search
person
What kinds of materials can not electricity pass through?

Related questions

Description : A 1000Ohm, 1 Watt resistor can safely pass a current of

Answer : A 1000 Ohm, 1 Watt resistor can safely pass a current of 30 mA

Answer : Rubber is a insulator it do not allow flow of current so electricity can not flow through rubber.

Answer : No. Wood is an insulator and it doesn't free electrons to flow in it.

Description : What do you mean by active filter? State its advantages over passive filter . Define pass band & stop band with respect to filter.

Answer : Active Filter: Active Filter is formed by using active element along with the passive components.  Advantages of Active filter over Passive filter: High value of pass band gain can be obtained. It is ... pass band.  Stop Band Filter: The frequency range which is attenuated is known as stop band.

Description : Explain the single pass transformer design procedure step by step by giving its flowchart.

Answer : single pass transformer design procedure step by step by giving its flowchart:

Description : write short notes on Low-pass filter.

Answer : low-pass filter (1) filter exhibiting frequency selective characteristic that allows low-frequency components of an input signal to pass from filter input to output unattenuated all high-frequency components are ... the bandwidth of the filter. A filter whose impulse response is a low-pass signal.

Description : How is electricity passed through a wire?

Answer : A  wire contains  mobile  electrons  as  majority  charge  carriers  and  holes  as minority  charge carriers when  an emf  or   potential  diffrence is  provided , electrons  flow  in opposite  direction  with  holes(convection current  flow)

Description : List at least two examples that show how static electricity can be generated.

Answer : Examples of how static electricity can be generated include combing your hair, walking across a carpeted room, or sliding two pieces of plastic across each other.

Description : Magnetostrictive materials can convert ________ A) Magnetic energy into kinetic energy B) Kinetic energy into magnetic energy C) Both A and B D) None of these

Answer : Magnetostrictive materials can convert ________ A) Magnetic energy into kinetic energy B) Kinetic energy into magnetic energy C) Both A and B D) None of these

Description : necessity of transmission of electricity.

Answer :  Because of following points there is necessity of transmission of power:   1. Electrical load on power system is not concentrated at one place but it is widely spread.  2. Load ... to the point of actual utilization of it (consumers) for this purpose transmission electricity is necessary. 

Description : Describe the concept of Ferro electricity. Explain the application of Ferro electric material

Answer : The ferroelectric material has an electric dipole moment and it is spontaneously polarized. They have high dielectric constant which is nonlinear because it is dependent on the intensity of ... used in condensers to concentrate considerable quantities of electric energy within a small space. 

Description : The consumer of electricity could be : (A) Domestic (B) Agricultural (C) Industrial and Commercial (D) All of the above 

Answer : The consumer of electricity could be : (A) Domestic (B) Agricultural (C) Industrial and Commercial (D) All of the above 

Description : The Central Electricity Regulatory Commission (CERC) is mainly responsible for:  (A) Regulating tariffs for generation and inter-state transmission of energy including tariffs  (B) Advising the government on ... (C) Efficiency and economy in the electricity industry  (D) All of the above

Answer : The Central Electricity Regulatory Commission (CERC) is mainly responsible for:  (A) Regulating tariffs for generation and inter-state transmission of energy including tariffs  (B) Advising the government on ... (C) Efficiency and economy in the electricity industry  (D) All of the above

Description : As per Electricity Act, ____________means any line which is used for carrying electricity for any purpose.  (A) Electric line (B) Transmission line (C) All of the above (D) None of the above

Answer : As per Electricity Act, Electric line means any line which is used for carrying electricity for any purpose. 

Answer : To avoid electric shock from electrical appliances to the human body 

Answer : Electricity is generated at electrical power generation station.

Description : What do we use to generate electricity?

Answer : Use wind turbines.  In a windy seashore we set up some wind turbines.  But when the place is not windy we got no electricity.

Description : What speed does electricity travel at?

Description : State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them. 

Answer : The insulating materials used in motor are as belows: 1. Cotton, 2. Silk, or paper, 3. Press board, 4. Resins 5. PVC 6. Cellulose-Fiber, 7. Enameled coating, etc  ... Over 180° Mica, porcelain, ceramics, glass quartz, asbestos, treated glass fiber or treated asbestos. etc.

Description : State the type of insulating materials under Class Y and Class B.

Answer : The type of insulating materials under Class Y : 1. Cotton  2. Silk 3. Paper 4. Rubber 5. PVC The type of insulating materials under Class B: 1. Backelite 2. Impregnated varnish 3. Mica 4. Fiber glass 5. Asbestos 

Description : State properties of insulating materials.

