Three-phase motors must have an overload sensor (heaters or magnetic coils) in two of the three-phase lines.
Answer the following statement true (T) or false (F)
False
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Single-line drawings are generally used to show pipe layouts for nominal pipe sizes of less than ____ inches.
A. 8 B. 10 C. 12 D. 14
1.5 kg of air is initially at 200 kPa and 30oC in an expandable container. The air is heated so that it expands following the relationship PV1.2 = constant. The container also holds a fan which adds a total of 50 kJ of work to the system during the process. The pressure at the end of the process is 100 kPa.
(a) Determine the final volume of the air, the final temperature, and the amount of heat transfer during the process. (b) Develop a computer model for this problem, and plot the final volume, final temperature, and the amount of heat transfer during the process for final pressures ranging between 50 kPa and 190 kPa. Given: Air; m = 1.5 kg; P1 = 200 kPa; T1 = 30oC = 303 K; Wrs = -50 kJ; P2 = 100 kPa; PV1.2 = constant. Assume: ?KE = ?PE = 0. Air is an ideal gas (R = 0.287 kJ/kg-K). What will be an ideal response?
Some starter tests are done on an engine that still cranks over.
Answer the following statement true (T) or false (F)
Organic soil is the result of a buildup of ____________________ materials
Fill in the blank(s) with correct word