<prompt> AV nodal delay is:0.2 sec0.13 sec0.01 sec0.3 sec  <response>: Velocity of impulses at different parts of conductive system:Atrial muscle fibers : 0.3 metersecondInternodal fibers : 1.0 metersecondAV node : 0.05 metersecondBundle of His : 0.12 metersecondPurkinje fibers : 4.0 metersecondVentricular muscle fibers : 0.5 metersecondThus, the velocity of impulses is maximum in Purkinje fibers and minimum at AV node. 