1 Answer

Answer :

Intrensic purely made

Extremsic with doping of trivaalent pr pentavalent

Related questions

Description : Name two good conductors, two good insulators, and two semiconductors.

Last Answer : In general all metals are good conductors, with silver the best and copper second.

Description : Which of the following elements are used as dopants in silicon or germanium semiconductors? A) Antimony B) Phosphorus C) Arsenic D) All the above

Last Answer : Which of the following elements are used as dopants in silicon or germanium semiconductors? A) Antimony B) Phosphorus C) Arsenic D) All the above

Description : Photoconductivity is a characteristic of semiconductors. When light falls on certain semiconductors, it (a) Sets free electrons from some of the atoms, increasing the conductivity (b) Ejects ... Establishes a potential difference creating a source of EMF (d) Produces heat raising the temperature

Last Answer : Photoconductivity is a characteristic of semiconductors. When light falls on certain semiconductors, it Sets free electrons from some of the atoms, increasing the conductivity

Last Answer : In elections devices semi conducters are used 

Description : Photovoltaic cells are semiconductors of

Last Answer : Photovoltaic cells are semiconductors of A. silicon B. gallim arsinide C. cadmium telluride D. all the above

Description : Assertion : Zone refining method is very useful for producing semiconductors. Reason : Semiconductors are of high purity.

Last Answer : Assertion : Zone refining method is very useful for producing semiconductors. Reason : Semiconductors are of high purity.

Description : What are the semiconductors in the periodic table?

Last Answer : The ones adjacent to silicon.

Description : What common element is used in semiconductors?

Last Answer : silicon

Description : Why is silicon and germanium used in semiconductors.pdf?

Last Answer : Feel Free to Answer

Description : What common element is used in semiconductors?

Last Answer : silicon

Description : What are semiconductors made of?

Last Answer : Semi conducts are made of a crystalline (usually silicon) tube connected to two electrodes. See http://en.wikipedia.org/wiki/Diode

Description : Which is used for manufacturing chips? A) Bus B) Control unit C) Semiconductors D) A and b only

Last Answer : Answer : C

Description : When two semiconductors of p-and ntype are brought in contact, they form p-n junction which acts like a/an – (1) Conductor (2) Oscillator (3) Rectifier (4) Amplifier

Last Answer : (3) Rectifier Explanation: P-n junction is a device which flows current in one direction when it is forward biased and when it is reverse biased it doesn't flow any current through it. So it ... (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.

Description : Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Last Answer : (4) All of these Explanation: Silicon is a chemical element (its symbol in chemical formula expressions is "Si") that is present in sand and glass and which is the best known semiconductor material in electronic components. Its atomic number is 14.

Description : What are semiconductors?

Last Answer : The materials whose electrical property lies between those of conductors and insulators are known as Semiconductors. Ex germanium, silicon. It has two types. 1. Intrinsic semiconductor 2. Extrinsic semiconductor.

Description : Write briefly a. Supernova: b. Radioactivity c. Laser: d. Semiconductors: e. Geothermal Energy

Last Answer : a. Supernova: star increasing suddenly in brightness. b. Radioactivity: spontaneous disintegration of atomic nuclei, with the emission of usu. penetrating radiation or particles. c. Laser: device ... a computer program and intended to corrupt the system or destroy data. g. Pasteurization:

Description : How are extrinsic semiconductors classified?

Last Answer : Extrinsic semiconductors are classified into two types depending upon the type of impurity added into a) n-type semiconductor b) p-type semiconductors.

Description : Give reason: a) 14th group electrons are semiconductors except carbon.

Last Answer : a) 14th group electrons are semiconductors except carbon.The valence electrons have a low energy that they cannot become free by absorbingnormal energy from the surroundings. b) Silicon is ... same 4 valence electrons but silicon can be used at highertemperatures, cheaper and abundantly available.

Description : What is the reason for the conductivity of semiconductors?

Last Answer : Semiconductors require a small amount of energy to break the covalent bond to set theelectron free. Thus as the temperature increases, the number of electrons dissociatedfrom their atoms increases. Thus semiconductors behave as conductors.

Description : What are semiconductors? Give example.

