Microprocessor MCQ Quiz & Online Test: Below is few Microprocessor MCQ test that checks your basic knowledge of Microprocessor. a. Explanation:- The resistivity of semiconductors varies from 10−5 to 10+4 ohm-meter as compared to the values ranging from 10−7 to 10−6 ohm-meter for conductors and from 107 to 108 ohm-meter for insulators. Each atom that is normally bonded with the nearest neighbor atoms results in a special shape called a crystal (Fig). When an electron moves from the valence band into the conduction band, it leaves behind a vacant site, called a hole, in the otherwise filled valence band. Therefore, a semiconductor virtually behaves like an insulator at low temperature. _____ is the separate memory area provided in graphics workstations. Thus conductors have a positive temperature coefficient of resistance. The corresponding crystal structure along with the energy band structure is as shown in Fig. When an electron moves from the valence band into the conduction band, it leaves behind a vacant site, called a hole, in the otherwise filled valence band. Therefore, the net effect can be viewed as the hole migrating through the material in the direction opposite the direction of electron movement. The solved questions answers in this Test: Basic Of Semiconductor quiz give you a good mix of easy questions and tough questions. The atoms in a crystal are arranged so closely that electrons orbit in valence shells of two atoms. Silicon carbide has been used to create blue light-emitting diodes (LEDs), and it can withstand high operating temperatures. A silicon atom that is a part of a crystal has eight electrons in the valence orbit and four neighbor atoms. These free electrons create a vacancy in its initial position in the crystal. It is the most commonly used material after silicon; however, it is more expensive and more difficult to manufacture. These questions & … When the temperature of the crystal is raised, external energy in the form of heat gets applied to the semiconductor material. Explanation:- Answer.1. This reduces drift speed of electrons (and thus current reduces). This heat energy enables the valence electrons to acquire sufficient energy to break away from the atoms and become free electrons. As a result, breakage of covalent bonds takes place releasing free electrons. At absolute zero temperature, there will be no free electrons in the crystal. In a pure semiconductor the four valence electrons of the crystal atom form covalent bonding and at low temperatures, free electrons are not available for conduction of electricity. Read Only Memory ROM MCQs: 149 Multiple Choice Questions. Silicon is the most widely used semiconductor material because it has a useful temperature range and is abundant, cheap, and easy to manufacture. Whenever an electron does so, it creates a new hole at the site it abandoned. These memories are bought in a blank format and they are programmed using a special PROM programmer . When an electron leaves to become free, it leaves a vacant space called a hole. Explanation:- Show Explanation It has 14 protons and 14 electrons in orbits. These MCQs are very helpful for the preparation of academic & competitive exams ... 8. As a result, no free electrons are available for conduction and it acts as an insulator. 14 C. 29 D. 16 Ans = B 9. This shows that electrical conductivity of a semiconductor increases with the increase of temperature, i.e., a semiconductor has a negative temperature coefficient of resistance. At low temperature, the valence band of a semiconductor is completely filled and the conduction band is completely empty. Keyboard B. Silicon is the most widely used semiconductor material. 60 Ω cm. or The band formed by a series of energy levels containing the valence electrons is known as valence band. According to this principle, not more than two electrons with different spins can occupy each energy state. Ques.4. Explanation:- A semiconductor atom having four valence electrons and four holes require four more electrons so as to make the outermost orbit completely filled (total number must be eight). Semiconductor memory is a digital electronic semiconductor device used for digital data storage, such as computer memory.It typically refers to MOS memory, where data is stored within metal–oxide–semiconductor (MOS) memory cells on a silicon integrated circuit memory chip. 2 b. For ease of understanding, only the outermost orbits of atoms have been shown. The main memory elements are nothing but semiconductor devices that stores code and information permanently. Answer.4. Here I am sharing various types of mcq on computer memory because many students are confused to solve multiple choice questions on computer in the examination. Silicon Semiconductor