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.
Torque-Speed Characteristics of 3-Phase Induction Motors
What do you mean by Bezier curve? Shown B0 (1,1), B1 (2,3), B2 (4,3), B3 (3,1) the vertices of Bezier polygon, calculate seven points on Bezier curve. Write in brief the differe
Subtract Registers and Borrow from Accumulator The contents of the register and borrow flag are subtracted from the contents of the accumulator and the result is store
There are four basic types of sweeps: (a) Free Running or Recurrent Sweep: in the free running or recurrent sweep, the sawtooth waveform is re
Q. (a) For a JKFFwith JK = 11, the output changes on every clock pulse. The change will be coincident with the clock pulse trailing edge and the flip-flop is said to toggle, when T
Q. Explain Periodic Signals and Fourier Series? In the study of analog systems, predicting the response of circuits to a general time-varying voltage or currentwaveformx(t) is
Memory Address The memory address is of 16 bits. It ranges from 0000?H to FFFH 16bits address lines of 8085 microprocessor are capable of addressing 216 i e 65, 536, ( or
L filters: An L filter contains two reactive elements that are one in series and one in parallel. T and π filters: Main article: Capacitor-input filter
Dissemination of Learning - KPI Management has initiated a program, consequently invested a considerable amount of resources and learnt a lesson too. This learning now needs t
LT Metering or Low Tension Metering The subsequent types of meters are generally used for LT consumers: Whole Current Meters i) Single phase meters ii) 3-phase
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