Bakelite continues to be used for wire insulation, brake pads and related automotive components, and industrial electrical-related applications. Insulators are made up of non-conducting materials that are bad conductors of heat and electricity. Cloudflare Ray ID: 60754617ca823b4b Which is an example of an insulator (a) bakelite (b) aluminium (c) tap water (d) All of these. < Classification of insulating materials . If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. insulator definition: 1. a material or covering that electricity, heat, or sound cannot go through: 2. a material or…. A) cellulose B) starch C) Both A and B D) silk 6. Ebonite is a brand name for a material generically known as hard rubber, and is obtained by vulcanizing natural rubber for prolonged periods. gadho072 gadho072 Answer: i am so thankful to answer your question. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Sponsored by Bloomberg News. … Performance & security by Cloudflare, Please complete the security check to access. Alibaba.com offers 1,471 bakelite electrical insulation board products. All porcelain switches and power outlets can be combined with one another. Micarta is produced in sheets, rods and tubes for hundreds of industrial applications in the electronics, power generation and aerospace industries. The lower part of the insulator is located within the transformer body and therefore can be made smaller than the upper part located in open air. A thermosetting polymer, resin, or plastic, often called a thermoset, is a polymer that is irreversibly hardened by curing from a soft solid or viscous liquid prepolymer or resin. mark me as brainlist please . Answer: Insulator is the material that does not allow an electric current to pass through it. Insulators for devices operating in enclosed spaces are made from bakelite or porcelain and have a much simpler contour for the outside surface (for example, flange-type support insulators). A hard, infusible, and chemically resistant plastic, Bakelite was based on a chemical combination of phenol and formaldehyde (phenol-formaldehyde resin), two compounds that were derived Give two example each of conductor and insulator 2 See answers singhkulwinder6746 singhkulwinder6746 Answer: Conductor:steel and metal the base of utensils. A) PVC B) Bakelite C) Melamine D) Polythene 5. A wide variety of bakelite electrical insulation board options are available to you, such as material, application, and type. As the handle, bakelite will provide properties such as high temperature resistant and acts as an insulator / heat barrier, so it is easy to wear / hold equipment. Why does one remove the plastic coating of connecting wires before making circuits? Examples of good insulators, depending on uses, are -air, gases, pure Water, oils of both natural and synthetic origin, wood, paper, mica, ceramics, plastic, bakelite, epoxy/ PU/ polyester resins etc. Bakelite is an excellent insulator and is resistant to heat, but it may swell under prolonged humid conditions. Phenolic resins have to be reinforced with a filling agent. Our plugs do come with one of these (so there is no need to buy one if you are buying a plug already), these are intended as … The history of thermal insulation materials is not as long as that of other materials, but the necessity of insulation is as old as building activity. Ebonite may contain from 25% to 80% sulfur and linseed oil. Bakelite is also available in sheet, tube and rod forms. Choose the correct answer: Natural polymer occurring in plant is . Large number of thermoplastics are used everywhere due to their ease in use and moulding. • They are available both in solid and liquid form among the solid product of cellulose ester and phenolic vinyles etc are important Bakelite is an outstanding example … Paper 29. Answer. Its name comes from its intended use as an artificial substitute for ebony wood. Bakelite is first made synthetic resin which was used for commercial purposes. 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Voltage Stabilizers, buttons (bakelite knob), etc. Log in, Concise Mathematics Class 10 ICSE Solutions 2018. Please enable Cookies and reload the page. ESD Bakelite Sheet is a kind of antistatic materials which is added anti-static agents in the production of Bakelite sheet, and effect Bakelite to achieve the best antistatic performance. The surface and volume resistivity value is 106-109Ω. Substrate is phenolic resin and electric grade bleached wood pulp paper . A) Bakelite B) Melamine C) Teflon D) None of these 4. In America's richest town, $500k a year is below average. Your IP: 104.131.132.68 Answer: Plastics is a bad conductor or insulator of electricity. Give few examples. Metals like sodium (Na) are the best conductors. Sawdust was most commonly used in plugs. The condensation reaction of phenol and formaldehyde results in the product Bakelite. | Meaning, pronunciation, translations and examples A dielectric, or electrical insulator , is a substance that is highly resistant to the flow of electric current. The insulating materials belong to two large groups such as inorganic and organic. Bakelite powder is obtained by mixing phenolic resin with sawdust, talc powder (filler), Urotropine (curing agent), stearic acid (lubricant), pigments and cooling in a mixer. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst.Heat is not necessarily to be applied externally. For example, air can function as an insulator if it occurs at room temperature, if it undergoes certain changes in its temperature, it can act as a conductive agent. Contact Us Locations About Us Track Shipment Register Log In Cart The Leader in Plastic Sheets, Rods, Tubing, Profiles, & Components 1-888-995-7767. When impregnated with oil, its properties as an insulator get further improved. Thermosetting phenolic plastics were obtained by cooling and pressing bakelite powder in the mould. They are used as sheets, rods, tubes ans also mouldable granules. Your email address will not be published. The material has also been called vulcanite, although that name formally refers to the mineral vulcanite. But, as with all insulators, they have a breakdown point where a high enough voltage across them will allow current to be conducted. It is an example of thermosetting resin of phenol and formaldehyde. Electrical Insulators Synthetic Resin • These artificial materials have occupied a place of great importance in the field of electrical insulation. Insulator definition: An insulator is a material that insulates something. Bakelite, by Westinghouse, is considered an insulator in ambient conditions because it has specific resistivity in the range of many megohms per unit volume. Physical properties of an insulator. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Some of the materials used for insulators are:-SOLIDS:- Plastic, Wood, Paper, rubber, Bakelite, Glass, Mica, Ceramic. Answer: (a) bakelite Explanation: Aluminium and tap water are conductors of heat. An electrical insulator provides very high resistance so that practically no current can flow through it. Learn more. About 39% of these are Insulation Materials & Elements. Insulator to fit our round Bakelite style 2-prong button plugs (Ribbed and Acorn&Oak style), as well as a great replacement part for most round style antique plugs. Blanket is one example of a good insulator that keeps you warm. Bakelite stock is still manufactured and produced in sheet, rod and tube form for industrial applications in the electronics, power generation and aerospace industries, and under a variety of commercial brand names. 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