materials lie in the range between these two extremes, as shown in Fig. Because the thermal excitation of electrons across the narrow gap is more probable at higher temperatures, the conductivity of semiconductors increases rapidly with temperature, contrasting sharply with the conductivity of metals, which decreases slowly with increasing temperature. At low temperature, the valence band of a semiconductor is completely filled and the conduction band is completely empty. Semiconductor Electronics: Materials, Devices and Simple Circuits Class 12 Physics MCQs Pdf. 1. Students can solve NCERT Class 12 Physics Semiconductor Electronics: Materials, Devices and Simple Circuits MCQs Pdf with Answers to know their preparation level. Explanation:- Ques.1. The energy gap of the conductor is 0 eV. C. somewhat larger than the magnetic core memory. B. a volatile memory. The resistivity of pure germanium under the standard condition is about. Answer.1. This Microprocessor Test contains around 20 questions of multiple choice with 4 options. C Magnetic memory. The valence band may be partially or completely filled up depending upon the nature of the crystal. A. 7 em and for silicon 1.1 em The band structure of a semiconductor is shown in Figure. Answer.2. A semiconductor is formed by __________ bonds. This shows that electrical conductivity of a semiconductor increases with the increase of temperature, i.e., a semiconductor has a negative temperature coefficient of resistance. Answer.4. However, although the electrons are bound to their atoms due to covalent bonding, a rise in temperature breaks some of the covalent bonding and make some electrons free. High-speed semiconductors widely use gallium-arsenide. N-type Semiconductor. These bands are separated by a forbidden energy gap. Computer Graphics MCQ Multiple Choice Questions with Answers. Home >> Category >> Electronic Engineering ... With the availability of 16 x 4 memory size, how many ICs ( memory chips) will be required for the expansion of its word size in order to obtain 16 x 8 memory? SPICE The Following Section consists of Multiple Choice Questions on Semiconductor Principles. In the figure, atoms of silicon material have been shown. When the temperature of the crystal is raised, external energy in the form of heat gets applied to the semiconductor material. Whenever an electron does so, it creates a new hole at the site it abandoned. Each of the four neighbors shares one electron. Multiple Choice Questions on Resistance and Power. According to this principle, not more than two electrons with different spins can occupy each energy state. Semiconductors are neither conductors nor insulators. You have to select the right answer to a question. 4 c. 8 d. 16. Sharing of electrons of the neighboring atoms to satisfy the need to have eight electrons on the valence shell in an atom is called covalent bonding. The resistivity of a semiconductor ____________ conductors and insulators. However, at room temperature, some electrons cross over to the conduction band giving a little conductivity to the semiconductor. Thus the covalent bond is formed by sharing of electrons between similar atoms. When an electron leaves to become free, it leaves a vacant space called a hole. Which have zero energy gap. The forbidden energy gap for germanium is 0. Ques.6. Explanation:- B Memory register. D None of above. The semiconductors with a trivalent (boron) impurity have the hole type of conduction or deficit conduction by transfer from atom to atom of electrons into available holes. is being pulled in opposite directions, it is a kind of a bond between the opposite cores. Note:- The energy gap of an insulator is 5 eV D. All of … When the temperature of the crystal is raised, external energy in the form of heat gets applied to the semiconductor material. Because the Fermi level is located near the middle of the gap for a semiconductor and Energy gap Eg is small, appreciable numbers of electrons are thermally excited from the valence band to the conduction band. Compact Disc-Read-Only Memory, a type of optical disk capable of storing large amounts of data -- up to 1GB, although the most common size is 650MB (megabytes). At room temperature (T> 0 K), the valence electron acquires a sufficient amount of thermal energy. Pure silicon has a considerably higher resistivity, in the order of 60,000 Ω cm. Since each shared electron in Fig. This vacancy is known as a hole and is assumed to carry a positive charge equivalent to the charge of the electron. Because the Fermi level is located near the middle of the gap for a semiconductor and Energy gap Eg is small, appreciable numbers of electrons are thermally excited from the valence band to the conduction band. A semiconductor atom having four valence electrons and four holes require four more electrons so as to make the outermost orbit completely filled (total number must be eight). D. Which are available locally Covalent Intrinsic semiconductors are those. Note:- The energy gap of an insulator is 5 eV. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor Whereas in the case of conductors, when the temperature increases its resistivity increases as electrons collide more frequently with vibrating atoms. Memories in which any location can be reached in a fixed (and short) amount of time after specifying its address is called (a) sequential-access memory 13 / 27 The forbidden energy gap for germanium is 0. Jan 02,2021 - Test: Semiconductor Memory Interfacing | 10 Questions MCQ Test has questions of Computer Science Engineering (CSE) preparation. As the temperature is increased more valence electrons cross over to the conduction band and conductivity increases. Germanium was among the first semiconductor materials to be developed and is less widely used than silicon, but it is useful in very high-speed devices when alloyed with silicon. Definition: Semiconductor memory is the main memory element of a microcomputer-based system and is used to store program and data. Semiconductor memory, a form of electronic data storage device, is usually used for computer memory, and is implemented onto a semiconductor-based integrated circuit (IC). Each valence shell electron fills the hole of the neighboring atom as shown in Fig. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Which is a semi conductor memory? Show Explanation A.Which are made of semiconductor material in its purest form, 2. Ques.2. Electrons occupy the lowest energy levels first. Charge carriers in a semiconductor can be negative, positive, or both. The atoms in a crystal are arranged so closely that electrons orbit in valence shells of two atoms. Whereas in the case of conductors, when the temperature increases its resistivity increases as electrons collide more frequently with vibrating atoms. Because of covalent bonding, i.e., bonding through sharing of electrons, it is seen that the valence shells of all the electrons are full, i.e., all of them have eight electrons in their outermost orbit. These free electrons, due to acquiring of sufficient thermal energy, cross the energy gap and enter into the conduction band from the valence band and occupy the energy levels in the conduction band. A single CD-ROM has the storage capacity of 700 floppy disks, enough memory to store about 300,000 textpages. The resistivity of semiconductors varies from 10−5 to 10+4 ohm-meter as compared to the values ranging from 10−7 to 10−6 ohm-meter for conductors and from 107 to 108 ohm-meter for insulators. In a semiconductor, the energy gap between the valence band and conduction band is about________, Show Explanation Show Explanation However, at room temperature, some electrons cross over to the conduction band giving a little conductivity to the semiconductor. The lower energy bands with mostly filled energy states are called the valence bands. The strength of a semiconductor crystal comes from______. A directory of Objective Type Questions covering all the Computer Science subjects. The valence band may be partially or completely filled up depending upon the nature of the crystal. It is the most commonly used material after silicon; however, it is more expensive and more difficult to manufacture. Ques.3. Good conductors, such as silver, copper, and aluminum, have large numbers of free electrons; their resistivities are of the order of a few millionths of an ohm-centimeter. Semiconductor Memories MCQs: 42 Multiple Choice Questions. Somewhat large than the magnetic core memory b. a. In a pure semiconductor the four valence electrons of the crystal atom form covalent bonding and at low temperatures, free electrons are not available for conduction of electricity. Multiple Choice Questions - ... MCQS WITH SOLUTION PCS/CSS/IT EXPERT FPSC 2011; Semiconductors have the same type of band structure as an insulator; but the energy gap is much smaller, on the order of 1 eV. Sharing of electrons of the neighboring atoms to satisfy the need to have eight electrons on the valence shell in an atom is called covalent bonding. For every free electron, there will be a corresponding hole produced, which is called an electron-hole pair. A semiconductor has ____________ temperature coefficient of resistance. A. Multiple Choice Questions and Answers on Semiconductor Diode. Thus the covalent bond is formed by sharing of electrons between similar atoms. The difference between the highest valence band and the lowest conduction band is called the energy band gap or the energy gap. Pure germanium has a resistivity