Thermal –root , Electrical Engineering

Assignment Help:

A moving coil galvanometer consists of a coil  in a uniform magnetic field Bo, suspended fro a fibre of torque constant C, current I produces a deflection O=nABoi/c where n is the number of turns  and A is the area of the coil. The period of oscillation T=2?(I/C)1/2 where I is the moment of inertia. The resistance of the coil and the circuit in which it is placed is adjusted to give a critical dumping Rc=n2 A2Bo2/2(ic)1/2 . if the minimum detectable current produces deflection equal to thermal -root mean square value O, show that minimum current is given by

imin  =( ?KT/ TRc)1/2

 


Related Discussions:- Thermal –root

Superposition, what is the purpose of superposition theorem

what is the purpose of superposition theorem

What is photovoltaics?, Photovoltaics  is a high-technology approach  to ch...

Photovoltaics  is a high-technology approach  to changing sunlight  directly  into  electrical  energy.  The  electricity  is direct  current  and  can  be  used  that  way,  chnag

Priming, short note on priming

short note on priming

Explain the principle of a thermocouple, Explain the principle of a thermoc...

Explain the principle of a thermocouple. Give two examples of some common thermocouples. Thermocouples : They are used for the measurement of temperature. While two wires of v

Explain the suitability of aluminium, Explain the suitability of aluminium ...

Explain the suitability of aluminium  that is used as electrical conducting materials. Aluminium : Conductors are appropriate for ambient and very high temperature. Use of alu

Ac waveform, which ckt. Or components using for irregular ac sine wave ...

which ckt. Or components using for irregular ac sine wave change into pure sine wave.......

Digital electronic, What are the advantages of wired-AND connection of digi...

What are the advantages of wired-AND connection of digital IC

What is time switches, Q. What is Time Switches? Principle of a time sw...

Q. What is Time Switches? Principle of a time switch is displayed in Figure. It connects an incoming n channel PCM highway to an outgoing n channel PCM highway. As any incoming

Give an account on the operation of the oupled amplifier, Q. Give an accoun...

Q. Give an account on the operation of the R-C coupled amplifie r. When a.c. signal is applied to the base of the first transistor, it appears in the amplified form across its c

Explain how to represent power lines, Explain How to Represent Power Lines?...

Explain How to Represent Power Lines? The equivalent circuit of a power line depends on the length of the line and on the accuracy of the model required. In general, any power

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