Electrical Engineering · DC Machines
Which of the following statements is NOT correct with respect to the field control method of DC shunt motors?
- 1The field control method is inherently suitable for applications where rapid speed reversal of the motor is required without changing connections.✓
- 2Field control is suitable for constant kW (constant power) drives where the load torque falls with increasing speed.
- 3The flux cannot be increased indefinitely due to the magnetic saturation effect.
- 4Only speeds above the rated speed are possible with field control.
Correct answer
The field control method is inherently suitable for applications where rapid speed reversal of the motor is required without changing connections.
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