The correct answer is option 'C', which states that the split-phase induction motor has low starting current and moderate starting torque.

Split-phase induction motors are commonly used in various applications due to their simplicity, reliability, and cost-effectiveness. They are widely used in household appliances, such as refrigerators, washing machines, and air conditioners, as well as in small tools, fans, and pumps.

Let's understand why option 'C' is the correct answer by discussing the characteristics of a split-phase induction motor:

1. Starting Mechanism:
- The split-phase induction motor uses a special starting mechanism called the auxiliary winding or starting winding.
- This winding is placed in parallel with the main winding and has a higher resistance and fewer turns compared to the main winding.
- During the starting process, a start capacitor is also connected in series with the auxiliary winding to provide an additional phase shift between the main and auxiliary windings.

2. Starting Torque:
- The starting torque of a split-phase induction motor is determined by the interaction between the main and auxiliary windings.
- The auxiliary winding produces a magnetic field that is out of phase with the main winding's magnetic field.
- The phase difference between these two fields creates a rotating magnetic field, which generates starting torque.
- However, the starting torque produced by the split-phase induction motor is relatively low compared to other types of motors, such as the capacitor-start induction motor.

3. Starting Current:
- The auxiliary winding and start capacitor are designed to create a phase difference between the main and auxiliary windings, which helps in starting the motor.
- This phase difference reduces the starting current drawn by the motor.
- As a result, the split-phase induction motor has a lower starting current compared to other types of motors, such as the capacitor-start induction motor.

4. Torque-Speed Characteristics:
- The torque-speed characteristics of a split-phase induction motor are different from those of a standard induction motor.
- The motor operates at a lower power factor and efficiency compared to a standard induction motor.
- The starting torque is lower, but the motor can provide moderate torque during normal operation.

In summary, the split-phase induction motor has low starting current and moderate starting torque. This makes it suitable for applications where a high starting torque is not required, such as household appliances and small tools.