CWI Nondestructive Examination Methods 2

Question 1

When performing liquid penetrant testing, what is the purpose of the dwell time?

Accepted Answer

To allow the penetrant to seep into surface-breaking discontinuities

Answer

To allow the developer to absorb excess penetrant

Answer

To allow the cleaner to remove the penetrant

Answer

To allow the part to reach ambient temperature

Question 2

Which ultrasonic testing technique uses two separate transducers, one for sending and one for receiving?

Accepted Answer

Pitch-catch

Answer

Pulse-echo

Answer

Resonance

Answer

Immersion

Question 3

In radiographic testing, what does a higher kilovoltage (kV) setting primarily affect?

Accepted Answer

Penetrating power of the X-rays

Answer

Quantity of X-rays produced

Answer

Film exposure time only

Answer

The size of the focal spot

Question 4

What type of magnetic particle indication appears as a tight, sharp line and is typically associated with a crack?

Accepted Answer

Sharp linear indication

Answer

Nonrelevant indication

Answer

Broad fuzzy indication

Answer

Rounded indication

Question 5

An eddy current test is being performed on a non-ferromagnetic tube. Which property does NOT significantly affect the eddy current signal?

Accepted Answer

Magnetic permeability

Answer

Electrical conductivity

Answer

Wall thickness

Answer

Surface cracks

Question 6

In visual testing (VT), a weld convexity that exceeds the allowable limit is best described as:

Accepted Answer

Excessive reinforcement

Answer

Undercut

Answer

Overlap

Answer

Incomplete fusion

Question 7

Which RT artifact appears as a lighter area on the film and may be caused by back-scattered radiation?

Accepted Answer

Back scatter

Answer

Film fog

Answer

Scattered radiation streak

Answer

Double-wall image