Auxiliary winding construction differs from main winding

True.

Justification: In a single-phase induction motor (split-phase type), the auxiliary (starting) winding is constructed differently from the main winding, because a phase difference is required between their currents to create a rotating field at start.

• Main winding: thick wire, more turns, low resistance, high reactance; placed in the bottom of the slots. The current lags the voltage by a large angle.
• Auxiliary winding: thin wire, fewer turns, high resistance and low reactance (or in series with a capacitor); placed in the upper part of the slots, $90^\circ$ electrical away from the main winding.
• Because of the difference in $R/X$ ratio, the auxiliary current $I_a$ lags the supply voltage by a smaller angle than the main current $I_m$. The phase difference (30° to 40°, or nearly 90° with a capacitor) produces a rotating field and the starting torque.
• The auxiliary winding is thin and designed for short-time duty, so it is cut out by a centrifugal switch at about 75 % speed to avoid overheating.