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A 3 phase synchronous motor is working at normal excitation, then the flux deficient in a circuit is ________
given by armature winding mmf
given by field winding mmf
supplied to armature winding mmf
supplied to field winding mmf
given by armature winding mmf
A 3 phase synchronous motor operating at normal excitation primarily relies on the magnetic field strength produced by the armature winding's magnetomotive force (mmf) to establish its functionality. This makes option A the correct answer as it relates to the flux deficiency present in the circuit.
A 3 phase synchronous motor operating at normal excitation primarily relies on the magnetic field strength produced by the armature winding's magnetomotive force (mmf) to establish its functionality. This makes option A the correct answer as it relates to the flux deficiency present in the circuit.
╬ж=fVтАЛ тАФ Magnetic flux formula
F=NтЛЕI тАФ mmf formula
In a synchronous motor, the armature winding generates a rotating magnetic field when energized. Under normal excitation conditions, if there is a deficiency in magnetic flux, it is attributable to the armatureтАЩs mmf, which opposes the field produced by the rotor's winding. The armature's mmf thus governs the existing magnetic conditions in the machine.
The armature winding produces the main magnetic field in the motor.
Flux deficiency can lead to inefficient motor operation.
High efficiency
Good speed regulation
Complex construction
Higher cost
Electric power generation
Large industrial drives
Standard values may vary depending on design specifications.
Option B is incorrect because it suggests that the field winding mmf primarily determines the flux deficiency, which is not the case in normal operation.
A is correct тАФ The flux deficient in the circuit of a synchronous motor is primarily determined by the armature winding mmf.
Understand the relationship between the armature winding and field winding and how it influences the motor's performance.