3. The Bureau of Labor Statistics collects input and output data from various countries for comparison purposes. Labor hours are the standard measure of input. Calculate the output per hour from the following data. Which country is most productive?

1. What air distribution? State the goals of air distribution of air conditioned buildings?

6. State the method of duct sizing methods? When each method used? What the advantages and disadvantages of each type?

10. Which of the following is used to simultaneously measure static pressure and velocity pressure? a. Anemometer b. Hydrostat c. Pitot tube d. Voltmeter

8. Failure of room ventilation air to mix well due to layering is called: a. Zone effect b. Diffusion c. Stratificationс. d. Induction

4. Which of the following is not a toxic pollutant а. ОЗ b. Radon c. CO2 d. CO

3. A goal of an air distribution and ventilation system is: a. Maintain temperature and humidity within desired ranges b. Reduce contaminants c. Control noise d. Blend with the interior design e. All of the above

4. define the following: a. static pressure b. velocity pressure c. total pressure d. What the usages of, continuity's low and Bernoulli's low?

- GRD refers to: a. Duct termination fixtures b. Registers c. Diffusers d. Grills e. All of the above

1. Explain good engineering practices during choosing duct fitting and duct transitions? How dampers velocity controlled?

2. What is meant by human environmental comfort/ what it includes? State it standard values?

2. Squirrel cage refers to: a. Damper b. Centrifugal blower c. Axial fan d. Diffuser

5. State different types of duct sheet metal gauges? What the meant by aspect ratio?

1. What compound makes up the largest component of air? a. Oxygen b. Nitrogen c. Ozone d. Argon e. Pollution