When a particular mode is excited in a wave guide there appears an extra electronic component in direction of propagation the resulting mode is?

When a particular mode is excited in a waveguide, the resulting mode can exhibit an additional electric field component along the direction of propagation, leading to the formation of a hybrid mode. This combination of electric and magnetic field components allows for the propagation of signals while maintaining specific modal characteristics. The presence of this extra component can affect the waveguide's performance, including its dispersion and cut-off frequencies.