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18 Questions

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Semiconductor Materials and Properties

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Questions and Answers

What is the type of semiconductor material that has an excess of electrons?

Extrinsic

N-type (correct)

Intrinsic

P-type

What is the barrier potential at a silicon P-N junction?

1.0 V

0.5 V

0.7 V (correct)

0.3 V

What is the direction of current flow in a P-N junction diode?

From negative terminal to positive terminal (correct)

From positive terminal to negative terminal

In both directions simultaneously

There is no current flow

Which semiconductor material has four electrons in its outermost energy level?

All of the above Signup and view all the answers

What is the purpose of doping in semiconductor materials?

To increase conductivity Signup and view all the answers

What is the region where the P-type and N-type materials meet in a P-N junction diode?

Metallurgical junction Signup and view all the answers

What is the main advantage of vacuum tubes compared to transistors?

Highly linear without negative feedback Signup and view all the answers

What is the primary function of electronic materials?

To generate and control the flow of an electrical current Signup and view all the answers

What is a characteristic of insulators?

The atoms are tightly bound to one another Signup and view all the answers

What is a disadvantage of transistors compared to vacuum tubes?

Tendency towards higher distortion Signup and view all the answers

What is a type of electronic material that can allow or suppress electrical current flow?

Semiconductor Signup and view all the answers

What is a characteristic of good conductors?

They can be liquid Signup and view all the answers

What is the purpose of connecting the positive terminal of the voltage source to the n-type semiconductor material?

To create a non-conducting state Signup and view all the answers

What happens when the reverse-bias voltage, VR, becomes excessive?

Avalanche occurs Signup and view all the answers

What is the typical voltage range displayed on a digital multimeter when testing a silicon diode?

0.6 to 0.7 Signup and view all the answers

What is the term for the small amount of current conducted by a reverse-biased diode?

Leakage current Signup and view all the answers

What is the purpose of reversing the terminals of the meter when testing a diode?

To verify that the diode is not short-circuited Signup and view all the answers

What type of diode has a voltage range of 0.25 to 0.3 when tested with a digital multimeter?

Germanium diode Signup and view all the answers