Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Experiments conducted by Faraday and others using current carrying coils resulted in 'The Laws of Electromagnetic Induction' which state:1) 'If the magnetic flux threading through an electrical circuit changes, then an e.m.f. is induced in the circuit'. 2) 'The magnitude of the induced e.m.f. is proportional to the rate of change of the magnetic flux through the circuit'. (Faraday's Law)3) 'The induced e.m.f. has a direction such that the current which flows (or would flow if the circuit is completed) gives rise to magnetic effects that oppose the effects producing it'.(Lenz's Law)
These principle are widely used to convert mechanical power into electrical power - e.g the alternator.These are general principles that are true however the change in flux is produced. It may be due to:
The polarity of the emf produced will act to try to oppose the change causing it. If it is due to an external flux change, the induced emf will drive a current in the coil that itself produces a flux that opposes the change due to the external influence. If the flux change is due to a change in the current within the coil, the emf generated will act to oppose the change in current. This is called a 'back emf'. Faraday was able to quantify the effect and expressed the observations mathematically as:
v=-Ndq/dt (Faraday's Law)
where N is the number of turns on the coil and dq/dt is the rate of change of flux threading the coil. Effectively, each turn generates a back emf equal to dq/dt and since the emfs produced by each turn are in series, the total back emf is N times that ofeach turn considered separately
Explain the programming of 8254 microprocesser. 8254 Programming: All counters are individually programmed through writing a control word, followed with the initial count.
I want to know whether the circuits for both methods(linear polarization resistance and electrochemical impedance spectroscopy) are same or not?
A flyback converter is to be designed so that it operates in continuous "current" (flux) mode with a duty cycle of D = 0.45 when input voltage V s = 48 V, output voltage V o = 30
emitter followers regulator
register array?
GIS Applications in Management of Power Distribution Systems: a.) Inventory of existing network. b.) Easy access to network details. c.) Easy access
Probelm: (a) Explain indexed addressing in 8051. (b) How does the 8051 distinguish between a byte address and a bit address? (c) How do open-loop and closed loop appli
LKI Load Register pair Immediate Instruction This instruction is used to copy or load 16 bit data specified in the instruction directly into the register pair. The i
Q. On a per-phase basis, let v = √2 V cos ωt and i = √2 I cos (ωt - θ). (a) Express the instantaneous power s(t) in terms of real power P and reactive power Q. (b) Now consid
BLOCK DIAGRAM OF DIGITAL CONTROL OF ELECTRIC DRIVES
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd