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+//CHAPTER 6 _ PRESSURE AND SOUND MEASUREMENT
+//Caption : Pressure Gage
+// Example 5 // Page 347
+p_max=10*10^6    //('Enter the maximum differential pressure')
+fn=20000  //(' Enter the frequency')
+E=200*10^9;   // modulus of elasticity
+v=0.3;   // poissons ratio
+p=7800    // density of steel
+disp("Let t/R be represented by TR ")
+TR=((3*p_max*(1-v^2))/(4*E))^(1/4)
+// we know R^2/t = r2t=10.21(Et^2/12(1-v^2)p)^0.5/R^2     using it , we have
+r2t=(10.21*sqrt(E/(12*(1-v^2)*p)))/fn
+R=TR*r2t;
+printf('value of R is %fd m\n', R)
+
+t=R*TR;
+printf(' value of t is %fd m \n',t)
+
+eo=8.85*10^-12
+er=1.0006;
+d=.001   //('Enter the distance between the plates of capacitor=:')
+S=-(eo*er*%pi*R^2)/d^2;
+// variation of capacitor distance with respect to pressure is given by
+q=(3*R^4*(1-v^2))/(16*E*t^3)
+// total sensitivity of the pressure transducer is given by
+sensitivity=S*q*10^18;
+printf(' So the total sensitivity of the pressure transducer is given by %1.2f pF/MPa\n',sensitivity)
+\ No newline at end of file