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What is the difference between current and voltage commutation?
Wiki User
∙ 11y ago
Voltage commutation: This is possible in ac circuits...The thyristor gets turned off by reverse bias (negative half cycle) voltage applied across it. This is also called line commutation.
Current Commutation: This is possible in dc circuits ...This type of commutation makes use of auxiliary circuit which contains inductor,capacitor,diode and even a thyristor(auxiliary). This is called Forced commutation.
Wiki User
∙ 11y ago
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What is produced first current or voltage?
current flows as a result of potential difference i.e. in a circuit if there is no voltage difference between two points, no current can flow between those two points. So voltage has to be produced first.
What is the difference between voltage ang current?
voltage: it is the potentail difference between two wires. or it is the amount of energy used to force the electrons.current: it is the flow of free electrons.by Balaji,NITCAnswerThere is no such expression as 'potential voltage'. 'Voltage' is simply another word for 'potential difference'.
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
What is the difference between an electrical surge and a brownout?
A surge is an over voltage and over current situation and a brownout is an under voltage situation.
Why current and voltage are not equal?
Current means flow of electrons Whereas the difference between two points is the voltage difference. Example: when you hold a filled jug of water at a certain height, it is the voltage. Because there is some difference of water at you end and the ground. But when you start pouring the water from the jug, water will fall on the ground which can be said a current.
What is produced first current or voltage?
current flows as a result of potential difference i.e. in a circuit if there is no voltage difference between two points, no current can flow between those two points. So voltage has to be produced first.
How does voltage commutation work in DC machine?
In voltage commutation process, the introduction of interpoles between main poles compensate armature mmf and reduces the effect of armature reaction.
What is the difference between voltage series and current series amplifier?
The main Difference between Voltage and Current Feedback Amplifiers is in the sampled(Output) signals. In Voltage feedback the sampled signal is voltage (Vf=Beta*Vo) where Vo is the sampled signal and for current feedback it is current signal (Vf=Beta*Io).
What is difference between 0.8 leading and 0.8 lagging power factors?
Power factor measures the phase difference between voltage and current. If they are in phase the Power Factor is one. If the current and voltage are out of phase the power factor is between zero and one. You can describe the PF by saying the current lags the voltage with a PF = .8 or the voltage leads the current with a .8 PF.
What is the difference between ac voltage and dc voltage?
access current ( like plugs in your house ) direct current (like batteries)
How commutation can be improve?
Generally there are two methods of improving Commutation :- 1.Resistance Commutation 2.Emf or Voltage Commutation The Commutation can also be improve by using interpoles and compensating windings.
What came first the voltage or the current?
For a current to flow between two points, those points must have a potential difference (voltage) across them.
What are the functions of current transformers and the difference between current transformers and voltage transformers?
To sense the current flow across the current transformers and to monitor the current ratings. In current transformers no voltage variations occurs. but in voltage transformers it is mainly used to increase or decrease the voltage value.
What is the Difference between voltage controlled device and current controlled device?
The difference between a current control device and voltage controlled device is that for current controlled device, the current is constant and the voltage is variable while for a voltage controlled device, the voltage is constant and the current is variable.
What is the difference between voltage ang current?
voltage: it is the potentail difference between two wires. or it is the amount of energy used to force the electrons.current: it is the flow of free electrons.by Balaji,NITCAnswerThere is no such expression as 'potential voltage'. 'Voltage' is simply another word for 'potential difference'.
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
What is the term for the potential difference in a charge between two point in a current path?
voltage
