Special resistor materials: constantan, Physics

Assignment Help:

Constantan: Constantan is a copper-nickel alloy. The amount of nickel in constantan is 40%.

Properties:

1.      It is silver like appearance.

2.      Its electrical resistivity is 5.2*10-8 ohm-m.

3.      Its SPECIFIC gravity is 8.9.

4.      Its melts at 1300 degree c.

5.      The maximum permissible working temperature is about 500 degree c.

6.      It can be drawn into thin wires.

7.      It is highly corrosion resistant.

USES: It is used for making resistance elements for items like loading rheostats and starters for electric motors. It is also used in thermocouples.

 

 


Related Discussions:- Special resistor materials: constantan

What is reluctance?, It is the opposition offered by the material of the fl...

It is the opposition offered by the material of the flux. Reluctance α mean length of flux path and reluctance α 1/cross section A Reluctance=1/μ 0 μ r A Here μ 0 a

Simple harmonic motion, what are the necessary conditions for a body to exe...

what are the necessary conditions for a body to execute simple harmonic motion?

Draw the symbolic representation of a p-n-p and n-p-n, Draw the symbolic r...

Draw the symbolic representation of a (i) p-n-p, (ii) n-p-n transistor. Why is the base region of transistor thin and lightly doped? With proper circuit diagram, show the biasin

State pressure law, "The pressure of a needed mass of gas at constant volum...

"The pressure of a needed mass of gas at constant volume differs directly as its Kelvin Temperature",

LINEAR MOTION, what does slope of the tangent drawn on velocity -time graph...

what does slope of the tangent drawn on velocity -time graph at any instant of time give?

Explain terminal velocity, When a spherical body goes by a viscous fluid, i...

When a spherical body goes by a viscous fluid, it feels a viscous force. The value of the viscous force increases with the enhance in speed of the object falling under the function

Malus law, state and explain malus law?

state and explain malus law?

Role of magnetic field in generating ultrasonic waves, Role of Magnetic fie...

Role of Magnetic field in generating ultrasonic waves Magnetic field is applied parallel to the length of a ferromagnetic rod made of material as like iron or nickel, a small e

Solar cells: semiconductor devices, A solar cell or photo voltaic cell is a...

A solar cell or photo voltaic cell is a semiconductor device that converts photons from the sun into electricity. It can also be defined as a semiconductor electrical junction appa

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