288. A universal motor operates on
289. The speed of a universal motor can be controlled by
290. For a given output and speed, a universal motor as compared to 220 V, 50 Hz supply with require
291. Which of the following is the common reason for sparking in a universal motor?
292. An outstanding feature of a universal motor is its
293. Single phase universal motor can be used on
294. The most common mechanical method of providing speed reduction for universal motors is to use
