What is meant by dielectric heating?

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asked Mar 11, 2018 by anonymous

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asked Apr 28, 2018 by anonymous

The frequencies and voltage used in Dielectric heating are

The frequencies and voltage used in Dielectric heating are (A) 10 – 30 MHz, upto 25 kV (B) 50 – 60 Hz, upto 25 kV (C) 10 – 30 MHz, upto 100 V (D) 50 – 60 Hz, 110 V – 230 V

Last answer: The frequencies and voltage used in Dielectric heating are 10 – 30 MHz, upto 25 kV

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87 views 1 answer

asked Mar 11, 2018 by anonymous

What is meant by resistance heating?

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asked Mar 11, 2018 by anonymous

What is the difference between an insulator and a dielectric?

Last answer: Dielectric is the another name for insulator.

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asked Apr 29, 2018 by anonymous

The range of frequencies used in induction heating is :

The range of frequencies used in induction heating is : (A) 0-25 Hz (C) less than 200 Hz (B) 50 to 100 Hz (D) more than 1 kHz

Last answer: The range of frequencies used in induction heating is : more than 1 kHz

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asked Mar 11, 2018 by anonymous

Is induction heating safe?

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asked Apr 25, 2018 by anonymous

Dielectric loss in a capacitor is best measured by

Dielectric loss in a capacitor is best measured by (A) Wien Bridge (B) Schering Bridge (C) Anderson Bridge (D) Heaviside-Campbell Equal Ratio Bridge

Last answer: Dielectric loss in a capacitor is best measured by Schering Bridge

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asked Sep 4, 2018 by anonymous

What is dielectric strength of an insulating material? What is its unit?

Last answer: Dielectric Strength: The dielectric strength of an insulating material is the maximum voltage which the insulating medium can withstand without breakdown. Unit is volts per millimeter (V/mm), or kV/mm or kV/cm

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asked Mar 10, 2018 by anonymous

What is dielectric breakdown strength?

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asked Mar 10, 2018 by anonymous

What is dielectric withstand voltage?

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asked Apr 30, 2018 by anonymous

_________ is used for heating non -conducting materials.

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

Last answer: Dielectric heating is used for heating non -conducting materials.

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asked Mar 6, 2018 by anonymous

can induction heating is use for both magnetic and non magnetic material ?

Last answer: Yes, Induction heating is used for both magnetic and non-magnetic materials.

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asked May 7, 2020 by anonymous

Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

Last answer: Parts Insulating Materials Insulation between heating element and base plate of electric iron. Mica Insulation used over copper or aluminium conductor used for making coils. ... Transformer bushings Porcelain Insulation between transmission line and pole. Porcelain

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68 views 1 answer

asked Aug 17, 2019 by anonymous

State advantages of electric heating over other types of heating methods.

Last answer: Advantages of Electric heating over the other types of heating methods: 1. It can be put into service immediately. 2. No standby losses. 3. High efficiency. 4. More economical ... low attention and supervision. 14. Protection against overheating can be provided by suitable switch gear.

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asked Jul 30, 2019 by anonymous

Enlist any four advantages of induction heating.

Last answer: Advantages of Induction heating https://youtu.be/RcdH_74VJz0

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asked Mar 19, 2018 by anonymous

In order that current should flow without causing excessive heating or voltage drop, the relay contacts should?

Last answer: In order that current should flow without causing excessive heating or voltage drop, the relay contacts should have low contact resistance, be clean and smooth, be of sufficient size and proper shape.

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112 views 1 answer

asked Apr 28, 2018 by anonymous

The bridge most suited for accurate measurement of relative permittivity of dielectric materials is

The bridge most suited for accurate measurement of relative permittivity of dielectric materials is (A) Carey Foster Bridge (B) Anderson’s bridge (C) Heaviside Bridge modified by Campbell. (D) Schering Bridge.

Last answer: The bridge most suited for accurate measurement of relative permittivity of dielectric materials is Schering Bridge.

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asked Mar 19, 2018 by anonymous

The dielectric strength of transformer oil is expected to be?

Last answer: The dielectric strength of transformer oil is expected to be 33 kV.

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asked Apr 16, 2020 by anonymous

Define Dielectric Strength for transformer oil. State its value for new transformer oil.

