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7. Find the answers to the questions that follow.

1. What is an electronic component?

2. Where we use an amplifier?

3. What is a transducer?

4. Why an oscillator converts direct current?

5. What is a capacitor?

6. What is a transistor?

7. How many electrodes in a vacuum tube?

8. How many terminals for connection to an external circuit has transistor?

8. Consider the following statements whether they are true or false. Find the part of the text that gives the correct information.

1. Practical resistors is a crystalline piece of semiconductor material.

2. A transistor can control its output in proportion to the input signal.

3. A semiconductor diode have a series inductance and a small parallel capacitance.

4. A resistor is used as the energy storage device in some switched-mode power supplies.

5. Inductors are common elements of electrical networks and electronic circuits.

6. Circuits and components can be divided into two groups: analog and digital.

7. Transistors convert direct current from a power supply to an alternating current signal.

8. A device that converts signals from one type to another is an amplifier.

1

2

3

4

5

6

7

8

T

T

T

T

T

T

T

T

F

F

F

F

F

F

F

F

9. Complete the following sentences using the information from the text.

1. Circuits and components can be divided into …

2. Digital circuits are electric circuits based on …

3. Oscillators convert direct current from …

4. The forms of practical capacitors vary widely, but all contain at least …

5. An inductor is typically made of a wire or other …

6. Resistors can be integrated into …

7. The most common function of a diode is …

8. The essential usefulness of a transistor comes from its ability to use …

10. Fill in the words from the list below. Use each word only once.

Inductor, system, diode, amplifier, diode, oscillators, transistor, resistors.

1. Practical … have a series inductance and a small parallel capacitance.

2. The most common function of a … allows an electric current to pass in one direction.

3. An electronic component is any physical entity in an electronic … used to affect the electrons.

4. An … is used as the energy storage device in some switched-mode power supplies.

5. The … can be used to turn current on or off in a circuit.

6 … are often characterized by the frequency of their output signal.

7. In an electronic …, the input "signal" is usually a voltage or a current.

8. A semiconductor … is a crystalline piece of semiconductor material.

11. Put these words in the right order to make sentences.

1. An / a / a / the / power / amplifier / is / device / of / for / increasing / signal.

2. Vacuum / earliest / the / electronic / tubes / one / of / were / components.

3. Converts / one / signals / to / from / another / a / type / transducer /.

4. Oscillators / convert / current / direct / current / alternating / to / an / signal /

5. Capacitors / electrical / widely / used / as / of / parts / are / circuits /.

6. An / as / is / the / inductor / storage / device / used / energy /.

7. Of / and / are / electrical / common / elements / networks / electronic / resistors / circuits /.

8. The / the / is / key / all / active / component / transistor / in / modern / electronics /.

9. The / a / a / comes / small / signal / from / of / its / to / essential / usefulness / transistor / ability / use /.