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

A, what is electron

what is electron

Advantages of high transmission voltage, Advantages of high transmission vo...

Advantages of high transmission voltage  A) Decreases volume of conductor material: B) Enhance in transmission efficiency C) Reduces percentages line drop

How do you calculate tensile strength, How do you calculate tensile strengt...

How do you calculate tensile strength? Tensile strength isn't really measured; it's calculated. It is explained as the point at which a sample of material fails when subjected

Angular Acceleration of Earth, 2. The earth’s rotation about its axis chang...

2. The earth’s rotation about its axis changes measurably over time; see http://en.wikipedia.org/wiki/Leap_second and http://en.wikipedia.org/wiki/Tidal_acceleration for detai

Explain resolving power of an astronomical telescope, Explain the term 'res...

Explain the term 'resolving power' of an astronomical telescope. How does it get affected on 1. Enhancing the aperture of the objective lens? 2. Enhancing the wavelength of t

Explain new terms for describing motion, Explain New Terms for Describing M...

Explain New Terms for Describing Motion As mentioned in the last chapter, the mass of a cannonball is a measure of the amount of matter (in kilograms) that would balance agains

Electromagnetic waves, Find amplitude of electric field ina parallel beam o...

Find amplitude of electric field ina parallel beam of light of intensity 2W/m2 Ans: Given that intensity I=power/area=2W/M2 by using this formula :intensity I=(Emax^2/2c mue not

Determine the equivalent and reaction force, When a plane is in flight, the...

When a plane is in flight, the entire weight of the aircraft is essentially supported by the wings. To help you with this problem, it will be best if you visualize holding a model

Define kepler''s laws, Johannes Kepler revealed three empirical laws by usi...

Johannes Kepler revealed three empirical laws by using the data on planetary motion, pertaining to the orbit of planets. These laws are contained here because of the huge importanc

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