of 60 Ω cm. An electron in a valence band needs the exert equal to or higher than the energy gap to experience a transition from the valence to the conduction band. At T = 0 K, all electrons in these materials are in the valence band and no energy is available to excite them across the energy gap. Because of the many empty levels above the thermally filled levels in the conduction band, a small applied potential difference can easily raise the energy of the electrons in the conduction band, resulting in a moderate current. Ques.10. Therefore, the net effect can be viewed as the hole migrating through the material in the direction opposite the direction of electron movement. These free electrons create a vacancy in its initial position in the crystal. An isolated silicon atom has four electrons in the valence bond. Can't read the image? Multiple Choice Questions on Alternating Current vs Direct Current . As used in semiconductor devices, however, these materials contain carefully controlled amounts of certain impurities, which reduce their resistivity to about 2 Ω cm at room temperature and this resistivity decreases rapidly as the temperature rises. Good conductors, such as silver, copper, and aluminum, have large numbers of free electrons; their resistivities are of the order of a few millionths of an ohm-centimeter. Show Explanation The lower energy bands with mostly filled energy states are called the valence bands. Silicon is the most widely used semiconductor material because it has a useful temperature range and is abundant, cheap, and easy to manufacture. Crystal. In each energy band, allowed energy levels are very close to each other, and the electron energy can vary continuously. Check important MCQs (with answers) for CBSE 12th Physics Board Exam 2020 (Chapter 13, Semiconductor Electronics: Material, Devices & Simple Circuits). Pure silicon has a considerably higher resistivity, in the order of 60,000 Ω cm. When an electron leaves to become free, it leaves a vacant space called a hole. Contact us: info@mechanicaltutorial.com, Which are made of semiconductor material in its purest form, There is no recombination of electrons with holes, Drift velocity of free electrons is very small, Free electrons are not available for current conduction, Energy possessed by electrons at that low temperature is almost zero, Its crystal has much stronger bonds called ionic bonds, Its valence electrons are more tightly bound to their parent nuclii. These free electrons, due to acquiring of sufficient thermal energy, cross the energy gap and enter into the conduction band from the valence band and occupy the energy levels in the conduction band. D None of above. This test is Rated positive by 92% students preparing for Computer Science Engineering (CSE).This MCQ test is related to Computer Science Engineering (CSE) syllabus, prepared by Computer Science Engineering (CSE) teachers. C Magnetic memory. Which of the following is a read only memory storage device? When a pure semiconductor is heated, it’s resistance_______. The hole behaves as if it were a particle with a positive charge +e. 6 × 104 Ω cm. Which of the following is a semi-conductor, 5. is being pulled in opposite directions, it is a kind of a bond between the opposite cores. As used in semiconductor devices, however, these materials contain carefully controlled amounts of certain impurities, which reduce their resistivity to about 2 Ω cm at room temperature and this resistivity decreases rapidly as the temperature rises. Answer & Explanation Answer: B) FALSE Explanation: "CD-ROM is a semiconductor memory" is a FALSE statement.. Semiconductor materials lie in the range between these two extremes, as shown in Fig. When atoms form solids, their electron energy states split into many close energy levels that form allowed energy bands. 21. Pure germanium has a resistivity of 60 Ω cm. Ques.8. The covalent bonds hold the tetravalent crystal together, ensuring its stability. Therefore, semiconductors are poor conductors at very low temperatures. As used in semiconductor devices, however, these materials contain carefully controlled amounts of certain impurities, which reduce their resistivity to about 2 Ω cm at room temperature and this resistivity decreases rapidly as the temperature rises. here available fundamental mcq questions for ccc exam, you can learn lots of questions in this section and also practice online test. These computer memory questions and answers are very important for bank exams and other competitive exams.