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A synchronous machine is called a reversible machine because it can operate in both motor and generator modes. In motor mode, it converts electrical energy into mechanical energy to produce motion, while in generator mode, it converts mechanical energy into electrical energy. This ability to switch between modes makes it reversible.
What else can I help you with?
What is difference between reversible machine and self locking machine?
A reversible machine can operate in both directions, allowing for bidirectional movement, while a self-locking machine locks in place once power is removed, preventing unintentional movement. Reversible machines like electric motors can change the direction of rotation, whereas self-locking machines like a screw jack maintain their position without external forces.
What is difference between synchronous motor and synchronous condenser?
A synchronous motor is designed to convert electrical energy into mechanical energy to produce rotation, while a synchronous condenser is designed to only regulate voltage and improve power factor on the electrical grid without mechanical output. Both devices are synchronous machines that operate based on the principles of synchronous operation and require a magnetic field to be established.
Force applied to a simple machine is called what?
The force applied to a simple machine is called effort/input force.
What is work done on a machine called?
The work done on a machine is called input work or mechanical work. It refers to the energy transferred to the machine to operate it and perform tasks.
What is the difference synchronous buses and non synchronous buses?
Synchronous buses use a clock signal to synchronize data transfers between components, ensuring that data is transferred at a predictable rate. Non-synchronous buses transfer data without a clock signal and rely on other mechanisms to coordinate data transmission. Synchronous buses are generally faster and more efficient but can be more complex to design and implement compared to non-synchronous buses.
Why is the frequency of a synchronous generator locked into its rate of shaft rotation?
By definition a synchronous generator must be synchronous. If it is not "locked in" it is not a synchronous generator, but an induction machine.
What is emf equation for synchronous machine?
ediot
How do you prove conservation of energy If you read Feynman's Lectures ch 4 what is meant by the whole reversible machine experiment?
a reversible machine is a machine which is in itself a perpetual motion machine I am guessing.
Is screw jack reversible machine?
Screw jack is a non reversible machine,as it does not return to its original position even after the load is applied
What do you mean by synchronous watt?
It is that torque which at the synchronous speed of the machine under consideration would develop a power of 1 watt
How can you simulate the synchronous machine using pscad?
drag and drop and run
What is difference between reversible machine and self locking machine?
A reversible machine can operate in both directions, allowing for bidirectional movement, while a self-locking machine locks in place once power is removed, preventing unintentional movement. Reversible machines like electric motors can change the direction of rotation, whereas self-locking machines like a screw jack maintain their position without external forces.
Why synchronous impedance is not a constant?
Synchronous impedance is not a constant because it varies with operating conditions such as load, frequency, and machine construction. It is defined as the ratio of the voltage to the current at synchronous speed, but this relationship changes depending on the reactance and resistance of the machine as well as the power factor of the load. Additionally, factors such as saturation of magnetic materials and temperature can also influence synchronous impedance, leading to variations in its value.
Why the synchronous machine rotate at synchronous speed?
The spatial distribution of the windings in the armature is designed in a way such that it produce a rotating field when a three phase source is applied to its terminals. The field windings have a DC field applied to it and it is rotated mechanically by a prime mover. If the prime mover tried to rotate the synchronous machine at speed higher than its synchronous value then the power output of the generator will increase and this causes the speed to "lock" again to the synchronous one. If the prime mover applied less torque then the machine will slow down but the power output will decrease DUE TO DECEASE in the applied torque and this cause the machine to "lock" again to synchronous speed of the grid. The same principle can be applied to synchronous motors except that torque is negative (i.e. the prime mover is applying negative torque)
Applications of synchronous motor?
It is used in variety of applications such as... · Machine Tools such as a ball mill · Motor generator sets · Synchronous clocks · Timing devices · Synchronous condensers to condition electrical power · Record players · Robotics
Why the no of poles are less in induction machine compared to synchronous machine?
The number of poles determines the speed a machine has to turn (RPMs). The more poles, the slower the machine can turn. I don't believe your statement is true. I've seen synchronous generators, for example, that turn at 1200 RPMS, and induction motors that turn at ~1800RPMs.
Why the synchronous motor is always a salient pole machine ie why don't we use a cylindrical pole machine as a synchronous motor?
The speed of the machine is tied to the power supply frequency and the number of poles the machine has. It becomes impractical to make a round rotor machine with many poles, so machines that spin at low revolutions will typically be salient designs. A two or four pole machine could be round rotor designs.
