Global AC Electric Motor Market Size, Trends & Growth Opportunity, By Type (Induction AC Motors (Single Phase and Poly Phase) and Synchronous AC Motors (DC Excited Rotor, Permanent Magnet, Hysteresis Motor, and Reluctance Motor)), By End-user Industry (Oil & Gas, Chemical & Petrochemical, Power Generation, Water & Wastewater, Metal & Mining, Food & Beverage, and Discrete Industries), By Region and