The motor is connected from it's battery and used as a generator.On the axes(vertical is amps and horizontal is time) show the type of current it provides when it is rotated through 2 complete revolutions

This depends the motor, is it an alternating current motor, or a direct current motor. My guess is you have a coil withrotating in one direction (dc), in a fixed magnetic field. In that case, the current generated is a sine wave.