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

Define byte assembler directive, What do you understand by DB assembler...

What do you understand by DB assembler directive?   DB (Define Byte): The DB directive explains by a byte-type variable (that is a variable that occupies one byte of memo

Ampere''s theorem, The    French    scientist,    Ampere,    (1775- 1836), ...

The    French    scientist,    Ampere,    (1775- 1836), conducted a series of experiments on the force between current carrying conductors. He found that: force per metre of wire (

Electrical machine -i, What are the causes of sparking in the commutator? E...

What are the causes of sparking in the commutator? Explain the methods to reduce the sparking in the commutator?

What is meant by interrupt, What is meant by interrupt? Interrupt is an...

What is meant by interrupt? Interrupt is an external signal that causes a microprocessor to jump to a particular subroutine.

Explain electric polarization, Explain electric polarization. Electr...

Explain electric polarization. Electric polarization : This polarization density is the vector field such expresses the density of permanent or induced electric dipole momen

1-phase half bridge inverters, 1- Φ Half Bridge Inverters 1-Φ bridge  ...

1- Φ Half Bridge Inverters 1-Φ bridge  inverter may be  of two  type 1-? half  bridge  and 1-? full  bridge  inverter. 1-? half bridge  inverter with resistive load to explain

Working of a negative clamping circuit, Q. Draw and explain the working of ...

Q. Draw and explain the working of a negative clamping circuit. The clamping network shown above is a negative clamping circuit that will clamp the input signal to a negative d

Objective of long-term plans for technical loss reduction, Objective of Lon...

Objective of Long-Term Plans for Technical Loss Reduction The primary objectives of strengthening and improvement of sub-transmission and distribution system in the long-term

Determine the motor current and speed, A dc series motor is connected to a ...

A dc series motor is connected to a load. The torque varies as the square of the speed.With the diverter-circuit open, the motor takes 20 A and runs at 500 r/min. Determine the mot

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