// Exa 1.34 clc; clear; // Given I1 = 10; // Current which produces deflection of 90 degrees Theta1 = 90; // In degrees I2 = 5; // Current for which theta is to be calculated // Solution //The deflection which produces a current of 1A when instrument is spring controlled // Tc ∝ theta // theta ∝ I^2 theta2 = (I2/I1)^2 * Theta1 ; printf('The deflection which produces a current of 1A when instrument is spring controlled is equal to = %.1f degrees \n',theta2); //The deflection which produces a current of 1A when instrument is gravity controlled // Tc ∝ sin(theta) // theta ∝ I^2 theta2_gravity = asind((I2/I1)^2 *sind(Theta1)) ; printf(' The deflection which produces a current of 1A when instrument is gravity controlled = %.2f degrees \n',theta2_gravity); // The value of I given as 1A in problem statement is incorrect to satisfy the problem answer(correct value is 5A)