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

Obtain the z-parameters for the circuit, Q. (a) Consider the capacitor -...

Q. (a) Consider the capacitor - input filter circuit of Figure and obtain the z-parameters for the circuit. (b) Determine the transfer function V 2 /V 1 when I 2 is zero.

Explain working of ammeter, Q. Explain working of Ammeter? In order to ...

Q. Explain working of Ammeter? In order to measure the current through a wire or line of a circuit, an ammeter is connected in series with the line. A practical ammeter can usu

How phase angle measurement are carried out, Q.   Explain how phase angle m...

Q.   Explain how phase angle measurement are carried out with vector impedance meter.     Sol. Impedance measurements are concerned with both the magnitude (Z) and the phase

When both mt2 and gate are negative, When both MT 2 and Gate  are Negativ...

When both MT 2 and Gate  are Negative In this case N 3   works as a remote gate. Current  flows form layer P 2 to layer  N 3 junction N 1 P 1 is reverse biased  and it  br

Magnetic field due to an electric current, Magnetic field due to an electri...

Magnetic field due to an electric current   Let a piece of wire be arranged to pass vertically by a horizontal sheet of cardboard, on which is placed few iron filings.  If a curr

What is i/o mapping, What is I/O mapping? The assignment of addresses t...

What is I/O mapping? The assignment of addresses to various I/O devices in the memory chip is known as I/O mapping.

ET1410, MODULE 2 EXERCISE: OP-AMP CONFIGURATION

MODULE 2 EXERCISE: OP-AMP CONFIGURATION

DC motor and DC generator, write down the similarities between motors and g...

write down the similarities between motors and generators

1-phase full bridge inverter will rl load , 1- Phase Full  Bridge  inver...

1- Phase Full  Bridge  inverter will RL Load For a  resistive load R the load  current  wave form  will be  identical with load  voltage wave form  and feedback  diodes will

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