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+//Chapter-11 example 20
+//=============================================================================
+clc;
+clear;
+//input data
+Pp   = 1*10^6;//peak power in watts
+PW   = 1*10^-6;//pulse width in sec
+NPd   = 20;//pulses in one dwell period
+PRF  = 1000;//pulse repetitive frequency
+
+//calculations
+PE   = Pp*PW;//pulse energy in joule
+PED  = NPd*PE;//pulse energy in one dwell period
+D    = PW*PRF;//Duty cycle
+Pav  = Pp*D;//average power in watts
+
+//output
+mprintf('Average Power is %g watts\n Duty Cycle is %e\n Pulse Energy is %g Joules\n Pulse Energy in one Dwell Period is %g Joules\n',Pav,D,PE,PED);
+mprintf(' Note: In textbook Values of PRF and pulses in one dwell period are varied from given values in question while solving ' );
+;
+//================end of the program============================================
+