Answer the following statements true (T) or false (F)
1 Shift supervisors are responsible for maintaining oil levels, changing system filters, and adding grease to bearings.
2 One BTU is equivalent to 252 calories.
3 Thermal shock and overheating of fouled tubes can result in ruptured and/or melted tubes.
4 Backwashing requires specialized training to perform.
5 Cooling towers are designed to raise the temperature of a water stream.
1 False. Natural draft cooling towers, which are most frequently seen in nuclear and coal-fired power plants, use temperature differences inside and outside the stack to facilitate air movement.
2 False. The process of evaporation is much more efficient than convection at removing heat.
3 True.
4 True.
5 False. Industrial furnaces are operated at negative pressure, not positive pressure.
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What will be an ideal response?
GMAW is almost free from spatter because it uses a mode of metal transfer called ____________________ metal transfer.
Fill in the blank(s) with the appropriate word(s).
Determine the pressure of the system and the equilibrium constant for the reaction.
A reaction A+B?C+D occurs in the liquid phase at 298.15 K. A vapor phase is also present, but no reaction occurs in the vapor phase. The liquid is an ideal solution and the vapor is an ideal gas. Vapor pressures are 0.12 MPa for compound A, 80kPa for compound B, 0.15 MPa for compound C and 70kPa for compound D. At equilibrium the liquid phase consists of 36 mol% A, 33 mol% B, 11 mol% C and 20 mol% D. A. P = 0.42MPa; KT = 5.4 B. P = 0.42 MPa; KT = 0.185 C. P = 0.1 MPa; KT = 5.4 D. P = 0.1 MPa; KT = 0.185 E. Solution not possible with information given
For the network illustrated in Fig. 14.85, find
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