Construction Of Three Phase Synchronous Motor
Similar to d.c. machine where there is no constructional difference between a generator and motor, There is no difference between the construction of…
Principle Of Working Of 3-Phase Synchronous Motor
Synchronous motor works on the principle of the magnetic locking. When two unlike poles are brought near each other, if the magnets…
Condition Of Maximum Torque In Three Phase Induction Motor
From the torque equation, it is clear that torque depends on slip at which motor is running. The supply voltage to the…
Condition For Maximum Power Developed In Synchronous Motor
The value of ? for which the mechanical power developed is maximum can be obtained as, Note : Thus when Ra is negligible, ? = 90o for…
Significance Of Back E.M.F. In Dc Motor
It is seen in the generation action, that when a conductor cuts the lines of flux, e.m.f. gets induced in the conductor.…
Types Of D.C. Motors
Similar to the d.c. generators, the d.c. motors are classified depending upon the way of connecting the field winding with the armature…
Slip Of Induction Motor
When have seen that rotor rotates in the same direction as that of R.M.F. but in steady state attains a speed less…
Speed Torque Characteristics In Three Phase Induction Motor
Uptill now, we have seen torque – slip characteristics of an induction motor. To compare the performance of induction motor with d.c.…
Slip Ring Rotor Or Wound Rotor In Three Phase Induction Motor
In this type of construction, rotor winding is exactly similar to the stator. The rotor carries a three phase star or delta…
Squirrel Cage Rotor Three Phase Induction Motor
The rotor core is cylindrical and slotted on its periphery. The rotor consists of uninsulated copper or aluminium bars called rotor conductors.…