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asked Aug 4, 2019 by anonymous

Write one application for the give dielectric material. (i) Polyvinyl Carbide(PVC) (ii) Glass (iii) Mica (iv) Cotton and Silk

Last answer: (i) Polyvinyl Carbide(PVC):it is used in insulation of wires and cables in domestic wiring as well as in aircraft and factory wiring (any one) (ii) Glass: 1) Alkaline glasses are used for ... with wax or varnishes are used in windings of magnet coils and small medium sized mechanics (any one)

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asked Aug 4, 2019 by anonymous

State any four dielectric materials.

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

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asked Sep 4, 2018 by anonymous

Define : (i) Dielectric strength (ii) Breakdown voltage

Last answer: (i) Dielectric strength: The voltage which a dielectric material can withstand without breaking down (without losing its dielectric property) is called its dielectric strength. It is represented by kV/mm ... or is no longer an insulator) for a specified thickness, is its breakdown voltage.

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37 views 1 answer

asked Apr 30, 2018 by anonymous

The power factor of dielectric :

The power factor of dielectric : (A) is a function of temperature of the dielectric only (B) depends only on voltage stress to which the dielectric is stressed (C) always constant (D) both (A) and (B)

Last answer: The power factor of dielectric : (A) is a function of temperature of the dielectric only (B) depends only on voltage stress to which the dielectric is stressed (C) always constant (D) both (A) and (B)

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asked May 20, 2018 by anonymous

Dielectric heating is used for heating

Dielectric heating is used for heating A) Wood B)Aluminium C) Magnetic steel D) Copper

Last answer: Dielectric heating is used for heating Wood

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asked May 25, 2018 by anonymous

The normal voltage for dielectric heating is

The normal voltage for dielectric heating is (a) 1500 V (b) 11 kV (c) 33 kV (d) 66 kV

Last answer: 66kv

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asked Nov 13, 2018 by anonymous

Principle of dielectric heating furnace

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asked Oct 13, 2018 by anonymous

Applications of Dielectric Heating

Last 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 { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

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asked Oct 12, 2018 by anonymous

State any two applications of each for the following types of electrical heating : (i) Direct resistance heating(ii) Indirect induction heating (iii) Direct.arc heating (iv) Dielectric heating

Last answer: (i) Direct resistance heating:- 1. This type of heating used for industrial purpose 2. Salt bath heating: This utilized for the purpose of carbonizing, tempering, quenching and hardening of steel tools 3. ... purpose. 14)In foundry for heating of sand, core, which are used in molding processes.

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asked May 20, 2018 by anonymous

For induction heating, which of the following is abnormally high?

For induction heating, which of the following is abnormally high? A)Voltage B) Current C) Frequency D) Phase angle

Last answer: For induction heating, which of the following is abnormally high? A)Voltage B) Current C) Frequency D) Phase angle

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181 views 1 answer

asked May 25, 2018 by anonymous

For heating a magnetic material using induction heating, the hysteresis and eddy current losses are

For heating a magnetic material using induction heating, the hysteresis and eddy current losses are respectively proportional to (a) f and f 2 (b) f 2 and f (c) f and f (d) none of the above

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What is meant by ‘Capital Gain’ ? (1) Part of profits added to the capital (2) Appreciation in the money value of assets (3) Additions to the capital invested in a business (4) None of these

Last answer: Appreciation in the money value of assets

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What is meant by the term “midnight sun” ? (1) Twilight (2) Rising Sun (3) Very bright moon (4) Sun shining in the polar circle for long time

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What is meant by Isthmus? (1) Mouth of a river where it joins the sea (2) Narrow strip of water dividing two land masses (3) Narrow strip of land dividing two oceans (4) Narrow strip of land connecting two large areas of land

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asked May 30, 2018 by anonymous

What is meant by Biot Savart law?

Last answer: Module 3 : MAGNETIC FIELD Lecture 15 : Biot- Savarts' Law Objectives In this lecture you will learn the following Study Biot-Savart's law Calculate magnetic field of induction due to some simple ... other circuit. NPTEL Distributed under Creative Commons Attribution-ShareAlike - CC BY-SA.

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What is meant by brand resonance?

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What is meant by devoted computer ____.

What is meant by devoted computer ____. a) Which uses only one kind of software b) Which is used by only one person c) Which is assigned with only one task d) No such type of computers are available

Last answer: What is meant by devoted computer ____. a) Which uses only one kind of software b) Which is used by only one person c) Which is assigned with only one task d) No such type of computers are available

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What is meant by bias stabilization?

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Last answer: The point at which SCR is triggered is known as firings angle of thyristor.

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What is meant by dielectric heating?

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