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!
Define Salient-pole Rotor Construction - Synchronous Machines?
Salient-pole rotor construction on the other hand, may be used for low to medium speed applications. The machines of this kind are normally multi-pole and have a variable air- gap width. The prime mover is usually a direct- coupled water turbine (as in the Dinorwig pumped-storage scheme previously mentioned) with several 12-pole motor/generators.
Figure: 2-pole (a) and 4-pole (b) salient rotors
The rotor diameter is large and its length is quite short whereas the axis of rotation is often vertical to suit the water turbine. However, whatever the rotor (and machine) type, it must be wound for the same number of poles as the stator. The rotor winding carries DC current to produce constant flux per pole. It is therefore the rotation of the rotor with respect to the stator that causes the induction of voltage in the stator windings. The 3-phase stator currents themselves produce another revolving field in a manner analogous to a conventional induction machine. This field rotates at the same speed as the rotor so that it is stationary with respect to the rotor field. It is the magnetic interaction between these two fields that results in the torque production of the machine.
(a) contains a freewheeling diode Dm, commonly connected across an inductive load to provide a path for the current in the inductive load when the switch S is opened after time t (
Q. What Are the Differences Between Enhancement And Depletion Mosfet? Depletion MOSFET:Here a slab of p_type material is formed from a silicon base and referred to as substrate
Q. Explain about Common Control Switching System? Common Control Switching System: A functional block diagram of a common control switching system is displayed in Figure. Contr
Transparent latch D flip Flop A typical example of this type of D flop is 7475 shown in figure when CLK connected is enable signal is high and the flip flop is enabled
Q. Explain working of Common drain amplifie? When an ac signal drives the gate of JFET, it produces an ac drain current. It flows through Rs and produces an ac output voltage t
i need a line diagram sample of a large network, i need to practice how to draw and design such network
Illustrate Common Emitter configuration, current amplification factor and collector amplifier. Describe transistor as an amplifier.
Space communication - Application of Software Defined Radio Software defined radio can save cost of missions while constructing multiple mode, multiple band radio systems that
what is crossmagnetisation in dc generator
Q. If it is desired to store English-language writing with 1 byte representing each letter, find the minimum number of bits per byte that could be used. Ans. For the 26 le
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