32 Questions
What is the primary function of semiconductor devices?
To control voltage or current for some desired result
Which of the following is an advantage of semiconductors?
Small size and weight
Which element is suitable for electronic applications among the pure semiconductor elements?
Germanium
What are the disadvantages of semiconductors?
Great susceptibility to changes in temperature
What color is germanium, a pure semiconductor element suitable for electronic applications?
Grayish-white
What was silicon discovered in 1886?
False
What is the most commonly used semiconductor material?
Silicon
In which year was silicon discovered?
1823
Why are active materials not stable?
Because they possess incomplete valence shell
How does covalent bonding in silicon atoms occur?
By sharing valence electrons
What does the covalent bond in pure silicon crystals result in?
Insulating properties at room temperature
What happens to the resistance of silicon crystals as the temperature increases?
It decreases
How do electrons in silicon crystals behave when heat energy is applied?
They absorb the energy and move to a higher orbit
How many valence electrons does a silicon atom have?
8
What is an indication of an atom's ability to gain or lose electrons?
Valence
'Semiconduction' refers to which material property?
Electrical conductivity between insulators and conductors
What is the primary reason for using semiconductors in electronic equipment?
To control voltage or current for some desired result
What are the main advantages of semiconductors over other materials?
Instant operation when power is applied
Which of the following elements are suitable for electronic applications as pure semiconductors?
Germanium (Ge)
What are the disadvantages of semiconductors mentioned in the text?
Extra components required for stabilization and easily damaged by excessive power limits
What color is germanium, a pure semiconductor element suitable for electronic applications?
Brittle grayish-white
What are the characteristics of semiconductor materials according to the text?
Characteristics that fall between those of insulators and conductors
What is the primary process by which germanium dioxide is converted to pure germanium?
Reduction
What is the most commonly used semiconductor material?
Silicon dioxide
What is the indication of an atom’s ability to gain or lose electrons and determines its electrical and chemical properties?
Valence
How many valence electrons does a silicon atom have?
8
What property makes active materials referred to as unstable?
Need for additional electrons for stability
What happens to the resistance of pure silicon crystals as the temperature increases?
It decreases by half for every 6 degrees Celsius rise in temperature
What process occurs in pure silicon crystals when heat energy is applied?
Some electrons absorb energy and move to a higher orbit, allowing the crystals to support current flow
What does covalent bonding in silicon atoms result in?
Formation of stable crystals
'Semiconduction' refers to which material property?
'Negative temperature coefficient'
Which of the following materials is chemically reduced to produce pure silicon?
Silicon dioxide
Test your knowledge of semiconductor fundamentals, including diodes, transistors, and integrated circuits. Learn about the advantages and primary functions of these semiconductor devices.
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