what are generators in terms of physics?
115670
A generator is a machine that converts mechanical power to electrical power, by making a conductor cut across a magnetic field's lines of force.  This is done by moving either the conductor or the magnetic field.  Current flows in the conductor if its ends are connected to an electrical load thus producing electrical power.  Because an opposing magnetic field is created by the current in the conductor, it requires mechanical energy to maintain this motion.
486197
frequency generator is like tank circuit(lc circuit). it's main function is to regulate the energy stored in the inductance and capacitance. to know more you can read RESNICK HALLIDAY WALKER
89951
Just as with any other generator, electrical power is proportional to shaft torque and speed.  A wind turbine generator is designed to operate in a certain speed and torque range.  The design of the turbine and pitching of the blade angle keep it operating in this range.  It's actually wind speed that forces the control of torque/speed up to a certain maximum level, so yes, electrical output is directly coupled to wind speed and energy capture of the wind.  \n\nThe generators in wind turbines do generaly require some amount of excitation current to regulate power output.  This is really what allows wind turbines to operate at different power outputs and not a single fixed rating.
699391
For large or largish generators\nsteam turbines\ngas turbines\nwind turbines\nwater turbines\ndiesel engines
1137859
Large commercial generators do not have permanent magnets. The rotating field is magnetized via slip rings that feed current into it's windings. The current is generated by the exciter which is either a small generator attached to the end of the shaft or, in modern applications, an electronic SCR converter.
191762
There is nothing called a induction generator, but of course there is a AC machine called induction motor. \n\nThe basic difference between an induction motor and a synchronous motor is that while the rotor of the Synchronous motor is powered (by DC current) the rotor of induction motor is powered by induction from the stator. Both have there stator powered by AC.\n\nAs for the Synchronous generator, if you force a Synchronous motor to rotate, powering only its rotor and not powering its stator, an AC will be generated across its stator and hence it will work as a generator.
1005187
At its simplest, a generator involves a spinning object inside a coil, and produces electricity.  It's tempting to think that if there were no friction, that the spinning object would turn forever always generating electricity, but that's not the case.\n\nWhen energy is extracted from the generator, it is because the generator is producing a current in its coil.  This current in the coil creates a magnetic field that actually slows down the spinning object.  Friction isn't the only force slowing down the system, it's not even an important force.  The important force is this electromagnetic braking force which arises as a direct and unavoidable consequence of the extraction of energy from the generator.
675101
I think you mean steam generator, considering stream generators are for computers and the like.\n\nCheck out this thread (http://www.enginads.com/extras/sprkarch.cgi/noframes/read/631) it might answer your question.
370874
Electricity is a form of energy . Energy can't be created nor destroyed . If you are talking of using a small electrical signal to make a large electrical load to work ...Ex : a 50 HP motor at 480 volts starting and running with a 24 volt 1 amp signal application ...that would be done through electro magnetic contactors in which a small 24 volt 1 amp source is applied to a coil and closes the contactor to permit the much larger source ( 480 volt + / - 70 amps ) to cross and energize the load ( 50 HP ) motor ....If you talk of generating electricity there are several ways but can't be considered " amplifying " in the true sense of the word...Hope I clarified this point for you ...
1171298
Alternators generate electricity by the same principle as DC generators, namely, when the magnetic field around a conductor changes, a current is induced in the conductor. In a typical modern alternator, a rotating magnet called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator. The field cuts across the conductors, generating an electrical current, as the mechanical input causes the rotor to turn.\n\nThe rotor magnetic field may be produced by induction (in a "brushless" generator), by permanent magnets (usually in very small machines), or by a rotor winding energized with direct current through slip rings and brushes. Automotive alternators invariably use brushes and slip rings, which allows control of the alternator generated voltage by varying the current in the rotor field winding. Permanent magnet machines avoid the loss due to magnetizing current in the rotor, but are restricted in size, owing to the cost of the magnet material. Since the permanent magnet field is constant, the terminal voltage varies directly with the speed of the generator. Brushless AC generators are usually larger machines than those used in automotive applications.
300542
"An assembly consisting of a magnet mounted on a frame, and a wire coil (armature) that can be rotated within the magnetic field. The function of the generator is to convert mechanical energy into electrical energy."\n\nBasically in a generator you can induce current by rotating a magnet inside a wire coil.  The opposite of this is a motor in which the electricity causes mechanical movement.
526693
Yes. The FIELD windings (not the armature windings) of a generator quite often can over heat and "short" together, thus reducing the capable out put under load, no mater how fast the armature is rotated.
796308
It depends on the type of motor. A dc motor may be used as a generator provided it is either a permanent magnet type or has sufficient residual magnetism in the iron to start off the generation.
313673
Recuperator is a heat exchanger which helps to boost the efficiency of gas turbine engines on those air is compressed, burned with fuel, and used to drive a turbine. \n\nAnd you know what is generator now just differentiate it
1084125
My God, I've never seen so much misinformation and confusion in my life.\n\nThe word "generator" is a generic name for a rotating machine which converts mechanical energy into electrical energy.\n\nThere are two types.\n\nOne type of generator is a dynamo, which produces d.c.\n\nThe other type of generator is an alternator, which produces a.c.
169135
Simply put, the generator voltage (volts), frequency (Hz) and power (watts) and phase (single/three) are called ratings. These are selected to suit the load that will be connected. and the environment in which it will be used
616186
The potential energy, stored by the water due to its height, converts to kinetic energy as it falls. This turns the turbines which in turn create electrical energy.\n\nThis conversion requires the use of a generator (the rotation of the coils of wire that cuts through the magnetic fields of some magnets results in electricity forming; refer to Fleming.)