SOLUTION. ANSWERS SHOULD BE IN TWO DE CIMAL PLACES.  The armature of a two-pole dc machine has 30 slots, each slot has 4 conductors each. during its operation, only 75% of the conductors are directly under the pole. each pole measures 2 inches by 3 inches and produces ten million maxwells of flux. the armature core is 12 inches in length and 3.5 inches in diameter. the total resistance of the winding is 2 ohms. a) determine the frequency of the machine when running at 3600 rpm.

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Q: VTH = -|V KQ3=2MA R=10k Q3 11 Vin= 2 V + 4V VTH=-1V ег ка2=? 2₁ VTH=2V k=2mA V² R₁ = 1000

A:

Q: Problem 7: A 25 resistor, 20 mH inductor, and a 0.08 F capacitor are wired in series. What is their…

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A:

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DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.