these