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

Kirchoff''s current law, Kirchoff's Current Law The total current ent...

Kirchoff's Current Law The total current entering a node in a circuit is equal to the total current leaving that node. A Node is a junction between two or more components.

Illustrate breakpoint analysis, Q. Illustrate Breakpoint Analysis? When...

Q. Illustrate Breakpoint Analysis? When a circuit consists of two or more ideal diodes, it will have several distinct operating conditions resulting from the off and on states

Principle of three-phase synchronous machines, Q. Principle of Three-phase ...

Q. Principle of Three-phase synchronous machines? In fact, with very few exceptions, three-phase synchronous machines are most commonly used for power generation. In general, t

Find a state-variable formulation, Consider a system described by the coupl...

Consider a system described by the coupled difference equation y(k + 2) - ν(k) = 0 ν(k + 1) + y(k + 1) = u(k) where u(k) is the system input. (a) Find a state-variable

Explain integral-error or reset control, Q. Explain Integral-error or reset...

Q. Explain Integral-error or reset control? A control system is said to possess integral-error control when the generation of the output in some way depends upon the integral o

What is a differentiator circuit, Q. What is a differentiator circuit? ...

Q. What is a differentiator circuit? By introducing electrical reactance into the feedback loops of op-amp amplifier circuits, we can cause the output to respond to changes in

Transformes, how to calculate the sending line voltage

how to calculate the sending line voltage

Amplifier, what is one common applicable for CB amplifier

what is one common applicable for CB amplifier

Ac link chopper - power supplies , AC Link Chopper This copper  has two...

AC Link Chopper This copper  has two  stage conversion. First DC is converted into AC  by the  use of inverter. The  magnitude of AC voltage is  varied  by the  transformer and

Transient behavior of a control system, Q. Transient behavior of a control ...

Q. Transient behavior of a control system? The transient portion of the time response of a stable control system is that part which goes to zero as time increases and becomes s

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