Spell - Term Week 4 copy

Select atleast two testing devices from among the categories (you may go beyond two). Discuss its application and methods of use. a. testing for speed (Tachometer), b. Testing of Air Consumption (Air-box method/viscous-flow meter), c. testing of exhaust smoke (Bosch/Hartridge/PHS), d. testing of exhaust emission (flame ionization detector/spectroscopic analyzers/gas chromatography) e. testing of torque (absorption dynamometer/transmission dynamometer).

TRUE OR FALSE 1.) In rheology, food materials of higher viscosity have higher resistance to flow. 2.) Specific heat is the amount of heat needed to raise the temperature of a unit mass of an object one degree higher without change of phase 3.) Surface area, is related to size but also depends on particle shape. 4.) Size can be correlated with weight given that the material has more or less uniform composition. 5.) Latent heat of fusion is the amount of heat that must be removed to convert water to ice and is also the same as the amount of heat added to convert ice to water.

Distilled water at 10deg C stands in a glass tube of 9.0 mm diameter at a height of 24.00 mm. What is the true static height in mm if the surface tesnsion is 0.0742 N/m.   a.24 mm b.27.4 mm c.20.6 mm d.3.4 mm

True or False 1. Inhalation is the most common way for a chemical to enter the body. 2. The first step of caring for a worker suffering from smoke inhalation is to provide the worker with 100% oxygen. 3. The employer is responsible for developing a written permit space program and ensuring its accessibility to relevant employees and contractors. 4. Even if a smoke inhalation victim is not negatively affected in the short term, symptoms can progress at a later date and lead to illness or even death. 5. According to OSHA, the permissible noise level for an eight hour period is 90 decibels. ******************************************************************************************** Multiple Choice 6. Good ventilation is a key component in controlling workers’ exposure to: A. Airborne pathogens B. Flammable Vapors C. Chemicals D. All answers are correct 7. Which of the following situations would not require a permit? A. Walls join inward B. Contains a hazardous atmosphere C. Limited…

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Q) Air conditioning system supplies two rooms required deferent conditions. Room 1 is to be minted at 16 C° dry bu temperature and 75% saturation, by supplying air at 13 C°, whereas room 2 is to be minted at 25 C° and 45% saturation supplying air at the same moisture content as required for room one. There is a commune extract duct the ratio of fre outdoor air to rooms recirculated air be (0.2). Then the mixed air stream passes through a cooled coil which has a cont factor 0.9, then supplying to the rooms through separates heater coil. Determine: a- The mass flow rate of supplying air each room. b- Plot the psychometric chart. c- Obtain the cooler load. d- Obtain the load of each heater. Let the outdc condition is 42 C° dry bulb temperature & 25 % RH. [Room 1 (Qs=5.2 kW, Q=1.3 kW) Room 2 (Qs=4.2 kW, QL=2.8 kW

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