Tag: semiconductors

Quizzes (4) Questions (79)

Questions Related to semiconductors

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Which of the following is used for the fabrication of Integrated circuits?

  1. Semiconductors

  2. Metals

  3. Insulators

  4. Alloys.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An integrated circuit is an electronic circuit formed on a small piece of semiconducting material, which performs the same function as a larger circuit made from discrete components. A semiconductor such as silicon can be controlled to conduct much or little. This allows making transistors that control each other.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Integrated circuits are preferred over conventional circuits because:

  1. They are very compact in size.

  2. They are cheap.

  3. They are fast and more efficient.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Integrated circuits are electronic circuits formed on a small piece of semiconducting material, which perform the same function as a larger circuit made from discrete components. They are compact, and cheap and fast and more efficient than conventional circuits, and hence they are preferred over them.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Which of the following is a characteristic of analog ICs?

  1. They can be used for analog input and output signals only.

  2. They cannot be used for analog input and output signals.

  3. Input signal is analog but output signal is digital.

  4. Output signal is analog but input signal is digital.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Analog circuits are circuits dealing with signals free to vary from zero to full power supply voltage. This stands in contrast to digital circuits, which almost exclusively employ 'all or nothing' signals. Both the input and output signals are analog here.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Which of the following is not a type of an IC?

  1. Analog IC

  2. Digital IC

  3. Mixed IC

  4. Compound IC
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Analog circuits are circuits dealing with signals free to vary from zero to full power supply voltage. This stands in contrast to digital circuits, which almost exclusively employ “all or nothing” signals.
A mixed integrated circuit is any integrated circuit that has both analog circuits and digital circuits on a single semiconductor device.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Which of the following applications is not based on use of ICs?

  1. Microprocessor chip.

  2. Laptops and personal computers.

  3. Mobile phones.

  4. Transformers.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Microprocessor chip, laptops and personal computer and mobiles phones, all have IC based design which makes them small and relatively cheaper.

Transformers have the conventional circuits because of their high power requirement which cannot be handled by ICs.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

The order of size of an IC is:

  1. $10^{-3} - 10^{-1} m$

  2. $10^{1} - 10^{3} m$

  3. $10^{-1} - 10^{1} m$

  4. $10^{-9} - 10^{-6} m$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An integrated circuit is an electronic circuit formed on a small piece of semiconducting material, which performs the same function as a larger circuit made from discrete components. Their main advantage is the small size of the circuit, which is of the order of $10^{-3}m$ to $10^{-1}m$.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Use of ICs has lead to an increase in speed of PCs. Current processor speeds in personal computers is of the order of:

  1. $kHz$

  2. $MHz$

  3. $GHz$

  4. $THz$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An integrated circuit is a circuit in which all or some of the circuit elements are inseparably associated and electrically interconnected so that it is considered to be indivisible for the purposes of construction and commerce. These have revolutionized the electronic industry by increasing the processing speed of computers by making them reach in order of GigaHertz.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

Integrated circuit is defined as:

  1. a single electronic circuit on a small plate of semiconductor material.

  2. a set of electronic circuits on one small plate of semiconductor material.

  3. a circuit capable of generating dc currents.

  4. a plate of semiconductor material used to connect external multiple circuits
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An 'integrated circuit' is an electronic circuit formed on a small piece of semiconducting material, which performs the same function as a larger circuit made from discrete components. It is also called a chip or microchip.

Multiple choice physics semiconductors integrated circuits & microprocessor integrated chips semiconductor devices

According to Moore's Law:

  1. The memory capacity of a chip is constant.

  2. The memory capacity of a chip doubles every one and a half-years.

  3. The memory capacity of a chip increases by ten times every one and a half-years.

  4. The memory capacity of chip decreases with time.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Moore's law states that the number of transistors in per square inch of an IC would be doubled after every two or one and a half years i.e. the memory capacity of a chip doubles every one and a half years.