Ultrasonic testing is done in materials to determine cracks below the surface.
57) Ultrasonic testing is done in materials to determine
Answer is:
Cracks below the surface
Explanation:
Related ISRO Technician-B Fitter Question Paper - 2019 (Set - 1) with Answer Key
Answer is:
Type N
Explanation:
The type of drill used for general purpose drilling work is Type N.
The helix angles vary according to the material being drilled. According to indian standards, three types of drills are used for drilling various materials.
Type N - For normal low carbon steel.
Type H - For hard and tenaceous materials.
Types S - For soft and tough materials.
Answer is: