1. Which of the following is a form of anemometry?

2. For a vapor compression refrigeration operation, the enthalpies at the compressor input and output are 200 kJ/kg and 254 kJ/kg. The entropies are identical. The enthalpy at the evaporator input is 90 kJ/kg. What is the refrigeration effect (heat removed)?

3. Four states of an ideal Rankine cycle for an unknown fluid are shown in the table below. Which state corresponds to the turbine inlet conditions?

State	T(C)	P (kPa)	H(kJ/kg)	S (kJ/kg K)
1	300	1000	750	10
2	50	10	512	10
3	50	10	75	2
4	50	1000	75	2

4. Fill in the blank. A reversible, adiabatic process may also be called ________________.

5. For gas flow in a pipe, as the pressure decreases downstream the gas velocity does which of the following?

6. What is the lowest absolute pressure that can exist?

7. A fluid of density 0.83 g/cm³ and viscosity 1.8 cP flows through a 1 inch internal diameter pipe 50 m long at 80 kg/min. The roughness of the pipe is characterized by

/D = 0.005. What is the pressure drop over the entire length of pipe?

8. Calculate the Carnot coefficient of performance for a refrigeration system operating with a condenser temperature of 300°K and an evaporator temperature of 260°K.

9. In considering two pumps (1 and 2) connected in series, which of the following is true?

10. A fluid with Cp = 4 kJ/kg K enters at point 1 at 3 kg/s and 10°C. It exits at point 3 at 15°C. Another fluid with Cp = 2 kJ/kg K enters at point 4 at 90°C and leaves at point 2 at 30°C. What is the flow rate of the second fluid?

11. A centrifugal pump is used to lift water at 75 gallons per minute against a head of 175 feet of water. The efficiency of the pump is 75%. Approximately, what is the power required by the pump?

12. A centrifugal pump is used to lift water at fifty gallons per minute against a head of 75 feet of water. The efficiency of the pump is 65%. Approximately, what is the power required by the pump?

13. A reciprocating, spark ignition, engine takes in an air-fuel mixture at 20°C. It has a compression ratio of 10. The air-to-fuel ratio is 12, and the heating value of the fuel is 60,000 kJ/kg. For an air standard cycle analysis, what is the thermal efficiency? You may assume C_v is approximately 0.7 kJ/kg K and C_p/C_v is approximately 1.4.

14. Water flowing at 200 gallons per minute passes through an expansion from 2 inch internal diameter pipe to a 2.25 inch internal diameter pipe. Use Bernoulli's equation to calculate the pressure difference from immediately before the expansion to immediately after the expansion. This pressure difference is defined as the pressure before the contraction minus the pressure after the contraction.

15. You have a pump that is using 8.5 kW of power to pump water at about 450 gallons per minute against a head of 32 psi. What is the operating efficiency of the pump?

16. A fluid with Cp = 4 kJ/kg K enters at point 1 at 3 kg/s and 10°C. It exits at point 3 at 15°C. Another fluid with Cp = 2 kJ/kg K enters at point 4 at 90°C and leaves at point 2 at 30°C. It is known that the area for heat transfer is 2 square meters. What is the overall heat transfer coefficient in W/m ²K?

17. The first practical steam engine was produced about how many years ago?

18. A sharp crested, contracted, rectangular weir of length 12 ft and height 1 ft exhibits a head (h₀) of 2 inches of water. Calculate the water flow in ft³/s. Assume the head of velocity approach is small.

19. Which group describes the ratio of inertial forces to viscous forces?

20. A piece of analytical equipment employs very narrow diameter tubing to supply solvent (density = 0.9 g/cm³, viscosity = 0.78 cP) to a workstation at a flow rate of 5 ml/min. The internal diameter of the tubing is 1000
m and the length of the tubing is 75 cm. What is the pressure drop in the tubing?

21. A fluid with Cp = 4 kJ/kg K enters at point 1 at 3 kg/s and 10°C. It exits at point 3 at 15°C. Another fluid with Cp = 2 kJ/kg K enters at point 4 at 90°C and leaves at point 2 at 30°C. If the inlet temperature of the cooling fluid increases to 20°C for a few days, what do you expect the exit temperature of cooled fluid to be during that time?

22. Four states of an ideal Rankine cycle for an unknown fluid are shown in the table below. Calculate the turbine power for a fluid rate of 10 kg/s.

State	T(C)	P (kPa)	H(kJ/kg)	S (kJ/kg K)
1	300	1000	750	10
2	50	10	512	10
3	50	10	75	2
4	50	1000	75	2

23. When are water-LiBr absorption systems for cooling useful?

24. Which of the following best represents the spark-ignition automobile engine?

25. Which of the following statements about pump affinity laws is true?