Vocabulary Exercises

Text C

Text B

Unit 3. Fluid Containment

Speak Up! Discuss these questions with a partner.

Think about some appliances, machines or structures where heat transfer is an important consideration. How is this heat transferred, and how does this affect the design?

Text A

Exercise 1. One sentence in each pair is false. Choose the true sentence. Look at A and B opposite.

1. a All gas cylinders are pressure vessels. b All pressure vessels are gas cylinders

2. a Elbows are types of pipe or hose fitting. b Pipe or hose fittings are types of elbow.

3. a Any watertight tank will also be airtight. b All tanks are types of pressure vessel.

4. a A pipe is a specific sort of pipeline. b A pipeline is a specific sort of pipe.

Exercise 2. Change one word in each of the sentence below to make them correct. Look at C opposite.

1. A fan is designed to be driven by a flow of air and gas.

2. A pump used to increase the pressure in a vessel is called a turbine.

3. A safety valve is an inlet which releases excess pressure.

4. A non-turn valve is also called a safety valve.

5. Some valves can be partly closed to stop a flow, reducing its rate.

Exercise 3. Complete the sentences below with these words.

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1. Pipes are rigid tubes, made from materials such as steel and plastic, and they ______ fluids.

2. Water mains and gas mains _____ beneath the streets of cities to supply buildings.

3. Drains are underground pipes that carry waste water and they _____ gravity to allow them to flow.

4. Ducts are pipes used for moving air that is not under pressure – usually for heating or air-conditioning and ductwork often _____ rectangular cross-section ducts.

5. Pressure vessels _____ small portable gas cylinders (also called gas bottles).

6. A wind turbine _____ due to the wind, and can be used to drive a generator.

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