1.Read the textbook excerpt. Then, choose the correct answers.
1. What is the chapter mainly about?
A. different types of rate processes
B. how to create a cost-effective rate process
C. a type of system that uses a rate process
D. ways to improve efficiency of rate processes
2. What happens if the driving force is too high?
A. Water does not pass through the screens.
B The inlet becomes backed up.
C. The pressure decreases.
D .The viscosity of the water changes.
3. Which does NOT determine flow rate?
A. pressure
B. pipe diameter
C. viscosity
D. flux
2.Match the words (1-8) with the definitions
1.inlet 5.driving force
2.flux 6.viscosity
3. rate 7. Process
4.outlet 8.pressure
A. force per unit of applied to an object
B. a place where can exit something else
C. the measurement of a quantity, such as frequent applied over another quantity
D. the power that causes an object to start or continue moving
E. the measure of a liquid’s resistance to being deformed
F. a place where something can enter something else
G. a process with results that depend on the movement of different variables
H. the amount of something that passes through an area over a given time.
3.Listen to a conversation between two mechanical engineers. Mark the following statements as true (T) or false (F).
1.The flow rate is too high.
2.The man suspects that fluid viscosity is causing the problem.
3.The pressure is building up at the pump's outlets.
4. Listen again and complete the conversation.
Engineer 2: For some reason, it's not maintaining the correct 1_______________.The water movement is not fast enough.
Engineer 1:That's strange. Do you have2 ____________ why that's happening?
Engineer 2; First, I want to check 3 _____________of the fluid.
Engineer 1: That's a good idea. If 4__________________ the pump might not work right.
Engineer 2: Exactly. 5___________________ tested the pump with the wrong kind of liquid.
Engineer1: Hopefully we can 6. Is that the only problem we're having?
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