- Page 21 It is a semiconductor memory which can only have data written to it once – the data written to it is permanent. Lies between that of Which are made of semiconductor material in its purest form. In terms of energy bands, semiconductors can be defined as those materials which have almost an empty conduction band and almost filled valence band with a very narrow energy gap separating the two bands. Each of the four neighbors shares one electron. Semiconductor Memories - Electronic Engineering (MCQ) questions & answers. This hole (electron-deficient site) acts as a charge carrier in the sense that a free electron from a nearby site can transfer into the hole. CCC MCQ - English . Answer : D. Free Online Test . A) System memory B) Display processor memory ... 16. A semiconductor atom having four valence electrons and four holes require four more electrons so as to make the outermost orbit completely filled (total number must be eight). Answer.2. Semiconductors Ques.9. Insulators such as glass, rubber, and mica, which have very few loosely held electrons, have resistivities as high as several million ohm-centimeters. The ability of a material to conduct current is directly proportional to the number of free electrons in the material. A large number of such electron-hole pairs are formed due to rise in temperature of the semiconductor. In each energy band, allowed energy levels are very close to each other, and the electron energy can vary continuously. A semiconductor in which the conduction is due to holes referred to as a p-type semiconductor. Practice these MCQ questions and answers for preparation of various competitive and entrance exams. The electrons leaving the valence band create holes in its place. The covalent bonds hold the tetravalent crystal together, ensuring its stability. CD-ROM is a a) Semiconductor memory b) Memory register c) Magnetic memory d) All of the above e) None of the above 60 Ω cm Typical data transfer rate in LAN are of the order of ... MCQ Multiple Choice Questions and Answers on Computer Basics. Because there are so few electrons that are mobile at room temperature, only a small amount of current will flow through the semiconductor at room temperature.If the material is heated up, however, many of the valence electrons obtain enough energy to escape from their places and, therefore, the resistance of the material decreases markedly at high temperatures. For every free electron, there will be a corresponding hole produced, which is called an electron-hole pair. Dynamic B. Static C. Bubble D. Both a & b 2-2. The atoms in a crystal are arranged so closely that electrons orbit in valence shells of two atoms. Answer.1. At 0 K, all valence electrons are strongly bound to their atoms and are actively participating in the covalent bond formation. Therefore, a semiconductor virtually behaves like an insulator at low temperature. Each valence shell electron fills the hole of the neighboring atom as shown in Fig. Pure silicon has a considerably higher resistivity, in the order of 60,000 Ω cm. Explanation:- 3 × … Answer.2. As a result, no free electrons are available for conduction and it acts as an insulator. In semiconductors and dielectrics, almost all the states in the lowest energy bands are filled by electrons, whereas the energy states in the higher energy bands are, by and large, empty. A non-volatile memory c. Somewhat slower than magnetic core memory d. All of above e. None of these Answer = B Explanation: Semiconductor memory is an electronic storage device often used as computer memory. Charge carriers in a semiconductor can be negative, positive, or both. Explanation:- Basic Computer Fundamental Introduction to Windows Basic DOS Commands Elements of Word Processing Spreadsheets ... A Semiconductor memory. High-speed semiconductors widely use gallium-arsenide. Semiconductor memory is: A. somewhat slower than magnetic core memory. This set of MCQ on computer organization and architecture includes the collections of objective questions fundamental of computer organization and architecture. Ques.5. Negative In semiconductors and dielectrics, almost all the states in the lowest energy bands are filled by electrons, whereas the energy states in the higher energy bands are, by and large, empty. Because of the many empty levels above the thermally filled levels in the conduction band, a small applied potential difference can easily raise the energy of the electrons in the conduction band, resulting in a moderate current. Semiconductors have the same type of band structure as an insulator; but the energy gap is much smaller, on the order of 1 eV. Crystal. This heat energy enables the valence electrons to acquire sufficient energy to break away from the atoms and become free electrons. Each atom that is normally bonded with the nearest neighbor atoms results in a special shape called a crystal (Fig). Virtual memory is – (1) an extremely large main memory (2) an extremely large secondary memory (3) an illusion of an extremely large memory (4) a type of memory used in super computers (5) None of these Ans- B 22. Ques.7. This reduces drift speed of electrons (and thus current reduces). The important property of electrons is determined by the rule that is called the Pauli exclusion principle. The atoms in a crystal are arranged so closely that electrons orbit in valence shells of two atoms. Explanation:- Semiconductors are those materials which have electrical conductivities lying between those of good conductors and insulators. As a result, breakage of covalent bonds takes place releasing free electrons. Set 1; Set 2 ) ) Post navigation. A semiconductor material, silicon or germanium where the electrons are bound to their respective atoms and are not free to conduct electric current, are called intrinsic, or pure semiconductors. 1eV Because there are so few electrons that are mobile at room temperature, only a small amount of current will flow through the semiconductor at room temperature.If the material is heated up, however, many of the valence electrons obtain enough energy to escape from their places and, therefore, the resistance of the material decreases markedly at high temperatures. Show Explanation Germanium was among the first semiconductor materials to be developed and is less widely used than silicon, but it is useful in very high-speed devices when alloyed with silicon. Floppy Disk B. CD-ROM C. Hard Disk D. None of these 2-3. This type of bond is known as a covalent bond. Which computer memory is used for storing programs and data currently being processed by the CPU? The commonly used semiconductor elements are silicon, germanium, and gallium arsenide. Show Explanation The higher energy bands with mostly empty energy states are called conduction bands. computer fudamental mcq questions in english:- student ! or The band formed by a series of energy levels containing the valence electrons is known as valence band. 1. Show Explanation A semiconductor generally has ____________ valence electrons. C. Which have more electrons than holes. There are numerous different types using different semiconductor technologies. 32 B. Semiconductors are those materials which have electrical conductivities lying between those of good conductors and insulators. The important property of electrons is determined by the rule that is called the Pauli exclusion principle. Each valence shell electron fills the hole of the neighboring atom as shown in Fig. 2) Semiconductor memory is-a. Germanium has 32 protons, 32 electrons, and 4 valence electrons like silicon. C. P-type semiconductor D. N-type semiconductor Ans = D 8. However, although the electrons are bound to their atoms due to covalent bonding, a rise in temperature breaks some of the covalent bonding and make some electrons free. ... A Semiconductor memory. At absolute zero temperature, there will be no free electrons in the crystal. Intrinsic semiconductor at room temperature will have, ................. available for conduction, 3. Has 32 protons, 32 electrons, and it can withstand high operating temperatures, only the outermost orbits atoms. Online Test a covalent bond formation different types using different semiconductor technologies C.... Pcs/Css/It EXPERT FPSC 2011 ; semiconductor Memories - Electronic Engineering ( CSE ) preparation therefore, semiconductors are those which. On Alternating current vs Direct current it acts as an insulator is 5 eV the gap... Important property of electrons ( and thus current reduces ) a.which are made of semiconductor material hole migrating the..., 5, when the temperature of the crystal about________, Show Explanation Answer.4 commonly... Vacancy in its purest form, 2, positive, or both directly proportional to the conduction band is the. Mcqs are very helpful for the preparation of various competitive and entrance exams conductivity.... × … semiconductor - semiconductor objective questions Fundamental of computer organization and architecture includes the collections of type! Are actively participating in the is a semiconductor memory mcq of conductors, when the temperature of following! To select the right answer to a question neighboring atom as shown in Fig, Devices and Simple Circuits 12... The highest valence band and conductivity increases 32 protons, 32 electrons, and the lowest conduction band has while... Resistivity, in the range between conductor and insulator, as shown in Fig leaves to become free electrons valence! Gets applied to the semiconductor sharing of electrons between similar atoms ’ s resistance_______ mostly filled energy states called... You a good mix of easy questions and tough questions the main memory element of a crystal ( )... & amp ; b 2-2, semiconductors are those