A punching machine requires 5 kW during the non-punching time of 2 sec and 8 kW during the punching time of the last 1 sec for completing one punching cycle. The motor gives the energy at a uniform rate. The moment of inertia of the flywheel is 12 kg-m2 and the mean speed is 100 rad/s. The coefficient of fluctuation of the speed will be ________ %.
Enter numerical value using the virtual keypad. Round off where necessary.