Free NDT Penetrant Testing Questions and Answers

Question 1

How often should one measure the strength of UV light?

Accepted Answer

All of the above

Answer

At startup of inspection cycle

Answer

When a new bulb is installed

Answer

Every 8 hours

Question 2

When the manufacturer initially sends the penetrant:

Accepted Answer

A sample of fresh solution should be collected and stored as a standard for future comparison

Answer

It should be compared to the previous batch of penetrant

Answer

It should be compared to the previous penetrants sensitivity

Answer

It should be mixed with the used penetrant in order to increase its sensitivity

Question 3

Increasing the temperature will:

Accepted Answer

Raise the speed of evaporation of penetrants

Answer

Reduce the emulsifier time

Answer

Require the need of a post emulsified penetrant

Answer

Increase the developer time

Question 4

Most materials can be tested with LPI as long as the part's surface is

Accepted Answer

Is not extremely rough or porous

Answer

Heated to a temperature above 100° F

Answer

Cleaned with number 005 grit

Answer

Smooth and uniform

Question 5

Which kind of penetrant is less susceptible to cleaning fluid contamination?

Accepted Answer

Type II

Answer

Type I

Answer

Type IV

Answer

Type III

Question 6

When using a water suspendible developer, which developer form is used?

Accepted Answer

Form c

Answer

Form b

Answer

Form a

Answer

Form d

Question 7

Pollution of the penetration tool:

Accepted Answer

Will change the surface tension and contact angle

Answer

Will occur because of the crossover between the penetrant and developer

Answer

Will only take place if the part has not been cleaned

Answer

Will occur if the tank is not covered during the dwell time

Question 8

For water soluble developer, which kind of developer is used?

Accepted Answer

Form b

Answer

Form a

Answer

Form d

Answer

Form c

Question 9

While utilizing a fluorescent penetrant, the part's surface should have a white light intensity of:

Accepted Answer

A maximum of 2 foot-candles

Answer

A maximum of 100 foot-candles

Answer

A minimum of 100 foot-candles

Answer

A minimum of 50 foot-candles

Question 10

The water-washable penetrant's water content:

Accepted Answer

Must be checked regularly

Answer

Should be performed weekly

Answer

Should be performed daily

Answer

Should be performed monthly