Questions for Radiographic Testing – Specific

Questions for Radiographic Testing – Specific

1) Use of a slower speed film improves the definition of the radiograph because the slower film:

(a)      Requires more exposure

(b)      Is more sensitive to X rays

(c)       Requires less voltage

(d)      Has finer grains

2) The penetrameter is a tool used to check the ________________ of a radiograph:

(a)       Contrast

(b)       Definition

(c)       Sensitivity

(d)       Emulsion

3) Which of the following types of radiation is commonly used in radiographic testing? (Choose one):

(a)       Alpha particles

(b)       Neutrons

(c)       gamma rays

(d)       Beta rays

4) Lead intensifying screens are used to:

(a)       Decrease exposure time

(b)       Increase grain size

(c)       Shield film from stray light

(d)       All of the above

5) The primary effect of an increase in the mill amperage at which a X ray tube is being operated would be to:

(a)       Increase the radiation intensity

(b)       Increase penetrating power

(c)       Increase primary beam wavelengths

(d)       All of the above

6) What is the most desirable temperature for manual developer solutions?

(a)       10-15.5°C (60°F)

(b)       18-24°C (68°F)

(c)       10-22.2°C (72°F)

(d)       20-26.6°C (80°F)

7) Mottled film may result from:

(a)       Inadequate agitation of the film during development

(b)       Inadequate water rinse during processing

(c)       Using exhausted stop bath solution

(d)       Any of the above

8) The primary effect of an increase in the kilo voltage at which a X ray tube is being operated would be to:

(a)       Increase the radiation intensity

(b)       Increase penetrating power

(c)       Increase penetrating power and radiation intensity

(d)       Increase primary beam wavelength

9) According to the doc ASME Sec V which of the following is the true:

(a)       This procedure describes requirements and methods for the radiographic examination of welds in flat and curve products.

(b)       NDT RT L‐II personnel set up the equipment, perform tests and reports the results

(c)       Either a densitometer or step wedge comparison film shall be used for   judging film             density

(d)       All of the above

10) According to the doc ASME Sec V which of the following is the false:

(a)       All examiners carrying out examinations at these machines have been qualified and certified according to the GPC Written Practice (the Written Practice is based on ANSI/ASNT CP-189).

(b)       Qualification records and certificates are filed at GPC QHSE Office

(c)       NDT RT L‐II personnel set up the equipment, perform tests and reports the results

(d)       Either a densitometer or step wedge comparison film shall be used for judging film sensitivity.

11)      A thin, white line within the film image of a weld crown might be:

(a)       A hair between the lead screen and the film

(b)       Incomplete penetration

(c)       A crack

(d)       Undercut

12) Which of the following welding discontinuities would be most difficult to image radiographically:

(a)       Planar lack of fusion

(b)       Incomplete penetration

(c)       Undercut

(d)       Slag inclusions

13) Slow films:

(a)       Give better definition than fast films

(b)       Are faster than fast films

(c)       Require shorter exposure times than fast films

(d)       Usually have less contrast than fast films

14) Contrast is defined as the comparison between _______________ on different areas of the radiograph:

(a)       Density

(b)       Sensitivity

(c)       Sharpness

(d)       Latitude

15) According to the doc ASME Sec V operator shall be:

(a)       qualified according to GPC Written Practice

(b)       qualified and certified according to GPC Written Practice

(c)       NDT L-II

(d)       None of the above

16) According to the doc ASME Sec V Radiation Energy:

(a)       Densitometers shall be calibrated at least every 90 days during

(b)       As required in the order documents

(c)       shall be performed with a technique of sufficient sensitivity to display the designated hole IQI image and the 2T hole

(d)       shall achieve the density and IQI image requirements

17) According to the doc ASME Sec V which statement are true:

(a)       The IQI shall be placed on the source and film side of the part being examined

(b)       at least one IQI image shall appear each radiograph

(c)       All radiographs shall be free from mechanical, chemical, other blemishes to the extent that they do not mask and are not confused

(d)       only (b) and (c)

18) The fact that gases, when bombarded by radiation, ionise and become electrical conductors makes them useful in:

(a)       X ray transformers

(b)       X ray tubes

(c)       Masks

(d)       Radiation detection equipment

19) What is the best advantage achieved in exposure time, using front and back lead screens, as compared to exposure time without screens?

(a)       About the same, but less scatter

(b)       About twice as great, but less scatter

(c)       1/2 to 1/3

(d)       Not related.

20) An advantage of a double versus a single emulsion film is:

(a)       It is higher speed

(b)       It is finer grained

(c)       It is lower speed

(d)       None of the above

SECTION B (PRACTICAL)

21) Identified that what discontinuity show in radiographic film that is given below:

(a)       mismatch

(b)       porosity

(c)       LoP

(d)       cluster porosity

22) The discontinuities can be classified in:

(a)       rounded or linear

(b)       longitudinal or perpendicular

(c)       OD or ID

(d)       All of the above

23) The radiography testing consisting the following processing:

(a)     Developing, exposing and interpretation

(b)       interpretation, exposing and developing

(c)       exposing, interpretation and developing

(d)       exposing, developing and interpretation

24) If the dark room temperature below the specific temperature then:

(a)       film become more dense

(b)       film become less dense

(c)       no effect on film density

(d)       none of the above

25) A primary purpose of a reference standard is:

(a)       To provide a guide for adjusting instrument controls to reveal discontinuities that are considered harmful to the end use of the product

(b)       To give the technician a tool for determining exact discontinuity size

(c)       To provide assurance that all discontinuities smaller than a certain specified reference reflector are capable of being detected by the test

(d)      To provide a standard reflector this exactly simulates natural discontinuities of a critical size

26) The static mark on film produced by:

(a)       miss handling

(b)       over washing

(c)       over developing

(d)       hard X-ray

27) The number of pentrameter use for single exposure according to doc ASME Sec V:

(a)       1

(b)       2

(c)       3

(d)       4

28) An indication originating from a source other than a discontinuity that resembles an indication from a discontinuity known as:

(a)       Blowhole

(b)       Blister

(c)       Anisotropy

(d)       Artifact

29) The exposure time is depends on:

(a)       energy of source

(b)       job thickness

(c)       (a) and (b)

(d)       none of the above

30) For achieving more density:

(a)       reduce processing time

(b)       increase processing time

(c)       increase film to source distance

(d)       All of the above

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