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+//electron velocity,transit angle and beam coupling coefficent
+//given
+Va=900// in volts
+Rb=30d+3//in ohm
+Ib=20d-3//in ampere
+f=3.2d+9//in hertz
+d=1d-3//meter
+Ve=0.593d+6*sqrt(Va)//m/s
+w=2*%pi*f
+Qt=w*d/Ve//radians
+Bc=(sin(Qt/2))/(Qt/2)
+Qt=round(Qt*100)/100///rounding off decimals
+Bc=round(Bc*1000)/1000///rounding off decimals
+disp(Bc,Qt,Ve,'THE electron eloccity ,transit angle and beam coupling coefficient in m/s,radians')//m/s,radians.