An electrician has to pour a concrete pad for a freestanding federal Pacific 1,600-ampere switch gear. The switch gear measures 30 inches wide, 94 inches long, and 96 inches high. If the pad has to be 6 inches larger than the switch gear on all sides, how many square feet of surface area will the pad cover? Carry the answer to two decimal places.
Fill in the blank(s) with the appropriate word(s).
30.92
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Identify the major components of a kettle reboiler.
Who was the man who formulated values for plumbing water supply loads, accounting for usage diversity on the basis of the number of fixtures?
A) John Wadlow. B) Roy Hunter. C) James Watt. D) Richard Janis.
Which of the following types of transformers must be installed in a vault?
a. 10kV dry-type transformers b. 5kV askarel-insulated transformers c. 15kV nonflammable fluid-insulated transformers d. 35kV oil-insulated transformers
A piston-cylinder device contains a vapor-liquid equilibrium mixture of water at T=150 °C. The quality of the mixture is initially q=0.90 and the volume of the mixture is initially 1 m3. The vessel is compressed at constant T and P until the quality is q=0.3.
A) Determine the initial masses of the liquid and vapor phases. B) Determine the work required to complete the compression. C) Determine the change in enthalpy of the mixture.