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What else can I help you with?
What is working principle of synchros?
when rotor excited by ac voltage , the rotor current flow , and a magnetic field is produced .the rotor magnetic field induced an emf in the stator coils by transformer action.the effective voltage induced in any stator coildepend upon the angular position of te coil's axis w.r.t rotor axis sthitaprajna.rath@gmail.com
How do you connect a diode across a ac coil?
You mean ac coil, the secondary coil, of a transformer? Then for the purpose of rectification, that is , for changing ac into dc, a diode is connected in series with the secondary coil of the transformer.
Derive emf equation of a DC machine?
equation of ac machine
What is coil pitch?
The distance between the two sides of an individual coil of and AC armature winding id termed the coil pitch.
What are main components of ac generator?
north and south magnets, a coil, commutators, output, and a handle LOL
What is the difference between ac and dc generators?
AC generator, the brushes run on slip rings which maintain a constant connection between the rotating coil and the external circuit. This means that as the induced emf changes polarity with every half-turn of the coil, the voltage in the external circuit varies like a sine wave and the current alternates direction. DC generator, the brushes run on a split-ring commutator which reverses the connection between the coil and the external circuit for every half-turn of the coil. This means that as the induced emf changes polarity with every half-turn of the coil, the voltage in the external circuit fluctuates between zero and a maximum while the current flows in one constant direction
What is working principle of synchros?
when rotor excited by ac voltage , the rotor current flow , and a magnetic field is produced .the rotor magnetic field induced an emf in the stator coils by transformer action.the effective voltage induced in any stator coildepend upon the angular position of te coil's axis w.r.t rotor axis sthitaprajna.rath@gmail.com
If the primary winding of a double wound transformer is supplied with the direct current its iron core will become magnetized but there will be no emf induced in the secondary winding?
BECAUSE YOU NEED AC EFFECT TO INDUCE EMF IN TO SECONDARY WINDING.OR DC PULSING.
How do you connect a diode across a ac coil?
You mean ac coil, the secondary coil, of a transformer? Then for the purpose of rectification, that is , for changing ac into dc, a diode is connected in series with the secondary coil of the transformer.
What is the difference between an AC and DC generators?
AC generator, the brushes run on slip rings which maintain a constant connection between the rotating coil and the external circuit. This means that as the induced emf changes polarity with every half-turn of the coil, the voltage in the external circuit varies like a sine wave and the current alternates direction. DC generator, the brushes run on a split-ring commutator which reverses the connection between the coil and the external circuit for every half-turn of the coil. This means that as the induced emf changes polarity with every half-turn of the coil, the voltage in the external circuit fluctuates between zero and a maximum while the current flows in one constant direction
What is Self induced emf?
when switch is closed then ac current flows in circuit. ac current is varies with the time as we changes the value of resistances ,current also changes because of this magnetic flux is introduced and result in induced emf generating in same circuit.
What is the Opposition to current flow in a inductive ac circuit?
Back EMF.
Derive emf equation of a DC machine?
equation of ac machine
What happens when a wire is looped into a coil?
When you wind a current carrying wire into a coil, it causes the concentration of the magnetic field line to intensify. Depending on which pole of the magnet is in the up position, the wire will move towards or bend away from it.
The back emf indcuced in the armature is AC or DC?
only in dc motor...
What is the ac coil in home ac units?
The coil are responsible for transferring of cool air trough the unit
What is reason behind using dc emf in compare to ac emf?
The main reason for using ac is safety. ac as more safe than the dc as it passes through zero in every half cycle. There are many other reasons like, ac can be transmitted for longer distances efficiently we can use the Induction motor.
