30:25

Ultrasonic testing - 3

36:35

Magnetic particle testing - 1

13:00

ULTRASONIC NDT TEST IN हिन्दी

31:15

Acoustic Emission Testing - 1

30:24

Ultrasonic testing -1

49:47

Lecture 5: Welding power source - 1

38:28

Ultrasonic testing - 10

50:42

Mod-01 Lec-01 Introduction