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!
Explain the Cylindrical or Round Rotors?
All synchronous machines have a similar stator design and it is actually the rotor construction that makes them different. The rotor is also made of punched laminations that are stacked together for the same reasons as in the stator case. There are the two main types of rotor design. For high-speed operation, the 2-pole or 4-pole cylindrical or round rotors are commonly used with slots on their periphery to house the field windings (for 50-Hz supply, the respective speeds are 3000-rpm and 1500-rpm as indicated by the above expression). Figs.2 and 3 show the construction and winding arrangement of such rotors.
Figure: 4-pole round rotor with a field winding
Figure: Finite Element (FE) models and structure of 8-pole diesel generator (left) and 2-pole turbo-generator (right)
For this machine type the air-gap is approximately constant (ignoring slotting effects). If operated as a generator, the prime mover is normally a steam or gas turbine rotating at 22000-rpm coupled through a speed reduction gearbox or, for smaller machines, a direct-coupled diesel engine. Due to high operating speeds and consequent relatively large centrifugal forces, there is normally a design limit imposed on the rotor diameter. Hence rotor length to diameter ratios of, say, 6:1 are typical for round rotors with the axis of rotation being always horizontal.
The paper should be written in the format of a paper to be submitted to a conference (IEEE). There should be a minimum of three journal paper references. The topic should be a disc
Mini Computers Larger computer more computing power having capability to address more memory and more speed than microcomputer called minicomputer. These computers
Importance of Voltage Quality - KPI The voltage quality has a growing economic impact on the customer and the network operators. The costs related along with "lack of quality"
Energy conservation: NEP envisages a voluntary approach initially for promoting energy conservation along with emphasis on labelling of appliances. Gradually as awareness incr
Common Source Amplifier A common-source amplifier is one of three basic single-stage field-effect transistor abbreviated as FET amplifier topologies, commonly used as a volta
ADC Instruction This instruction is used to add the contents of any register of any register memory location and carry flag with the contents of accumulator and result i
the forward resisitance of a semi conductor diode is 10 ohm, two such diodes used in full wave rectifier subjectto a sinusoidal voltage wave form. given by v(t)=308 , sin(100 pi t)
Explain Ferrimagnetic magnetic materials. Ferrimagnetic Materials: In such materials unequal magnetic dipoles are lined up anti-parallel to each other. And permeabilities are
Design a logic circuit with 4 inputs A, B, C & D that will produce output ‘1’ only whenever two adjacent input variables are 1’s. A & D are also to be treated as adjacent, impleme
Q. What is an oscillator? Discuss the advantages of Oscillators ? An oscillator is a system consisting of active and passive circuit elements to produce a sinusoidal or other r
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