18. A motor is rated at 4.5 HP. If that motor is inducing 93% of its rated power, about how much power is it producing? a. 4.84 HP b. 2.17 HP 4.185 HP d. 3.923 HP

Q3: A universal fractional horsepower series motor has a resistance of 30 22 and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.

docs.google.com/form مطلوب MCQS A series motor runs at (800 r.p.m) when the voltage is (400 V) and the current is (25 A). The armature resistance is (0.4 Q) and the series field resistance is (0.2 Q). Determine the resistance to be connected in series to reduce the speed to (600 r.p.m) with same current 3.85 3 4.25 2.85 محو التحدید Brushes for commutator are made of

You are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M to ground. Your ohmmeter, however, indicates a resistance of 1.5 across terminals S1andS2. The ohmmeter indicates a resistance of 225 between terminals F1andF2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer.