Question: A 250-V, 4-pole, wave-wound d.c. series motor has 782 conductors on itsarmature. It has armature and series field resistance of 0.75 ohm. The motor takesa current of 40 A. Estimate its speed and gross torque developed if it has a flux per pole of 25 mWb Answer: Step 1 Mechanical Engineering homework question answer, step 1, image 1 Mechanical Engineering homework question answer, step 1, image 2 Step 2 Mechanical Engineering homework question answer, step 2, image 1 Step 3 Mechanical Engineering homework question answer, step 3, image 1

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Answer:

Here is the solution for given problem  :)

WORKING CODE:(In C++):

complex.h:

#ifndef COMPLEX_H
#define COMPLEX H
struct complexNumber {

float re = 0; // real part of complex number re=

float im = 0; // imaginary part of complex number
};
class complex {
public :

	complex ();
	complexNumber add(complexNumber, complexNumber);
	complexNumber multiply(complexNumber,complexNumber);
	complexNumber absolute(complexNumber);
	complexNumber getLastAnswer();
	void print(complexNumber);

private:
	complexNumber storeLastAnswer(complexNumber);
	complexNumber lastAnswer;
};
#endif

complex.cpp:

#include <iostream>
#include "complex.h"
#include<cmath>
using namespace std;
complex::complex() {//default constructor of complex class

}
complexNumber complex::add(complexNumber c1,complexNumber c2)
{
	//calculating the addition operation of complex numbers
	lastAnswer.re = c1.re+c2.re;
	lastAnswer.im = c1.im+c2.im;
return lastAnswer;
}
complexNumber complex::multiply(complexNumber c1,complexNumber c2)
{
	//calculating the multiplication operation of complex numbers
	lastAnswer.re = (c1.re*c2.re)-(c1.im*c2.im);
	lastAnswer.im = (c1.re*c2.im)+(c1.im*c2.re);
return lastAnswer;
}
complexNumber complex::absolute(complexNumber c1)
{
	//calculating the absolute of complex number
	lastAnswer.re = sqrt((c1.re*c1.re)+(c1.im*c1.im));
	lastAnswer.im = 0.0;
	return lastAnswer;
}
complexNumber complex::getLastAnswer()
{
	//returning the previous answer..
	return lastAnswer;
}
void complex::print(complexNumber c1)
{
	//printing the complex number..
	cout<<c1.re<<"+"<<"("<<c1.im<<"i"<<")"<<endl;
}

main.cpp:

#include "complex.cpp"
int main()
{
    struct complexNumber numl, num2, result;
    numl.re = 10;
    numl.im = -5;
    num2.re = 2;
    num2.im = 1.5;
    complex calc;
    result = calc.add(numl, num2);
    calc.print (result);
    calc.print(calc.getLastAnswer());
    result = calc.absolute(result);
    calc.print(result);
    calc.print(calc.getLastAnswer());
    result = calc.multiply (num2, calc.getLastAnswer());
    calc.print (result);
    calc.print(calc.getLastAnswer());
return 0;
}

OUTPUT: