Explain the properties of high resistive materials, Electrical Engineering

Assignment Help:

Explain the properties of high resistivity materials.

High resistivity materials: The conducting materials containing resistivity from 10-6 to 10-3 ohm-m come under such category and is used for making resistance components for heating devices, rheostats and precision instruments.

Examples are: Constantian, Nichrome and Mangnesium.

Properties:

 Low temperature coefficient: In voltage drop and power loss for minimum variations with the change in temperature, such materials must have low temperature coefficient.

 High mechanical strength: These materials should withstand the mechanical stresses developed throughout its use for specific applications.

 Ductility: The material to be utilized, as conductors should be ductile so that this can be drawn and moulded in different shapes and sizes.

High melting point: These materials that are used as heating elements must have high melting point.

Oxidation resistance: The material must have an oxidation resistanceso that this must get oxidized when used in various environmental conditions.


Related Discussions:- Explain the properties of high resistive materials

Find the magnetic-field force exerted on the moving bar, Consider the arran...

Consider the arrangement shown in Figure. A conductor bar of length l is free to move along a pair of conducting rails. The bar is driven by an external force at a constant velocit

Explain temperature dependency in conductors, Explain temperature dependenc...

Explain temperature dependence of electrical conductivity and resistivity in conductors. When the temperature is increased, there is a greater thermal motion in atoms that redu

Mov instruction, MOV Instruction Op code  format  of MOV  instruction i...

MOV Instruction Op code  format  of MOV  instruction is as follows : Replace the  codes of destination register and source  register with code of  required  register from.

Determine the performance of the circuits, Many circuits, particularly ampl...

Many circuits, particularly amplifiers, use negative feedback (nfb) in order to function reliably. The nfb changes the performance of the circuit to which it is applied, in most ca

Live human detection robot, which simulation software is better for this p...

which simulation software is better for this project, and how can i simulate it?

Explain the limiting the spectrum, Explain the Limiting the Spectrum Th...

Explain the Limiting the Spectrum This low-pass filter is known an anti-aliasing filter. These filters are originated at the input to most applications. Since they are required

Compute the required value, Q. In an AM transmitter that transmits a total ...

Q. In an AM transmitter that transmits a total power of 1 kW, the unmodulated carrier power is 850 W. Compute the required value of (S i /N i )AM at a receiver, if (S 0 /N 0 )AM

Instability problem, We would like you to do an indepth study/research in t...

We would like you to do an indepth study/research in the tradeoff between the filtering of the QR and the QR performance So it will be about filtering but more of an indepth for

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd