NDT Nondestructive Testing Methods & Techniques

Question 1

What is the primary goal of Nondestructive Testing (NDT)?

Accepted Answer

To check for hidden defects without damaging the material

Answer

To destroy the material to test its strength.

Answer

To measure the material's weight.

Answer

To perform visual inspection only.

Question 2

Which method is commonly used in ultrasonic NDT?

Accepted Answer

Ultrasonic waves

Answer

Magnetic resonance imaging.

Answer

Infrared thermography.

Answer

Radiography.

Question 3

What does the dye penetrant testing method detect?

Accepted Answer

Surface cracks and defects

Answer

Subsurface corrosion.

Answer

Porosity.

Answer

Internal cracks.

Question 4

Which is a limitation of radiographic NDT?

Accepted Answer

It requires access to both sides of the material

Answer

It cannot detect surface defects.

Answer

It is only useful for metal testing.

Answer

It is slower than other methods.

Question 5

What does visual inspection NDT focus on?

Accepted Answer

To detect visible defects such as cracks and corrosion

Answer

To measure the material thickness.

Answer

To test the material's weight.

Answer

To detect hidden internal defects.

Question 6

Which of the following is a disadvantage of using magnetic particle testing (MT)?

Accepted Answer

It can only be used on ferromagnetic materials

Answer

It is only effective for non-metallic materials.

Answer

It is not portable.

Answer

It requires highly trained personnel.

Question 7

How is eddy current testing used in NDT?

Accepted Answer

It is used to detect surface and near-surface defects in conductive materials

Answer

It detects electrical faults in wiring.

Answer

It detects gas leaks.

Answer

It measures material weight.

Question 8

What is the advantage of using infrared thermography in NDT?

Accepted Answer

It allows for real-time, non-contact testing

Answer

It requires physical contact with the material.

Answer

It is slower than other methods.

Answer

It only detects cracks.

Question 9

What is the role of calibration in NDT?

Accepted Answer

To ensure accurate and reliable test results

Answer

To make testing faster.

Answer

To increase the cost of the test.

Answer

To make the equipment portable.