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How is the torque produced in electrodynamometer unidirectional?
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What is Faraday law of a DC generator?
Faraday's law : If a "conductor" is placed in a "magnetic field" the movement in either conductor or field produces an induced emf in the conductor. In generator the produced torque will be in AC(alternating current) so commutator or slip rings is used to produce unidirectional torque required for production of Direct Current. Basically by Faraday law the produced torque will be always bidirectional, for alternator the bidirectional torque can be used directly. for DC generator the unidirectional torque is needed to produce Direct Current.
What is meant by unidirectional torque?
torque basically is wat i mean to say.itz jst a twisting movement..
What is a sentence for unidirectional?
Unidirectional - Unidirectional Unidirectional Unidirectional Unidirectional Unidirectional Unidirectional Unidirectional Unidirectional Unidirectional ! HAHA :)
What are the applications of electrodynamometer its use in labs?
working principle of electrodynamometer is - when the same current passes through two concetric coils placed at right angles to each other,the resulting torque depends on the square of the current. Electrodynamometer is used to construct various instruments like voltmeters,ammeters & also for constructing AC/DC wattmeters for any waveform of current & voltage.it is also used for frequency measurements & hormonic analysis.
How is the power factor of an Electrodynamometer type wattmeter improved?
Power Factor of an electrodynamometer can be improved by connecting a large resistor in series with the current coil.
How does a electrodynamometer work as a voltmeter?
An electrodynamometer can work as a voltmeter by judging the wavelength and force of the electricity, much the same at the voltmeter, then converting it to a force that is more recognizable.
How do you use unidirectional in a sentence?
The microphone is unidirectional. The committee had a unidirectional approach to the problem and not everybody was satisfied.
How is torque related to power?
Torque is the cars power, horsepower is only the rate at which the torque is produced.
What is starting torque?
The torque which is produced during the starting of motor is simply called as starting torque.
Is unidirectional a noun?
No, "unidirectional" is not a noun. It is an adjective that describes something moving or operating in one direction.
How is torque produced in a dc motor?
torque = force x Radius of the armature
Explain Working principle of electrodynamometer type of instrument?
The working principle of a basic electrodynamometer instrument is same as the PMMC instrument. The only difference in this case is that the permanent magnet is replaced with two fixed coils connected in series. The moving coil is also connected in series with the fixed coils. The two fixed coils are connected to electromagnets in such a manner that they form poles of opposite polarity. As the moving coil carries current through it and is being placed in the field of fixed coils, it experience a force due to which the moving coil rotates. The direction of this force is independent of the supply voltage as the current flowing through fixed coils and moving coil is one and the same. If the direction of current changes in the moving coil, then the field direction also changes, thus making the torque unidirectional.
