🔍 Key Concepts

• Synchronous motor speed is locked to line frequency and is often used where very accurate timing is needed, such as clocks and small timers. • Very small timer motors are usually low-power, compact, and often have a small output gear to drive clock or timer mechanisms. • Compare the physical size and construction of each pictured motor to typical timer/clock motors, which are usually enclosed, pancake-shaped units.

💭 Think About

• Looking at each picture, which motor appears specifically designed to drive light mechanical loads like gears or dials, rather than fans or pumps? • Which motor shows features of a small timing drive, such as a tiny pinion gear and a thin, compact housing that could fit behind a control panel? • Which of the motors looks most like the type you might find inside a domestic appliance timer (washing machine, oven, or clock) rather than a main machinery drive motor?

✅ Before You Answer

• Verify which picture shows the smallest overall motor size with an attached small gear suitable for turning a timing mechanism. • Check which motor has a fully enclosed, flat "pancake" style body, a common design for synchronous timing motors. • Eliminate any motors that are large, open-frame, or clearly designed for higher power loads, as these are unlikely to be used just for timers.