Last Answer : Substances that have conductivity between that of conductors and insulators are called semiconductors. Example: Silicon, Germanium

Description : Semiconductors have electron number density of order A. 1024 m-3 B. 1020 m-3 C. 1012 m-3 D. 1023 m-3

Last Answer : 1023 m-3

Description : Which is used for manufacturing chips? a. Bus b. Control unit c. Semiconductors d. A and b only

Last Answer : . Semiconductors

Description : The skin effect is a phenomenon observed in a) Insulators b) Dielectrics c) Conductors d) Semiconductors

Last Answer : c) Conductors

Description : Skin depth phenomenon is found in which materials? a) Insulators b) Dielectrics c) Conductors d) Semiconductors

Last Answer : c) Conductors

Description : Semiconductors possess which type of bonding? a) Metallic b) Covalent c) Ionic d) Magnetic

Last Answer : b) Covalent

Description : Dielectric constant will be high in a) Conductors b) Semiconductors c) Insulators d) Superconductors

Last Answer : c) Insulators

Description : With increase in temperature, the electrical conductivity of semiconductors (A) Increases (B) Decreases (C) Remain constant (D) Either (A) or (B), depends on the type of semi-conductor

Last Answer : Option A

Description : . With increase in temperature, the electrical conductivity of semiconductors (A) Increases (B) Decreases (C) Remain constant (D) Either (A) or (B), depends on the type of semi-conductor

Last Answer : Option A

Description : State one requirement of an electron tube, which does not exist for semiconductors, that makes the tube less efficient than the semiconductor.

Last Answer : The electron tube requires filament or heater voltage, whereas the semiconductor device does not; consequently, no power input is spent by the semiconductor for conduction.

Description : What is the primary advantage of bulk-effect devices over normal pn-junction semiconductors?

Last Answer : Larger microwave power outputs.

Description : Which is used for manufacturing chips? a. Bus b. Control unit c. Semiconductors d. A and b only

Last Answer : c. Semiconductors

Description : Which is used for manufacturing chips? a. Bus b. Control unit c. Semiconductors d. A and b only

Last Answer : c. Semiconductors

Description : Transistors are made from (a) Plastic (b) metals (c)insulators (d) doped semiconductors

Last Answer : d) doped semiconductors

Description : Pure semiconductors silicon and germanium are a) Extrinsic b) Intrinsic c) Insulator d) Diodes

Last Answer : b) Intrinsic

Description : Substances of conductivity between 10–10  10–20 (n m )–1 are: a) Insulators b) Semiconductors c)Super conductors d)Good conductors

Last Answer : a) Insulators

Description : he substances of conductivity of the order of 10–6 – 10–4 (m)–1 are : a) Insulators b) Super conductors c) Semiconductors d)Good conductors

Last Answer : d)Good conductors

Description : Magnetic materials (A) provide path to magnetic flux. (B) are good insulators. (C) are semiconductors. (D) None.

Last Answer : (A) provide path to magnetic flux.

Description : Hall effect is associated with (A) Conductors. (B) Semiconductors. (C) Thermistors. (D) Solders.

Last Answer : (B) Semiconductors.

Description : Holes are majority carriers in (A) P-type semiconductors. (B) N-type semiconductors. (C) Insulators. (D) Superconductors.

Last Answer : (A) P-type semiconductors.

Description : Ceramics are good (A) insulators. (B) conductors. (C) superconductors. (D) semiconductors.

Last Answer : (A) insulators.

Description : All semiconductors in their last orbit have (A) 8 electrons. (B) 2 electrons. (C) 4 electrons. (D) 6 electrons.

Last Answer : (C) 4 electrons.

Description : The covers of electrical machines are made of (A) soft magnetic materials. (B) hard magnetic materials. (C) super conductors. (D) semiconductors.

Last Answer : (A) soft magnetic materials.

Description : Czochralski method is widely used for the growth of crystal of -------------materials. a) Conductors b) semiconductors c) insulator d) conductors & insulators

Last Answer : b) semiconductors

Description : Materials exhibiting zero value of resistivity are known as ______ . (a) conductors (b) semiconductors (c) insulators (d) superconductors

Last Answer : (d) superconductors

Description : Strong and ductile materials (a) Polymers (b) Ceramics (c) Metals (d) Semiconductors

Last Answer : (c) Metals

Description : The dominant charge carriers in p-type semiconductors are: w) neutrons x) electrons y) protons z) holes

Last Answer : ANSWER: Z -- HOLES

Description : In N-type semiconductors the majority of the carriers are: w) holes x) electrons y) protons z) neutrons 

Last Answer : ANSWER: X -- ELECTRONS

Description : When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an (1) Conductor (2) Oscillator (3) Rectifier (4) Amplifier

Last Answer : Rectifier

Description : Classify the solids into conductors, semiconductors and insulators on the basis of band theory of solids. 

Last Answer : In conductors there is no energy gap between valance band and conduction band, they are overlapped on each other. So electrons can jump from valance band to conduction band easily and material ... band when some amount of energy is supplied to it. Therefore insulators cannot conduct the current.

Description : The following property of semiconductors cannot be determined from Hall effect: (1) Semiconductor is n–type or p–type (2) The carrier concentration (3) The mobility of semiconductor (4) The atomic concentration of semiconductor

Last Answer : The following property of semiconductors cannot be determined from Hall effect: The atomic concentration of semiconductor