Are perspex and polythene conductors r insulators?

Are perspex and polythene conductors r insulators?
by

1 Answer

Answer :

?
by

Related questions

Are perspex and polythene conductors r insulators?

Description : Are perspex and polythene conductors r insulators?

Last Answer : ?

What is more important insulators or conductors?

Description : What is more important insulators or conductors?

Last Answer : Both are equally important.Insulators keep the electricity from going where it is notwanted while conductors take electricity where it is wanted.

What is more important conductors or insulators?

Description : What is more important conductors or insulators?

Last Answer : Conductors and Insulators. In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.

What is more important conductors or insulators?

Description : What is more important conductors or insulators?

Last Answer : Conductors and Insulators. In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.

What is more important insulators or conductors?

Description : What is more important insulators or conductors?

Last Answer : Both are equally important.Insulators keep the electricity from going where it is notwanted while conductors take electricity where it is wanted.

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

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

Last Answer : c) Conductors

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

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

Last Answer : c) Conductors

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

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

Last Answer : c) Insulators

Name three electrical conductors and three electrical insulators.

Description : Name three electrical conductors and three electrical insulators.

Last Answer : Ans: conductors: metals, graphite, carbon insulators: glass, rubber, wood 

The substances which have a large number of free electrons and offer a low resistance are called (a) insulators (b) inductors (c) semi-conductors (d) conductors

Description : The substances which have a large number of free electrons and offer a low resistance are called (a) insulators (b) inductors (c) semi-conductors (d) conductors

Last Answer : (d) conductors

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

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

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

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

The use of strain type insulators is made where the conductors are (a) dead ended (b) at intermediate anchor towers (c) any of the above (d) none of the above

Description : The use of strain type insulators is made where the conductors are (a) dead ended (b) at intermediate anchor towers (c) any of the above (d) none of the above

Last Answer : (c) any of the above

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

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

Last Answer : (A) insulators.

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

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

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

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

Last Answer : (d) superconductors

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

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.

Which have more free electrons: conductors or insulators?

Description : Which have more free electrons: conductors or insulators? 

Last Answer : Conductors have many free electrons whereas insulators have very few or none at all.

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

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.

Which of the following is used as no coating for Cooking utensils? (1) Perspex (2) Styrofoam (3) Polystyrene (4) (4)Teflon

Description : Which of the following is used as no coating for Cooking utensils? (1) Perspex (2) Styrofoam (3) Polystyrene (4) (4)Teflon

Last Answer : (4)Teflon Explanation: The non-stick coating used mainly for coating cooking utensils is made using PTFE (polytetrafluoroethylene) that is also known by the name Teflon. Teflon is an inert polymer ... containing substances wet it and it has one of the lowest coefficients of friction of any solid.

Adipic acid is an intermediate in the manufacture of (A) Perspex (B) Nylon-66 (C) Polystyrene (D) Bakelite

Description : Adipic acid is an intermediate in the manufacture of (A) Perspex (B) Nylon-66 (C) Polystyrene (D) Bakelite

Last Answer : (B) Nylon-66

Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer. (A) Thermoplastic (B) Thermosetting (C) Linear (D) Glass like transparent

Description : Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer. (A) Thermoplastic (B) Thermosetting (C) Linear (D) Glass like transparent

Last Answer : (B) Thermosetting

Which of the following is not the commercial name of poly-methyl￾methacrylate (PMMA)? (A) Perspex (B) Lucite (C) Plexiglass (D) Teflon

Description : Which of the following is not the commercial name of poly-methyl￾methacrylate (PMMA)? (A) Perspex (B) Lucite (C) Plexiglass (D) Teflon

Last Answer : (D) Teflon

Lavatory cisterns are normally made of (A) Expanded polystyrene (B) Saturated polyester (C) Perspex (D) PVC

Description : Lavatory cisterns are normally made of (A) Expanded polystyrene (B) Saturated polyester (C) Perspex (D) PVC

Last Answer : (A) Expanded polystyrene

Contact lenses for eyes are made of Perspex, which is nothing but (A) poly-methyl-methacrylate (B) Polystyrene (C) Unsaturated polyester (D) Polypropylene

