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The main difference between the Separately excited motor and the shunt motor is the field cct where as in the second it has its own voltage supply.
Answer
I think you mean 'generator', not 'motor'. A 'self-excited' motor is one in which the output supplies the field current, as well as the load current. A 'separately-excited' motor is one in which the field current is provided from an external source.
What else can I help you with?
Is torque and current proportional?
Sometimes, for example in a separately excited dc motor. But in a series-wound dc motor the torque is proportional to current-squared, which gives the motor a very high starting torque and this makes series motors very popular for traction.
What is the difference between a seperately excited DC generator and DC shunt generator?
The difference between a separately excited DC generator and a Shunt DC generator is that for a separately excited Dc generator , the excitation field winding is supplied by an external source different from that supplying the armature while for shunt generator, the excitation field windind is connected in series with the armature and supplied by a single source.
What happen when you reverse the direction of rotation in a separately excited dc generator?
When reverse the direction of a seperately excited DC generator,only polarities has been reversed,i.e., (+) becomes (-) and (-) become (+).
How is the induced voltage of separately excited dc generator affected if the speed increases?
as speed increases, induced voltage increases
Would the motor turn if only the armature were excited?
A motor will turn when only the armature is excited, if there is enough residual magnetism in the field.
Is a DC motor single excited or double excited?
It is doubly excited if it is sparately excited dc motor, singly excited if it is self excited machine
What happens if load torque is same at full speed in separately excited dc motor?
Same as what? at maximum speed and torque, the motor delivers maximum power.
Different types of DC generator?
There are two types me dc generator 1 separately excited dc generator 2 self excited dc generator
What is separately excited motor?
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What happens if load torque is same at all speed in separately excited dc motor?
It means that the armature must be supplied with a constant-current source.
Is torque and current proportional?
Sometimes, for example in a separately excited dc motor. But in a series-wound dc motor the torque is proportional to current-squared, which gives the motor a very high starting torque and this makes series motors very popular for traction.
What is separately-excited generator?
in a separately excited generator the field coils are excited from a separate source like a dc battery may be or any other small generator. They are self starting generators.
What is the difference between a seperately excited DC generator and DC shunt generator?
The difference between a separately excited DC generator and a Shunt DC generator is that for a separately excited Dc generator , the excitation field winding is supplied by an external source different from that supplying the armature while for shunt generator, the excitation field windind is connected in series with the armature and supplied by a single source.
Why synchronous motor called double excited motor?
AC and DC supply sources we are given to motor so we are called double excited motor
What happen when you reverse the direction of rotation in a separately excited dc generator?
When reverse the direction of a seperately excited DC generator,only polarities has been reversed,i.e., (+) becomes (-) and (-) become (+).
Can you use the separately excited shunt generator machine as self excited generator?
You have a seperately excited generator and then you have a shunt generator which has the field winding in parallel with the armature terminals. In DC machines a separately excited generator could be run as a shunt generator provided the field winding is designed to work on the generated voltage. A separately excited alternator needs a DC supply for the field winding. In car alternators that is taken from the main winding via a rectifier and a voltage regulator.
Application of separately excited dc generators?
As a separate supply is required to excite field, the use is restricted to some special applications like electro-plating, electro-refining of materials etc. But what is the difference between self excited and separately excited?