Answer : (i) Resistivity should be very high. (ii) It should be water resistant. (iii) It should not contain impurities. (iv) It should not be affected chemically and not corroded easily. (v) Its ... It should be mechanically strong (tensile strength should be more). (vii) It should not be porous.

Description : State any four dielectric materials.

Answer : Ceramics, distilled water, paper, mica, polyethylene, and glass. Metal oxides

Description : Classify electrical materials.

Answer : Classification of electrical materials: i) Conducting Materials ii) Insulating materials iii) Magnetic materials iv) Semiconducting materials

Description : Explain the mechanical properties of insulating materials.

Answer : i) Mechanical strength: Mechanical strength depends on temperature and humidity. a) Temperature: High temperature badly affects the mechanical strength of insulating material. While selecting material ... material should have property of easy moulding and machined into required shape and size.

Description : Classify magnetic materials and explain in brief.

Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { ... the absence of external magnetic field. Following are the ferromagnetic materials: Iron, Cobalt, Nickel.

Description : State any four properties of conducting materials.

Answer : Electrical properties of conductivity materials: i) Low resistivity. ii) Low temperature coefficient of resistance. iii) High conductivity. iv) Low heat dissipation.  Mechanical properties of ... properties of conductivity materials: i) Adequate resistant to corrosion. ii) Low oxidation. 

Description : _______ is used for heating non -conducting materials.  (1) Eddy current heating (2) Arc heating (3) Induction heating (4) Dielectric heating

Answer : Dielectric heating is used for heating non -conducting materials. 

Description : The ability of materials to become polarized under an applied electric field is called _______ A) Ferroelectricity B) Paraelectricity C) Polectricity D) None of these

Answer : The ability of materials to become polarized under an applied electric field is called Paraelectricity

Description : Those materials are well suited for making permanent magnets which have _____ retentivity and _______ coercivity.

Answer : Those materials are well suited for making permanent magnets which have high retentivity and high coercivity.

Description : Those magnetic materials are best suited for making armature and transformer cores which have____permeability and_______hystersis loss.

Answer : Those magnetic materials are best suited for making armature and transformer cores which have high permeability and low hystersis loss.

Description : What materials are interior doors made of?

Answer : What materials are interior doors made of? The door leaf material is a key component that influences the quality and cost of the door. Interior doors made of walnut or oak look great and ... relevant for office doors, but they are also installed in residential premises if necessary to reduce costs.

Description : What materials are diamagnetic?

Description : What is non ferromagnetic materials?

Description : What are some ferromagnetic materials?

Description : What is the meaning of electrical materials?

Description : Define the terms: i) Tariff ii) Fuel surcharge iii) Electricity Duty iv) Connected load

Answer : i) Tariff: The rate at which a consumer is charged for the consumption of electricity is called as tariff. OR The amount of money framed by the supplier for the supply of electrical energy ... is the total wattage of all appliances which are used by the consumer on his sanctioned connection. 

Description : Define the following terms related to tariff: (i) Connected load (ii) Unit consumed (iii) Fixed charges (iv) Electricity Tax 

Answer : (i) Connected load  It is the sum of the power ratings (Watts or kW or MW) of all devices and machines existing (installed) in the premises of consumer. It is used to decide the ... a percentage of the total electricity bill which includes all amounts that go to the electricity supply agency. 

Answer : Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.

Description : How do magnets and copper wire make electricity?

Answer : According  to  Faradays  law , a changing  magnetic  field  on  a  conductor  induses  current  in  the  conductor  through   mutual  induction.

Description : Is electricity generated in AC or DC?

Answer : Electricity   is  generated  in  AC.

Description : How much electricity is produced by a power plant?

Description : Is Aluminium a good conductor of electricity?

Answer : Yes aluminium is a conductor and it is a good conductor of electricity. But copper have better conductivity as compare to aluminium.

Description : How electricity is transmitted and distributed?

Description : How electricity is distributed?

Description : How much is 1 unit of electricity?

Answer : 1 unit of electricity is equal to 1 kWh.

Description : Is electricity faster than lightning?

Description : Is it AC or DC electricity in the home?

Answer : Obviously its A.C

Description : How the electricity is transmitted?

Description : Why do you need a closed circuit for electricity to flow?

Answer : When  the  circuit  is  closed  , a potential  diffrence  is  realized  between  the  two  nodes  connected  .This  causes  flow of  electrons  and  convection  current.

Description : How does the electricity travel?

Answer : Electricity can only travel when there is a force pushing it. This force is called electromotive force. Take a look at  a water pump. When you on it force(EMF)will be applied to the ... its specified destination. This same process is applied to  electricity. EMF is required to start the process. 

← Prev Question Next Question →
editChoose topic
...