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What is the difference between electrodynamometer and galvanometer?
Electrodynamometer: An instrument that measures large amount of electric current by indicating the strength of repulsion or attraction between the magnetic fields of two sets of coils, one fixed and one movable. whereas, Galvanometer: An instrument for detecting and measuring small electric currents.
When was the stop watch invented?
who invented the stop watch and who invented the themomitor
What year was phonograph invented in?
The phonograph was invented in 1878. Thomas Edison invented it.
When was the sonogram invented?
The sonogram was invented when the man Walter Winston Taylor invented it
Why did they invented ring?
you invented the ring
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.
What will happen if the spring breaks in electrodynamometer?
there will be no control in the pointer hence it will show error in the readings
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.
What is the difference between electrodynamometer and galvanometer?
Electrodynamometer: An instrument that measures large amount of electric current by indicating the strength of repulsion or attraction between the magnetic fields of two sets of coils, one fixed and one movable. whereas, Galvanometer: An instrument for detecting and measuring small electric currents.
What are the types of electrodynamometer?
power meter,power factor meter, frequency meter, volt meter ,watt meter ,voltage ampere meter,
What are the different types of frequency meter?
The different types of frequency meters are :- 1. Mechanical resonance type 2. Electrical resonance type 3. Electrodynamometer type 4. Weston type 5. Ratiometer type 6. Saturable core type
Who invented the abacus when it was invented why it was invented and who invented it?
jv
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.
When invented resistor?
invented in 500BC before electricity was invented
When was the phone chargers invented?
Gloria Mejia invented it and she invented it in 1998
When was the CD player invented and who invented it?
The CD was invented in 2001 Thomas clamps invented it.
