Irgasheva nasiba dadajanovna mechanical english

Exercise 4
Student 1 (M): Hey, Rachel. Can we go over some points from the lecture?
Student 2 (F): Sure Brad. What did you want to cover?
Student 1: That part about laminar flow and turbulent flow confused me.
Student 2: Me too. I'm not quite sure what the difference is.
Student 1: Well, "turbulent" means that it's moving quickly and violently.
Student 2: That's right. And laminar flow is smooth.
Student 1: Yeah, I know all that. But what makes each type behave in a certain way?
Student 2: Let me check my notes. Oh, I think I get it now.
Student 1: What do your notes say?
Student 2: In turbulent flow, the fluid layers all move in different directions.
Student 1: Oh, right. So they're mixing with each other. That's what makes it so rough.
Student 2: Exactly. And in laminar flow, all the fluid flows in the same direction.
Student 1: So the layers don't mix with each other. I get it now. Now, let 's go over aerodynamics.
Unit 14
Exercise 3

Read out the directions. Allow some time for students to read the statements. Instruct students simple comprehension questions about the to mark the statements as T or F. Have students correct the false statements making them true. Ask conversation.

For example: What will happen to the machine components? (They will be under constant strain.) What other options does the engineer mention? (Carbon steel and cast iron) What would they need if they used a different material? (They
would need a different design.) What material do they decide to use? (Maraging steel).
Exercise 4
Engineer (F): Mr. Rodgers? I have the results from the materials test.
Owner (M): Great. So, what material do you recommend?
Engineer: Maraging steel performed the best. I think it will produce the strongest machine components.
Owner: What are its advantages?
Engineer: It's very durable. It can withstand fairly high tension.
Owner: That's one of the main requirements for this project, isn't it?
Engineer: Yes. The machine components will be under constant strain.
Owner: It's really expensive, though. I'm not sure if we can afford that. What else is there?
Engineer: Carbon steel and cast iron are less expensive. But they don't handle stress as well.
Owner: Would either of those work for our purposes?
Engineer: I'm not sure. They would require a different design.
Owner: Well, if the components fail, that will cost even more. Let's just go with the maraging steel