Ajaya Kumar Kavala
Research Scholar
Department of Physics
IIT Patna


Introduction of Dielectrics

Dielectric is an entity ,in which equal positive and negative charges separated by equal small distance.
In which each molecule has permanent dipole moment P
This type of materials are known as polar materials
Different molecules has different different directions of the dipole moment.
In Non polar materials ,The centre of the positive charge distributution in an atom or molecules coinci ....etc

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ELECTRIC HEATING



When current is passed through a conductor, the conductor becomes hot. When a magnetic material is brought in the vicinity of an alternating magnetic field heat is produced in the magnetic material.

Similarly it was found that when an electrically insulating material was subjected to electrical stresses, it too underwent a temperature rise (Dielectric heating).

Convection is the transfer of heat by the actual movement of the warmed matter.

Convection is the ....etc

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Submitted by: -
SHASHI KUMAR .K




INTRODUCTION
Electrical heating is based on the principle of that
when electric current passes through a medium
heat is produced. Let us take the case of solid
material which as resistance R ohms and current
flowing through it is I amps for t seconds than heat
produced in the material will be H=I Rt Joules.

DOMESTIC APPLICATIONOF ELECTRICAL HEATING
Room heater fo ....etc

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to get information about the topic electric heating full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-electric-heating

http://seminarsprojects.net/Thread-electrical-heating-methods ....etc

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H-Shaped Dielectric Resonator Antenna for UWB application



INTRODUCTION
The extremely wide spectrum of 3.1 to 10.6 GHz with 15 bands of bandwidth greater than 500 MHz and power limit less than -41.3 dBm/MHz announced by FCC for Ultra wide band. The release of this Spectrum has rapidly increased the research in UWB technology for communications, radar imaging, and localization applications . Radio systems based on UWB technology offer opportunities for transmission of high data r ....etc

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The High frequency attenuation in shielded distribution cable has been extensively studied. But in the case of solid dielectric cable, this has not been done. A solid dielectric cable has a bit more complex structure including the semiconducting bedding layers and a moisture barrier.high frequency loss is created by these sources.The purpose of these bedding layers is to seal the cable against moisture ingress and also accomodate for the thermal expansion of the cable. The cables studied here are the ones with a corrugated copper sheath and ....etc

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Abstract
The need of low-loss substrate materials with stable dielectric performances over a wide frequency range is a strong
requirement when working at millimeter frequencies, where standard dielectric substrates exhibit prohibitive losses. In
this contribution, the authors focus their attention on a polymer material, the benzocyclobutene (BCB), having a low
dielectric constant equal to 2.65, and a low loss tangent, equal to 0.0008 at 1 GHz, with a stable dielectric behavior
over a broad frequency range, up to THz. The use of BCB ....etc

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to get information about the topic electric heating resistance heating induction heating dielectric heating arc furnaces principle applicationsrelated topic refer the page link bellow

http://seminarsprojects.net/Thread-electrical-heating-methods ....etc

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to get information about the topic starting methods induction motor full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-single-phase-induction-motor?pid=53213&mode=threaded

http://seminarsprojects.net/Thread-parameter-identification-of-induction-motor-using-modified-particle-swarm-optimizatio

http://seminarsprojects.net/Thread-speed-control-of-three-phase-induction-motor-using-dspic30f4011 ....etc

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Biasing a diode means applying appropriate DC voltage to a diode. A forward biased diode conducts
easily whereas reverse biased diode practically conducts no current. It means that forward resistance of a
diode is quite small as compared with its reverse resistance.
Forward current is the current flowing through a forward biased diode. Every diode has a maximum
value of forward current, which it can safely carry. If this value is exceeded, the diode may be destroyed
due to excessive heat. Reverse current or leakage current is the current t ....etc

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