0
what does it mean by rotating amplifier and how it works?
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why is excitation necessary for synchronous generators?
generators work by rotating a magnetic field thru a wire shell or by rotating wire thru a stationary magnetic field (think of a small DC motor with magnets around the shell) since large generators dont have magnets in them (its not very efficent)you have to send a flowing current thru the rotating coils to produce the magnetic field. this induces current in the stator and you have a generator..of course the same effect is produced by inducing a current in the stator and pulling the output from the rotor.
How do you generate sinusoidal voltage?
The most common ways are:Mechanically, by placing a coil in a rotating magnetic field, or a rotating coil in a fixed magnetic field. This is how AC power is generated.Electronically, using an oscillator circuit. This is how sinusoidal waveforms are produced in all sorts of electronic equipment.
Can a rotating masonry drill bit adjacent to a cable create a magnetic field and could it disrupt the electrical current within the cable?
No, a rotating masonry drill bit adjacent to a cable will not create a magnetic field and no it could not disrupt the electrical current within the cable .
What is a shading coil?
A shading coil induces currents to create an additional electrical phase. The coil pauses slightly to control magnetic flux. Delaying magnetic flux allows for a secondary rotating magnetic field to build.
Why is alternating voltage induced in the rotating armature of a generator?
The windings of the armature are constantly cutting magnetic lines of force of opposite polarities
What is the difference between normal amplifier and magnetic amplifier?
normal amplifier is a mathametical operation analog the computer, magnetic amplifier is sound operation of the signal
What is self saturated magnetic amplifier?
an amplifier which is self saturated is called self saturated magnetic amp
Which device work by rotating a wire coil within a magnetic field to produce electric current?
generator
What type of microwave tube amplifier used an axial magnetic field and radial magnetic field?
That would be a TWT amplifier (traveling wave tube).
Is there any rotating magnetic field in dc motors?
yeah ,if we consider a 3 phase dc motor ,the rotating magnetic field is produced by rotating the permanent magnet with a constant speed.
Name the types of alternators based on their rotor construction?
1) Rotating armature alternator, rotates in stationary magnetic field. 2) Rotating field alternator, the magnetic field is rotating.
In a magnetic amplifier what happens if you replace the magnetic circuitry with capacitors?
Sh*t blows up.
What does a Rotating magnetic field do?
The Field which is continuously rotating with a particular axis is known as rotating magnetic field. It will be created in Three phase induction motor's stator. When the supply is given to stator of three induction motor, the flux of each phases (that are displaced by 120 degrees) will interact. Due to this the resultant Field will be rotating Magnetic Field will be Produced.
What causes the magnetic force in the Earth?
A rotating core of iron.
How does a compass work off of magnetism?
There is a magnetic field surrounding the Earth. The positive pole of this magnetic field (called the north magnetic pole) is near the North Pole. A compass has a freely rotating needle that is magnetized such that one end of the needle points toward the north magnetic pole.
What does an amplifier do for a subwoofer?
An amplifier will power your subwoofer so they can work.
Why is excitation necessary for synchronous generators?
generators work by rotating a magnetic field thru a wire shell or by rotating wire thru a stationary magnetic field (think of a small DC motor with magnets around the shell) since large generators dont have magnets in them (its not very efficent)you have to send a flowing current thru the rotating coils to produce the magnetic field. this induces current in the stator and you have a generator..of course the same effect is produced by inducing a current in the stator and pulling the output from the rotor.
