search
person
What is meant by dielectric heating?

Related questions

Description : 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

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

Description : What is meant by resistance heating?

Description : What is the difference between an insulator and a dielectric?

Answer : Dielectric is the another name for insulator.

Description : 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

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

Description : Is induction heating safe?

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

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

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

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

Description : What is dielectric breakdown strength?

Description : What is dielectric withstand voltage?

Description : How to install autonomous heating?

Answer : Autonomous heating and hot water supply is gaining popularity and is used not only in winter, but also in summer. The reason for this, as a rule, is large bills from utilities, as well as the ... a boiler, you should not save on the reliability of the boiler, on control equipment and on service.

Description : 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.

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

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

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. 

Description : Enlist any four advantages of induction heating. 

Answer : Advantages of Induction heating https://youtu.be/RcdH_74VJz0

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. 

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.

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

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

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

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) 

Description : State any four dielectric materials.

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

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

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. 

Description : 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)

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)

Description : 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.

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

Description : The dielectric strength of transformer oil is expected to be?

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

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

Answer : Dielectric heating is used for heating Wood 

Description : Applications of Dielectric Heating

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%; }

Description : 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

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.

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

Answer : 66kv 

Description : 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 

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

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

Description : What is meant by belief network?

Answer : A belief network is a graph in which the following holds  A set of random variables  A set of directive links or arrows connects pairs of nodes.  The conditional probability table for each node  The graph has no directed cycl

Description : What is meant by Turing test?

Answer : To conduct this test we need two people and one machine. One person will be an interrogator (i.e.) questioner, will be asking questions to one person and one machine. Three of them will be ... Interrogator, the machine acts like a human. Programming a computer to pass Turing test is very difficult.

Description : What is meant by Monosiphonous and Polysiphonous pollen grains? Give examples. 

Answer : Ans: Pollen gains that form single pollen tube are monosiphonous. Ex: Solanum. Which form more than one pollen tubes are Polysiphonous. Ex: Malvaceae, Cucurbitaceae 

Description : What is meant by unit membrane and what is its approximate thickness? 

Answer : Ans: Any biological membrane with bimolecular lipid zone surrounded by monomolecular protein zones is called as unit membrane by Robertson. Its thickness is 75A0 .  

Description : What is meant by apposition and intussusception? 

Answer : Ans: Apposition is increase in thickness of the cell wall due to deposition of cellulose fibrils one upon the other to form the frame work. Intussusception is increase in the area of the cell wall due to deposition of non-cellulose cell wall materials between cellulose fibrils. 

Description : What is meant by closing error? How will you adjusted graphically?

Answer : Closing error : While plotting compass traverse, when first and last survey line does not coincides by some amount of distance, that distance is called as closing error. Adjustment ... . Finally join new points to get corrected traverse ABCDEA after graphical adjustment of closing error.

Description : What is meant by profile leveling and cross-sectioning ?

Answer : profile leveling : To know the nature of the ground surface the profile leveling is done along the Centre of the road at some regular intervals if required, staff readings may also be taken at points ... surface transverse to the Centre of the road. The length depend upon the nature of the work.

Description : What is meant by local attraction? How will you suspect local attraction at the field ? state its effect on included angle.

Answer : Local attraction: It is the deviation or deflection of magnetic needle from its normal position under influence of external magnetic forces is called as local attraction. Suspect of local attraction ... The needle is affected by local attraction therefore it does not give a corrected angle

Description : What is meant by orientation? Explain orientation by back sighting method

Answer : Orientation: The method of setting up the plane table at each of the successive stations parallel to the position it occupied at the starting station is known as orientation. Orientation by back sighting: ... ranging rod at A are perfect, then the orientation is said to be perfect.  

Description : What is meant by closing error? Explain graphical method of adjustment of closing error.

Answer : Closing error: The distance by which the traverse fails to close is called closing error. Step 1 ) Draw a horizontal line AA1 Equal to the length of perimeter of the traverse to a suitable scale 1) Mark ... 6) Join the the new points which gives the closed traversed. A, B, C,D and A.

Description : What is meant by surface ignition in SI engine? 

Answer : Surface ignition: Surface ignition is the ignition of the fuel-air mixture by a hot spot on the combustion chamber walls such as on overheated valve or spark plug or glowing combustion Chamber ... and start propagates across the chamber in an analogous manner to what occurs in normal knock.

Description : What is meant by sedimentary environment? give an account on Continental sedimentary environment.

Description : What is meant by geologic cycle? State the types of weathering and explain brief.

Answer : Geologic cycle: The most important of these begins with molten magma from within the earth crystallizing into rock then continues with the rock being broken down into soil and that soil then being ... the break down and decay of rock indeed their part in soil formation is of major significance

Description : What is meant by 5'S'? Explain each 'S' in details

Answer : 5 S' Concept:- 5'S is the name of a workplace organization methodology that uses a list of five Japanese words which are seiri, seiton, seiso, seiketsu and shitsuke constitute the system. ... Eliminate unwanted items. ➢ Maintain the discipline at work place ➢ Improved safety

Description : What is meant by zero circle? State the advantages of digital planimeter over polar planimeter.

Answer : Zero circle:- When the tracing point is moved along a circle without rotation of the wheel i.e. when the wheel slides without any change in reading ,the circle is known as the zero circle or ... are required for area. 3) It gives more accurate reading 4) Less time required for measurement

Description : What is meant by the statement that an animal is oviparous?  

Answer : ANSWER: IT LAYS EGGS

Description : What is meant by grade contour? How it will be located in field? 

Answer : It is the contour established on a specific grade or gradient along the hill side. OR The line joining the points of equal grade or gradient is termed as grade contour. Procedure for ... all the marked points will give us the required grade contour of 1 in 30 accurately. 

Description : What is meant by permanent adjustment of a theodolite.Enlist any two such adjustment.

Answer : A theodolite consist of several fundamental lines .In order reading to be accurate, certain desired relationship must exist between the fundamental lines of the instruments. But due to improper handling or ... axix 4 Adjustment of level tube on the telescope 5 Adjustment of vertical index frame.

Description : The problem for the research related to metaphysics can be Options: A) What is meant by existence B) What are the qualities of the existence of the objects C) How knowledge of individuality of the objects can be realised D) All the above

Answer : D) All the above 

Description : When a definition implies a proposal to use the definiendum to mean what is meant by the definiens it is called (A) Lexical definition (B) Stipulative definition (C) Precising definition (D) Persuasive definition

Answer : (B) Stipulative definition

← Prev Question Next Question →
editChoose topic
...