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!
Armature Winding
In this winding the working emf is induced by the working flux.
The current which is dependent on the load called current. The windings that handles only exciting current is called field winding. Current in fields windings is always DC. It is also known as fields current of magnetizing current. It produces only a working magnetic flux. It is independent to load. Armature winding carries only load current.
Before discussing the methods of speed control of DC motor it is important to know about the classification of DC motor. According to excitation of the filed self excited DC motor further divided into three types Dc series motor shunt motor and DC compound motor.
Figure DC Motor Separately excited(b) Shunt (c) Series (d) Compound
The commonly used DC motors are shown in separately excited motor the field and armature voltage can be controlled independent of each other. In a shunt motor field and armature are connected common source. In case of a series motor fields current is some as armature current and therefore fields flux is a functions of armature current. In a compound motor the mmf of the series fields is a functions of armature current and is in the same direction as mmf of the shunt fields.
For separately excited and shunt motors it is equal to the resistance of armature windings and for series and compound motors it is the sum of armature and fields winding resistances.
How to design a single phase distribution circuit from a supply point to a load?
Explain Acceptance cone? The fibre air - core interface is display below: In this figure Omax is the maximum angle, inside that the rays undergo total internal reflecti
Explain ionic polarisation. Ionic Polarisation: It takes account of the fact that while some of the atoms in a molecule contain an excess positive or negative charge that of
Q. For DSB and conventional AM, obtain expressions for the in-phase and quadrature components x d (t) and x q (t), and envelope and phase v(t) and φ(t).
how a combination clipper works?
Features of tariff policy: For projects whose tariff is determined by performance- based cost of service regulation, the advantages of decreased tariff after full depreciation
Write a program implementing the conjugate gradient method (un-preconditioned). Solve the matrix equation corresponding to a finite difference node-spacing, h = 0.02m in x and y di
i have assignment about wien bridge oscillator i need help to how to degsin the circuit using ltpsic
Write an assembly language program to determine average of 'n' integers. Ans MOV AX, 0000; Initial sum 0000 MOV BX, 0000 MOV SI, 0201H MOV CX, [SI] BACK: I
Why do wenot see the battery and capacitor combination for power backup? Ans) There are "super capacitors" that are used for power backup - they are well-organized for short-te
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd