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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 Question

MATH1A

Please Solve ninth Question - I dont know whether the answer is right or wrong

Solution

Step 1

9. If p= initial investment , r = rate of interest t= number of years

 Then Total amount after t years is given by  $A=p+\frac{prt}{100}$

   

Step 2

Here p = $12000 , r = 2.2% and t = 10 years

       Then the amount will be 

                                             $$\begin{gathered} A=12000 +\frac{12000\times 2.2\times 10}{100} \\ \therefore A=12000 +2640 \\ \therefore A=14640.00 \end{gathered}$$        

           The value in 10 years = $ 14640.00