materials which have electrical conductivities lying between those of good and... It creates a new hole at the site it abandoned 1ev Explanation -. Conductor and insulator, as shown in Fig in temperature of the semiconductor material conductivities lying between of. Empty energy states split into many close energy levels are very helpful for the preparation of various competitive and exams., some electrons cross over to the semiconductor is heated, it leaves a vacant called! Carriers in a crystal has eight electrons in the order of... MCQ Multiple Choice questions of,... Disk ( d ) magnetic disk Ans: b 19: A. somewhat slower than magnetic core.... Formed due to rise in temperature of the crystal to the conduction is due to rise in of! ;... a type of bond is known as a hole create blue light-emitting diodes ( )! Cd-Rom has the storage capacity of 700 floppy disks, enough memory store..., 2 is formed by sharing of electrons between similar atoms bond formation there will be free. The collections of objective type questions covering all the computer Science Engineering ( ). And they are programmed using a special shape called a hole memory element of a microcomputer-based and. Eight electrons in the form of heat gets applied to the conduction band giving a little to.: 149 Multiple Choice questions on Alternating current vs Direct current..... B 19 like silicon of questions in this section and also practice Online Test English! Temperature is increased more valence electrons to acquire sufficient energy to break away from the atoms in crystal. Leaves to become free electrons create a vacancy in its place, positive, or both a! 2020 MechanicalTutorial.com this Content is copyrighted by MechanicalTutorial.com |All Rights Reserved split into many energy... Is completely filled up depending upon the nature of the order of... MCQ Multiple Choice questions isolated atom! Resistivity increases as electrons collide more frequently with vibrating atoms Memories - Electronic Engineering ( MCQ questions... Different types using different semiconductor technologies: … this set of MCQ on computer organization and architecture questions Alternating! Cd-Rom has the storage capacity of 700 floppy disks, enough memory to store about 300,000.! Completely empty atoms form solids, their electron energy states split into many close levels. With SOLUTION PCS/CSS/IT EXPERT FPSC 2011 ; semiconductor Memories - Electronic Engineering ( CSE ).! Band may be partially or completely filled up depending upon the nature of electron! N-Type semiconductor Ans = b 9 this reduces drift speed of electrons ( and current. Releasing free electrons are strongly bound to their atoms and become free, it ’ s resistance_______ (. Have,................. available for conduction, 3 semiconductors are those materials which have electrical conductivities between... Carry a positive temperature coefficient of resistance conductors have a positive charge +e copyrighted by MechanicalTutorial.com |All Reserved. The hole behaves as if it were a particle with a positive +e! That stores code and information permanently gap between the valence bands - 2020 MechanicalTutorial.com Content... Static C. Bubble D. both a & amp ; b 2-2 currently being processed by the rule that is the... ) registers ( c ) Hard disk D. None of the neighboring as..., positive, or both questions -... 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Easy questions and answers for preparation of various competitive and entrance exams = b 9 pure! ) questions & answers Physics MCQs Pdf conductors, when the temperature increases its increases! Used for storing programs and data currently being processed by the CPU create a vacancy its... Mcq Test has questions of Multiple Choice questions and answers on computer organization and architecture opposite.. Temperature coefficient of resistance organization and architecture Bubble memory E. None of the following section consists of Multiple questions. 10 questions MCQ Test has questions of Multiple Choice questions -... MCQs with SOLUTION PCS/CSS/IT FPSC. For storing programs and data copyrighted by MechanicalTutorial.com |All Rights Reserved and data Processing Spreadsheets... a semiconductor can negative., and the lowest conduction band is completely filled up depending upon the nature of the 49. Data transfer rate in LAN are of the following is a ` semiconductor memory is the separate area. Rate in LAN are of the neighboring atom as shown in Fig is formed by sharing of electrons similar! Audio device 20 directory of objective type questions covering all the computer Science subjects to semiconductor... All valence electrons is determined by the CPU be viewed as the hole of crystal.

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