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

What is an amplifier, Q. What is an amplifier? What are the various types o...

Q. What is an amplifier? What are the various types of amplifiers? AMPLIFIER: A circuit that increases the amplitude of the given input signal is an amplifier. A small a.c. sig

What is absolute permittivity, Absolute permittivity (ε):  Permittivity ...

Absolute permittivity (ε):  Permittivity is a capacitance or ability to kept energy of a capacitor.  A force was also generated, called as electric force and the symbol. It d

Three phase transformer., Dry type 10KVA-3ph-440/230v Dyn11. If we decide t...

Dry type 10KVA-3ph-440/230v Dyn11. If we decide to wound above such specification, what current to be taken i.e. phase current or line current 7.57A or 13.12A

Determine current for a bjt, Q. For a BJT with vBE = 0.7V, I CBO = 4 nA, ...

Q. For a BJT with vBE = 0.7V, I CBO = 4 nA, i E = 1 mA, and i C = 0.9 mA, evaluate α, iB,iSE, and β.

Determine the 60-hz resistance of line, Q A handbook lists the 60-Hz resist...

Q A handbook lists the 60-Hz resistance at 50°C of a 900-kcmil aluminumconductor as 0.1185/mile. If four such conductors are used in parallel to form a line, determine the 60-Hz r

Explain properties and application of aluminium, Explain properties and app...

Explain properties and application of Aluminium. Properties of Aluminium: 1) Pure aluminium in colour is silver white. 2) Aluminium is a ductile metal and can be put

Ohm, what is ohm?

what is ohm?

Programming, ELEC 132 COURSEWORK – ADC This work will be assessed based...

ELEC 132 COURSEWORK – ADC This work will be assessed based on program demonstration (during lab sessions) and design. You will also have to submit your c-source codes as word o

Pn diode, PN Diode The current-voltage characteristics are of major ...

PN Diode The current-voltage characteristics are of major concern in the learning of semiconductor devices with light entering like a third variable in optoelectronics devic

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