Dripproof Motor is an open motor in which the ventilating openings are so constructed that successful operation is not interfered with when drops of liquid or solid.

Dripproof Motor is an open motor in which the ventilating openings are so constructed that successful operation is not interfered with when drops of liquid or solid.

• A. Dripproof Motor
• B. Dripproof Guarded Motor
• C. Dust-Ignition-Proof Motor
• D. Explosion-Proof Motor

Answer: (A)

The main idea is that a dripproof motor is an open motor with ventilation openings designed so that the cooling air can flow and operation isn’t affected by droplets of liquid or by solid particles entering the openings. The openings are shaped and positioned to prevent ingress that could interfere with winding cooling or cause damage, while still allowing air to circulate. This distinguishes it from motors intended for hazardous atmospheres (dust-ignition-proof or explosion-proof) and from guarded variants where the emphasis is on protecting moving parts rather than preventing liquid or solid ingress. In short, the description matches a dripproof motor because it stays functional despite moisture or small particles entering around the ventilation openings.

The main idea is that a dripproof motor is an open motor with ventilation openings designed so that the cooling air can flow and operation isn’t affected by droplets of liquid or by solid particles entering the openings. The openings are shaped and positioned to prevent ingress that could interfere with winding cooling or cause damage, while still allowing air to circulate. This distinguishes it from motors intended for hazardous atmospheres (dust-ignition-proof or explosion-proof) and from guarded variants where the emphasis is on protecting moving parts rather than preventing liquid or solid ingress. In short, the description matches a dripproof motor because it stays functional despite moisture or small particles entering around the ventilation openings.