If digital DRT is calibrated for 300 mm longitudinal wave using 00 double crystal
probe then 60kg rail ---------peak will appear at
(i) 5.2
(ii) 5.7*
(iii) 7.8
(iv) 8.6
probe then 60kg rail ---------peak will appear at
(i) 5.2
(ii) 5.7*
(iii) 7.8
(iv) 8.6