Choose the correct answer b. the material of elbow has higher effect than the flow direction.c. both the material of elbow and the flow direction have the same effect.d. both the material of elbow and the flow direction have insignificanteffect.7. Which statement is correct?a. The cavitation in piping systems is resulted from water hammer.b. The erosion is happened due to the pressure drop.c. Water hammer and erosion are happened due to noise.d) Abrupt pressure change causes cavitation.8. The load of air ventilation is part ofa. building cooling load.b. cooling coil load.c. infiltration load.d. transmission load.9. The adiabatic efficiency of indirect evaporative efficiency isa. higher than that of direct evaporative cooling.b. lower than that of direct evaporative cooling.c. equal to that of direct evaporative cooling.d. none of the above.10. For cold storages and freezers, high water content in the producta. increases the freezing load.b. increases the pre-cooling load only.c. increases the freezing time only.d. increases the vapor generated in the space only.End of Group 2- Q5: Choose the right answer (a, b, c, or d) for each item.1. In steam jet refrigeration, cooling effect is produced bya. cooling an amount of water at high pressure.b. cooling an amount of water at low pressure.(c. evaporation an amount of water at low pressure.d. boiling an amount of water at high pressure.2. The performance factor is used for evaluating the efficiencya. of adiabatic direct evaporative cooling.b. of non-adiabatic direct evaporative cooling.c. of non-adiabatic indirect evaporative cooling.d. when the dry and wet-bulb temperature are increased.3. The wet bulb depression is influence bya. dry and wet-bulb temperatures.b. dry-bulb temperature and relative humidity.c. wet-bulb temperature and relative humidity.d. all of the above.4. In multi stages evaporative cooling systems,a. amount of sensibly cooled air is recirculated.b. amount of humid air is recirculated.c. both air streams are mixed to produce the product air.d. both air streams are completely separated.5. In piping systems, for the "T" fitting,a. pressure drop in the side branch is greater than that through straightdirection.b. pressure drop in the side branch is less than that through straightdirection.pressure drop in the side branch is equal to that through straightdirection.d. pressure drop in the side branch is insignificant.6. For the number of equivalent elbows,a. the flow direction has higher effect than the material of elbow.3

of elbow has higher effect than the flow direction. c. both the material of elbow and the flow direction have the same effect. d. both the material of elbow and the flow direction have insignificant effect. 7. Which statement is correct? a. The cavitation in piping systems is resulted from water hammer. b. The erosion is happened due to the pressure drop. c. Water hammer and erosion are happened due to noise. d) Abrupt pressure change causes cavitation. 8. The load of air ventilation is part of a. building cooling load. b. cooling coil load. c. infiltration load. d. transmission load. 9. The adiabatic efficiency of indirect evaporative efficiency is a. higher than that of direct evaporative cooling. b. lower than that of direct evaporative cooling. c. equal to that of direct evaporative cooling. d. none of the above. 10. For cold storages and freezers, high water content in the product a. increases the freezing load. b. increases the pre-cooling load only. increases the freezing time only. d. increases the vapor generated in the space only. c.

of elbow has higher effect than the flow direction. c. both the material of elbow and the flow direction have the same effect. d. both the material of elbow and the flow direction have insignificant effect. 7. Which statement is correct? a. The cavitation in piping systems is resulted from water hammer. b. The erosion is happened due to the pressure drop. c. Water hammer and erosion are happened due to noise. d) Abrupt pressure change causes cavitation. 8. The load of air ventilation is part of a. building cooling load. b. cooling coil load. c. infiltration load. d. transmission load. 9. The adiabatic efficiency of indirect evaporative efficiency is a. higher than that of direct evaporative cooling. b. lower than that of direct evaporative cooling. c. equal to that of direct evaporative cooling. d. none of the above. 10. For cold storages and freezers, high water content in the product a. increases the freezing load. b. increases the pre-cooling load only. increases the freezing time only. d. increases the vapor generated in the space only. c.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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