Description : Contact lenses for eyes are made of Perspex, which is nothing but (A) poly-methyl-methacrylate (B) Polystyrene (C) Unsaturated polyester (D) Polypropylene

Last Answer : (A) poly-methyl-methacrylate

Which of the following polymers is used for making a non stick coatingon frying pans?(A) Bakelite(B) Teflon(C) Perspex(D) PVC

Description : Which of the following polymers is used for making a non stick coatingon frying pans? (A) Bakelite (B) Teflon (C) Perspex (D) PVC

Last Answer : (B) Teflon

Poly-methyl-methacrylate (PMMA) is known as (A) Bakelite (B) Teflon (C) Perspex (D) Nylon-6

Description : Poly-methyl-methacrylate (PMMA) is known as (A) Bakelite (B) Teflon (C) Perspex (D) Nylon-6

Last Answer : (C) Perspex

Perspex can be used as a substitute of glass. Its monomer is (A) Methyl methacrylate (B) DMT (C) Butadiene (D) Tetrafluoroethylene

Description : Perspex can be used as a substitute of glass. Its monomer is (A) Methyl methacrylate (B) DMT (C) Butadiene (D) Tetrafluoroethylene

Last Answer : (A) Methyl methacrylate

Which of the following is an inorganic polymer? (A) Teflon (B) Perspex (C) Silicones (D) Bakelite

Description : Which of the following is an inorganic polymer? (A) Teflon (B) Perspex (C) Silicones (D) Bakelite

Last Answer : (C) Silicones

Perspex is nothing but (A) Acrylic sheet (B) An elastomer (C) An alloy of lead and tin (D) Aluminium foil clad with Bakelite

Description : Perspex is nothing but (A) Acrylic sheet (B) An elastomer (C) An alloy of lead and tin (D) Aluminium foil clad with Bakelite

Last Answer : (A) Acrylic sheet

Adipic acid is an intermediate in the manufacture of (A) Perspex (B) Nylon-66 (C) Polystyrene (D) Bakelit

Description : Adipic acid is an intermediate in the manufacture of (A) Perspex (B) Nylon-66 (C) Polystyrene (D) Bakelit

Last Answer : (B) Nylon-66

Polymethyl methacrylate (PMMA) is known as (A) Bakelite (B) Teflon (C) Perspex (D) Nylon-6

Description : Polymethyl methacrylate (PMMA) is known as (A) Bakelite (B) Teflon (C) Perspex (D) Nylon-6

Last Answer : (C) Perspex

Which of the following is not the commercial name of poly-methyl methacrylate (PMMA)? (A) Styrofoam (B) Lucite (C) Perspex (D) Plexiglass

Description : Which of the following is not the commercial name of poly-methyl methacrylate (PMMA)? (A) Styrofoam (B) Lucite (C) Perspex (D) Plexiglass

Last Answer : (A) Styrofoam

Window panes of aeroplanes are normally made of (A) Perspex (PMMA) (B) Teflon (PTFE) (C) Bakelite (phenol formaldehyde) (D) Polystyrene

Description : Window panes of aeroplanes are normally made of (A) Perspex (PMMA) (B) Teflon (PTFE) (C) Bakelite (phenol formaldehyde) (D) Polystyrene

Last Answer : Option A

Which of the following is used as non-stick coating for cooking utensils? (1) Perspex (2)Styrofoam (3) Polystyrene (4)Teflon

Description : Which of the following is used as non-stick coating for cooking utensils? (1) Perspex (2)Styrofoam (3) Polystyrene (4)Teflon

Last Answer : Teflon

In the diagram `I_(1),I_(2)` are the strength of the currents in the loop and straight conductors respectively `OA=AB=R.` the net magnetic field at th

Description : In the diagram `I_(1),I_(2)` are the strength of the currents in the loop and straight conductors respectively `OA=AB=R.` the net magnetic field at th

Last Answer : In the diagram `I_(1),I_(2)` are the strength of the currents in the loop and straight conductors respectively `OA=AB= ... ` C. `1/(pi)` D. `1/(2 pi)`

Overhead lines generally use (a) copper conductors (b) all aluminium conductors (c) A.C.S.R. conductors (d) none of these

