Which is a potential consequence of reduced flow to the capstan motor?

• A. Can burn out the capstan motor
• B. Reduced pulling power
• C. No effect
• D. Improved efficiency

Answer: (A)

Flow to the capstan motor is about cooling. When cooling (air or lubricant flow) is reduced, the motor can’t shed heat effectively while it’s under load. This heat buildup pushes the motor to higher temperatures, which stresses the insulation, bearings, and windings. Over time or under heavy use, that thermal stress can cause insulation failure and other damage, eventually leading to burnout of the capstan motor.

The idea that there would be no effect or that efficiency would improve doesn’t fit with how motors handle heat. A motor underbalanced cooling won’t suddenly pull more or less power for no reason; it’s the overheating and resulting damage that’s the real risk.