The correct answer is: A single-phase induction motor is inherently non-self-starting with low torque.
A single-phase induction motor is a type of electric motor that uses a single alternating current (AC) supply to create a rotating magnetic field. The rotating magnetic field induces a current in the rotor, which causes it to rotate.
Single-phase induction motors are not inherently self-starting. This means that they cannot start rotating on their own without some external assistance. The most common way to start a single-phase induction motor is to use a split-phase starter. A split-phase starter uses two windings in the stator to create a rotating magnetic field. The two windings are connected to different phases of the AC supply, which creates a phase difference between them. This phase difference causes the magnetic field to rotate, which starts the motor.
Once the motor is running, the centrifugal switch opens and disconnects the starting winding. The motor then runs on the main winding.
Single-phase induction motors have a low starting torque. This means that they cannot start heavy loads. They are typically used in applications where the load is not too heavy, such as fans, blowers, and compressors.
Here is a brief explanation of each option:
- Option A: A single-phase induction motor is inherently self-starting with high torque. This is not true. Single-phase induction motors are not inherently self-starting. They require an external starting aid, such as a split-phase starter.
- Option B: A single-phase induction motor is inherently self-starting with low torque. This is also not true. Single-phase induction motors have a low starting torque. They cannot start heavy loads.
- Option C: A single-phase induction motor is inherently non-self-starting with low torque. This is true. Single-phase induction motors are not inherently self-starting. They require an external starting aid, such as a split-phase starter.
- Option D: A single-phase induction motor is inherently non-self-starting with high torque. This is not true. Single-phase induction motors have a low starting torque. They cannot start heavy loads.