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What The earth revolving around the sun is what theory?
This is known as the heliocentric theory, first proposed by Aristarchus two millenia ago.
What year did Michael Faraday invent the electromagnetic induction?
On 29th August 1831 Michael Faraday discovered the theory of Electromagnetic Induction.
Why single phase induction motor has pulsating torque?
according to a mathematical theory the flux produced when an alternating current flows in a single phase winding , this flux is composed of tow equal components which result in tow equal torques , these torques work in opposite direction to each other , hence one causes the rotor to move in a certain direction while the other in the opposite direction . this is the reason why a single phase induction motor instead of its rotor to move in one direction it vibrates. the resultant of these torques is zero. if the motor is caused to move by an external mean say by hand , then the resultant will no longer zero and the motor continue revolving and it speeds up even the external mean is removed, For a single phase induction motor to be a self starting motor some techniques are used like connecting an additional winding called auxiliary winding and a capacitor which in some designs removed automatically when the motor speed come to a certain value while for other designs these elements continue to be connected . Any single phase induction motor is provided by a starting technique so if it vibrates , then this means that the technique is failed
What theory states that homo sapiens began in a single geographical area and spread out from there?
Out of Africa theory
What term is associated with single celled theory?
line of descent
What is Cross field revolving theory?
Cross field revolving theory is the theory which discuss the cause of single phase induction motor not to be self starting. According to it, two different forces of same magnetude acts on the rotor in just opposite direction.Which makes the rotor standstill.
What is cross field theory?
Cross field revolving theory is the theory which discuss the cause of single phase induction motor not to be self starting. According to it, two different forces of same magnetude acts on the rotor in just opposite direction.Which makes the rotor standstill.
Theory for brake test on three phase induction motor?
why three phase induction motor is delta connected
The earth revolving around the sun is what kind of theory?
Its the Heliocentric Theory
What kind of theory is the earth is revolving around the sun?
Its the Heliocentric Theory
Explain in detail the constructional details of three phase induction motor?
The stator of an induction motor consists of poles carrying supply current to induce a magnetic field that penetrates the rotor. To optimize the distribution of the magnetic field, the windings are distributed in slots around the stator, with the magnetic field having the same number of north and south poles. Induction motors are most commonly run on single-phase or three-phase power, but two-phase motors exist; in theory, induction motors can have any number of phases. Many single-phase motors having two windings can be viewed as two-phase motors, since a capacitor is used to generate a second power phase 90 degrees from the single-phase supply and feeds it to the second motor winding. Single-phase power is more widely available in residential buildings, but cannot produce a rotating field in the motor, so they must incorporate some kind of starting mechanism to produce a rotating field. There are three types of rotor: squirrel cage rotors made up of skewed (to reduce noise) bars of copper or aluminum that span the length of the rotor, slip ring rotors with windings connected to slip rings replacing the bars of the squirrel cage, and solid core rotors made from mild steel. For information on die-cast copper rotors in energy-efficient induction motors, see: Copper die-cast rotors.
The earth revolving around the sun is a(n) theory.?
heliocentric
What theory does the moving magnet work to produce current?
Faraday's Theory of Electromagnetic Induction.
Name the person who gives the concept of double revolving field theory?
Ferrari
What The earth revolving around the sun is what theory?
This is known as the heliocentric theory, first proposed by Aristarchus two millenia ago.
What is double revolving theory?
The double field revolving theory states that, any alternating quantity can be resolved into two rotating components, which rotate in opposite directions and each having a magnitude as half of the maximum magnitude of the alternating quantity.
Why a single phase induction motor is not self starting?
Single phase induction motor is not self starting because, when the main winding is excited from a single phase supply, it produces an alternating magnetic field instead of rotating magnetic field in two phase and 3 phase induction motor. According to double field revolving theory any alternating vector can be resolved into two vectors rotating in opposite directions, each having magnitude equal to one half the magnitude of the actual vector. The vectors will be rotating in such a way that their resultant will be zero at every instant. Thus a single phase induction motor fails to produce a net starting torque, and is not self starting.It can be made self starting by any of the methods below1) By using an aux winding in series with a very high resistance2) using two capacitors,in series with the aux wdg,one with intermittent duty and the other one with continuous duty3) Using shaded poles