Description : Overhead lines generally use (a) copper conductors (b) all aluminium conductors (c) A.C.S.R. conductors (d) none of these

Last Answer : (c) A.C.S.R. conductors

In AC.S.R. conductors, the insulation between aluminium and steel conductors is (a) insulin (b) bitumen (c) varnish (d) no insulation is required

Description : In AC.S.R. conductors, the insulation between aluminium and steel conductors is (a) insulin (b) bitumen (c) varnish (d) no insulation is required

Last Answer : (d) no insulation is required

which of the following elements are good insulators -General Knowledge

Description : which of the following elements are good insulators -General Knowledge

Last Answer : P and S is an elements are good insulators.

What are the insulators used to make fiber optic cable ?

Description : What are the insulators used to make fiber optic cable ?

Last Answer : The insulators used to make fiber optic cable are Silicon Dioxide and Muli Component Glass (Soda Boro Silicet , NaOH Silicet etc.).

What compares insulators ?

Description : What compares insulators ?

Last Answer : Consider the value of the dielectric strength of a substance . Comparisons are made between insulators.

The compounds used as gaseous insulators in high voltage generators is

Description : The compounds used as gaseous insulators in high voltage generators is

Last Answer : The compounds used as gaseous insulators in high voltage generators is A. `SF_(4)` B. `SF_(6)` C. `SCl_(6)` D. `TeF_(6)`

Are napkins insulators?

Description : Are napkins insulators?

Last Answer : Feel Free to Answer

What are Liquid insulators and examples?

Description : What are Liquid insulators and examples?

Last Answer : Need answer

This group of alumino-silicate minerals is widely used in making electrical insulators (1) Bauxite (2) Chrornite (3) Manganese (4) Mica

Description : This group of alumino-silicate minerals is widely used in making electrical insulators (1) Bauxite (2) Chrornite (3) Manganese (4) Mica

Last Answer : (4) Mica Explanation: Sheet mica is used principally in the electronic and electrical industries. Its usefulness in these applications is derived from its unique electrical and thermal insulating properties and ... it is a good electrical insulator at the same time as being a good thermal conductor.

Superconductors are those elements – (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperature (3) Which conduct electricity only at super-high temperature (4) Which conduct electricity only, at super-high temperatures

Description : Superconductors are those elements – (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperature (3) Which conduct electricity only at super-high temperature (4) Which conduct electricity only, at super-high temperatures

Last Answer : (2) Whose resistance falls almost to zero at very low temperature Explanation: Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in ... lines from the interior of the superconductor as it transitions into the superconducting state.

A bird sitting on a high tension electric wire does not get electrocuted because – (1) it has high resistance (2) the body is earthed (3) it does not form a closed path for the flow of current (4) its feet are good insulators

Description : A bird sitting on a high tension electric wire does not get electrocuted because – (1) it has high resistance (2) the body is earthed (3) it does not form a closed path for the flow of current (4) its feet are good insulators

Last Answer : (3) it does not form a closed path for the flow of current Explanation: Electricity travels from a place of high voltage to low voltage, just as water travels from high elevation to low ... When electricity travels through a body in this fashion, electrocution takes place, and the bird can die.

Which of the listed pairs of materials make the best insulators? A. dry air and a vacuum B. tin and lead C. doped silicon and germanium D. paper and oil

Description : Which of the listed pairs of materials make the best insulators? A. dry air and a vacuum B. tin and lead C. doped silicon and germanium D. paper and oil

Last Answer : Answer: D

Which of the listed pairs of materials make the best insulators? A. copper and aluminum B. glass and mica C. dry air and a vacuum D. doped silicon and germanium

Description : Which of the listed pairs of materials make the best insulators? A. copper and aluminum B. glass and mica C. dry air and a vacuum D. doped silicon and germanium

Last Answer : Answer: B

What are different insulators used in substation

Description : What are different insulators used in substation

Last Answer : Different Insulators: Over head electrical conductors used for transmitting electric power is mostly bare and not covered with any insulation medium. The bare line conductors are ... Post insulators for support Stray arm insulators Shaft insulators Sectionalising insulators Connecting rod insulators