1. Common tools for motor repair

Answer: Instruments: Multimeter, megohmmeter, single bridge, double bridge, clamp type ammeter. Measuring tools: vernier caliper, micrometer. Small motors generally require winding machines, multi-purpose wire molds, marking boards, presser feet, knives, scissors, hammers, wrenches, punches, etc. Others can be made according to your own needs. Large motors also require lifting tools, pulleys, coil forming tools, or dynamic balance testing machines.

2. What is a DC motor?

Answer: A rotating motor that converts direct current electrical energy into mechanical energy (DC motor) or converts mechanical energy into direct current electrical energy (DC generator). A rotating motor that defines its output or input as direct current electrical energy is called a direct current motor. It is a motor that can convert direct current electrical energy and mechanical energy into each other. When it operates as a DC motor, it converts electrical energy into mechanical energy; When operating as a generator, it is a DC generator that converts mechanical energy into electrical energy

3. What are the advantages and disadvantages of AC and DC motors?

Answer: DC motors are easier to control speed than AC motors, and can be used in situations where speed can be adjusted over a wide range. They can be used for power braking, but have more and more complex maintenance tasks than AC motors.