Vacuum Tubes

IMPORTANT

Vacuum Tubes: Overview

This topic covers concepts, such as, Vacuum Tube, Structure of Vacuum Tubes, Working of Vacuum Tubes & Types of Vacuum Tubes etc.

Important Questions on Vacuum Tubes

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A vacuum tube, electron tube, valve or tube  is a device that controls electric current flow in a_______________vacuum between electrodes to which an electric potential difference has been applied.
 

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The basic working principle of a vacuum tube is a phenomenon called________________________? 

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A vacuum tube consists of two or more_____ in a vacuum inside an airtight envelope.

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A vacuum tube consists of two or more electrodes in a vacuum inside an airtight envelope. 

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In any modern-day electrical device—from alarm clocks to phones to computers to televisions—you'll find a device called a ______________________?

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Vacuum tubes are made from the materials such as_____?

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An electronic device that controls the flow of electrons in a vacuum.

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The basic working principle of a vacuum tube is a phenomenon called_____?

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The basic working principle of a vacuum tube is a phenomenon called thermionic emission. 

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What are vacuum tubes?
 

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What is vacuum tube and how does it work?
 

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How does the vacuum tube work?
 

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List the types of vacuum tube.

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What is a vacuums tube?

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A vacuums tube is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.

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What are the disadvantages of vacuum tubes?

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What is meant by vacuum tube?

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Cotyledons are also called-