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.
A seperately excitd 2pole dc generator consitstng of many cnoductors rotating in magneti2 field producd by field coils with no load connected to it
no
A revolving armature type refers to a design used in electrical machines, such as generators and motors, where the armature (the coil or winding that carries current) rotates within a stationary magnetic field. This design enhances efficiency and power output by allowing the armature to cut across magnetic lines of force, generating voltage or torque. In this configuration, the magnetic field can be produced by either permanent magnets or electromagnets, depending on the application. This type of design is commonly seen in various applications, including alternators and DC motors.
The science revolving around building devices on an extremely small scale is called Nanotechnology.
Yes
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.
Ferrari
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.
The revolving field theory of single-phase induction motors suggests that a rotating magnetic field created by current flowing through two windings (main and auxiliary or starting winding) produces a starting torque in the rotor. This theory explains how single-phase motors can operate without the need for a separate rotating magnetic field, as in three-phase motors, by using a split-phase or capacitor start design to generate a rotating magnetic field.
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.
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.
Give the 5 reasons for the preference of revolving field alternators over the revolving armature type of machine?
Its the Heliocentric Theory
Its the Heliocentric Theory
heliocentric
This is known as the heliocentric theory, first proposed by Aristarchus two millenia ago.
The direction of a revolving magnetic field can be reversed by changing the direction of the current flowing through the stator windings in an electric motor or generator. By reversing the phase sequence of the currents in the stator windings, the direction of the revolving magnetic field can be changed. This can be achieved using control circuits or devices that can switch the direction of the current flow.