Which symbol represents a 3-phase motor on a schematic?

Which symbol represents a 3-phase motor on a schematic?

• A. A circle with 'M' inside and three leads coming out
• B. A square with three coils
• C. A circle with '3PH' label
• D. A triangle symbol with 'M' inside

Answer: (A)

The symbol for a motor on schematics is a circle with an M inside, and the three leads coming out indicate a connection to the three separate power lines. This is the standard way to depict a motor, and when you see three leads, it signals a three-phase motor being fed by a three-phase supply. The other options don’t fit as the motor symbol: a square with three coils isn’t the conventional motor icon, a circle labeled 3PH points to the power supply rather than the motor itself, and a triangle with M isn’t the typical motor symbol used in electrical drawings.

The symbol for a motor on schematics is a circle with an M inside, and the three leads coming out indicate a connection to the three separate power lines. This is the standard way to depict a motor, and when you see three leads, it signals a three-phase motor being fed by a three-phase supply. The other options don’t fit as the motor symbol: a square with three coils isn’t the conventional motor icon, a circle labeled 3PH points to the power supply rather than the motor itself, and a triangle with M isn’t the typical motor symbol used in electrical drawings.