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//Chapter 4: Selection of Motor Power Rating
//Example 1
clc;
//Variable Initialization
t_min=40 // Minimum Temperature Rise in degree Celsius
t_ri=15 // Temperature Rise in degree Celsius
t_cl=10 // Clutched Time in sec
t_de=20 // Declutched Time in sec
k= 60 // Heating and Cooling time constant
//Solution
x=exp(-t_de/k)
y=exp(-t_cl/k)
th2= (t_min-t_ri*(1-x))/x //as t_min=t_ri(1-x)+th2*x
th_s=(th2-t_min*y)/(1-y) //as th2=th_s(1-y)+t_min*y
mprintf("Maximum temperature during the duty cycle :%.1f °C",th2)
mprintf("\n Temperature when the load is clutched continuously :%.1f °C",th_s)
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