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How do you proof of the existence of back emf ?
Md.shazzadHossain Sh...
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Does motional emf call induced emf?
yes indused emf is also called motional emf. If an open coil is subjected to a variable magnetic field, at the ends of the coil a potential difference is induced which is called induced emf. If a coil is connected to an emf source and switched on, the rising current will produced an variable magnetic field which in turn produces an emf. It is called back emf.
What does an increase in field strength in a dc generator causes a?
increased Back emf
How do you find average back emf?
Normally emf can be calculated by the following formula e=N*(dф/dt) where dф/dt = rate of change of flux linkages In actual practice it is given as e=-[N*(dф/dt) ] because as per lenzs law the voltage induced in a direction to oppose the very cause for it i.e., change in flux linkages. vydehi
How are emf measured?
emf in volts
While discharging which is greater TPD or EMF?
EMF is greater
What is the emf equation of induction motor and prove it?
f=4.44fqm
What did the line spectrum prove the existence of?
the existence of released energy
Can back emf in an inductor be in the same sense as emf of source?
yes..only the application is different.
Does motional emf call induced emf?
yes indused emf is also called motional emf. If an open coil is subjected to a variable magnetic field, at the ends of the coil a potential difference is induced which is called induced emf. If a coil is connected to an emf source and switched on, the rising current will produced an variable magnetic field which in turn produces an emf. It is called back emf.
Can you prove that fairies are not real?
No. Any person trained in logic will tell you that 'you cannot prove a negative'. If you want to disprove the existence of fairies you first attempt to try and prove their existence. And the best you can do is to fail to prove it. The option to prove it always exists.
What is Counter Force?
It is also called back EMF. Back EMF is the electric potential difference that opposes the current that induces it. See related link below.
Does null vector have real existence?
No. But then can you prove that you do?
What is Back emf of DC motor?
In dc motor, the armature conductors are revolving in the magnetic field and emf is induced in the armature conductors. The direction of the induced emf is in opposite direction to the applied voltage as per Flemings left hand rule. So, the induced emf in motor is called as back emf or counter emf. Vydehi
What is counter electro-magnteic force?
It is also called back EMF. Back EMF is the electric potential difference that opposes the current that induces it. See related link below.
What is emf induced in a motor's coil that tends to reduce the current in the coil of the motor?
BACK emf induced in a motor's coil that tends to reduce the current in the coil of the motor. The answer should be 'back'.
Did spirituality help prove magic does exist?
No. Spirituality is essentially the belief in a spiritual existence, which may or may not include magic. Even if it does, belief in something does not prove its existence.
What is the Opposition to current flow in a inductive ac circuit?
Back EMF.
