Which Is The Best Insulator?


Diamond, which is made up of nothing but carbon atoms, is also known to be an excellent insulator since it does not have any free electrons that can carry an electrical current. Other examples of good insulators include rubber, glass, air, oil, and pure water. Was this answer helpful?



Which is the best insulator?

Diamond, which is made up of nothing but carbon atoms, is also known to be an excellent insulator since it does not have any free electrons that can carry an electrical current. Other examples of good insulators include rubber, glass, air, oil, and pure water. Was this answer helpful?


Which type of cable is used upto 11kV?

1. Belted cables: These cables are used for voltages upto 11kV but in extraordinary cases, their use may be extended upto 22kV.


Which is best conductor of electricity?

pure silver


Why is switch in live wire?

A switch or a fuse in an electrical circuit is always connected to the live wire so that the socket or appliance is not live when switched off.


Which is the poor conductor of electricity?

Materials that are poor conductors of electricity are called insulators. Some examples are wood, glass, plastics, non-metal elements that are polymers of hydrocarbons.


Where is fuse inserted?

In live wire, fuse wire is inserted since it is a safety device used to secure electrical equipment against short-circuit as well as overloading.


What is SL type cable means?

S.L Type Cables: It is similar to the H type cables, with the difference that each of the three cores has its own lead sheath. With this provision, the need for the overall sheath used previously is eliminated. The advantage of such a construction is that the chances of a core-to-core breakdown are greatly minimized.


What are the possible causes of cable fault Mcq?

N/A

  • absence of harmonics.
  • non-existence of any stability limit.
  • smaller dielectric loss.
  • absence of ripples.


What is the main purpose of an electrical cable Mcq?

To minimize temperature stresses. To avoid being unearthed easily due to removal of soil. To minimize the effect of shocks and vibrations due to gassing vehicles, etc. For all of the above reasons.


How many conductors are there in twisted pair cable Mcq?

A twisted pair cable comprises two separate insulated copper wires, which are twisted together and run in parallel.


What is the main purpose of electric cable?

Power cables are used for bulk transmission of alternating and direct current power, especially using high-voltage cable. Electrical cables are extensively used in building wiring for lighting, power and control circuits permanently installed in buildings.


What is PVC wire?

PVC (Polyvinyl chloride) is widely used in electrical cable construction for insulation, bedding and sheathing. It was the 1950s when PVC started to replace rubber insulated and sheathed cables in general household wiring due to its ease of processing.


How does electricity flow through a transistor?

We know that in transistors and diodes, electric current is carried by both free electrons and holes. Free electrons and holes travel in opposite directions. For example, if free electrons flow from left to right then the holes will flow from right to left.


What are the losses in transformer?

Transformer losses are produced by the electrical current flowing in the coils and the magnetic field alternating in the core. The losses associated with the coils are called the load losses, while the losses produced in the core are called no-load losses.


What is the cause of electric current?

Electricity begins with the atom. Atoms are made up of protons, neutrons, and electrons. Electricity is created when an outside force causes electrons to move from atom to atom. The flow of electrons is called an “electrical current.”


What molecules are organic?

Organic molecules are molecules that are made of carbon and hydrogen, and can include other elements. Organic molecules must contain carbon atoms covalently bonded to hydrogen atoms (C-H bonds). They usually involve oxygen and can also contain nitrogen, sulfur, phosphorous, and others.


What physical properties are different for the isomers?

The more carbon atoms a hydrocarbon has, the greater the number of isomers. Isomers are different compounds with different properties, such as different boiling and melting points.


What are different types of switches?

Learn the Different Types of Switches

  • Pushbutton Switches. Pushbutton switches are two-position devices actuated with a button that is pressed and released.
  • Selector Switches.
  • Joystick Switches.
  • Limit Switches.
  • Proximity Switches.
  • Speed Switches.
  • Pressure Switches.
  • Temperature Switches.


What are the first 10 carboxylic acid?

You can check out the list below.

Carboxylic Acids List.

NameFormulaNumber of Carbon Atoms
Octanoic acidCH3(CH2)6COOH8
Nonanoic acidCH3(CH2)7COOH9
Decanoic acidCH3(CH2)8COOH10
Dodecanoic acidCH3(CH2)10COOH12


What is transistor with example?

1. The definition of a transistor is an electronic device that works by controlling the flow of the electrical current. An example of a transistor is something combined in large numbers with microcircuits into a single circuit board and used in a computer.


Dated : 14-May-2022

Category : Education

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