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

Why negative feedback is employed in wein bridge oscillator, Q. Why negativ...

Q. Why negative feedback is employed in Wein Bridge Oscillator. Also explain the working of oscillator? The Wein Bridge Oscillator consists of two stages of the RC coupled ampl

Determine the current needed in the coil to produce a flux, Q. Consider the...

Q. Consider the magnetic circuit shown in Figure. Assume the relative permeability of the magnetic material to be 1000 and the cross-sectional area to be the same throughout. Deter

Characteristics of common drain amplifier, Normal 0 false fal...

Normal 0 false false false EN-IN X-NONE X-NONE

Determine the actual attenuation , (a) Design a passive high pass filter th...

(a) Design a passive high pass filter that has a maximally flat response with a 50  Ω resistive load. Assume that the cut-off frequency is 40 kHz and that at a frequency of 25 kHz,

Discuss the benefit and limitations of utilizing wind energy, a. Discuss th...

a. Discuss the benefits and limitations of utilizing wind energy for electricity generation. b. Draw the block diagram representation of a thermal power generation unit. Illustr

Guarding Against Loss in Transformers, Guarding Against Loss in Transformer...

Guarding Against Loss in Transformers Distribution transformers are expected to convert up to 95-98% of the input power into usable output power. A distribution transformers i

Matlap code, matlap code to solve the fast decoupled method

matlap code to solve the fast decoupled method

Find the output voltage in terms of the input voltage, Q. Find the output v...

Q. Find the output voltage in terms of the input voltage? In order to illustrate the insensitivity of feedback circuits to variations of the op-amp parameters, let us consider

Depletion zone in p-n junction, Depletion Zone in P-N Junction The pow...

Depletion Zone in P-N Junction The power of the depletion zone electric field gets increases as the reverse-bias voltage increases. One time the electric field intensity incre

D.C. generator, I have made a wind turbine with vertical blades. I want to ...

I have made a wind turbine with vertical blades. I want to rotate magnets on the rotor with the coils being stationary.How do I wind the coils and must the magnets be N/S opposite

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