Because everything always has to be grounded, for safety. If a 'ground' is not available, as in an aircraft, all the external containers for the different items of equipment are all connected together to the local 'earth'.
Yes, that is one of the major advantages of a three-phase induction motor.
The 3-phase currents in the 3 coils of an induction motor will produce a steady rotating magnetic field.
stator,roto
yes the motor will run but will draw more current and the torque will be not constant means not smooth due to unbalanced current
A synchronous motor can be a type of 3-Phase AC motor, or not.A synchronous motor is defined by the period of the rotor being synchronized with the frequency of the stator windings' current. The stator windings might be 3-Phase or not (2-Phase would work).Also synchronous motors are not the only type of 3-Phase AC motors. An induction motor could also be 3-Phase AC and has a few advantages and disadvantages over a synchronous motor.
That indicates a fault in the induction motor.
Yes, that is one of the major advantages of a three-phase induction motor.
One of the disadvantages of the 3 phase induction motor is that it requires a three wire supply. The other disadvantage is that the 3 phase induction motors have poor starting torque and high have in the rush currents.
no one
The 3-phase currents in the 3 coils of an induction motor will produce a steady rotating magnetic field.
by motor starter
When you do a load test on a 3-phase induction motor you are checking the power factor, viz slip, and efficiency of the motor. You can test various loads with this test.
The single phase induction motors are made self starting by providing an additional flux by some additional means. Now depending upon these additional means the single phase induction motors are classified as: 1.Split phase induction motor. 2.Capacitor start inductor motor. 3.Capacitor start capacitor run induction motor. 4. Shaded pole induction motor.
induction motor (3 phase)
Sir, what is the cable size for 1.5kw 3phase induction motor 400v?
stator,roto
yes the motor will run but will draw more current and the torque will be not constant means not smooth due to unbalanced current