Random

Question 1

What causes Scatter UP TO radiation energy of 0.6 MEV

Answer 1

Photo electric

Question 2

Crimping a film shows Light OR dark crescent shapes ?

Answer 2

LIGHT!

Question 3

The Unit of Becquerel of absorbed dose is?

Answer 3

CURRIE

Question 4

Si unit of absorbed dose is ……

Answer 4

Gray

Question 5

Diffraction Mottling occurs in …….

Answer 5

Austenetic steels ,,,,,,(cast)

Question 6

Scratches on a Lead screen will produce……..

Light or dark images ?

Answer 6

LIGHT!!

Question 7

Greinacher circuit is used in ……..

Answer 7

CONSTANT potential X RAY Equipment

Question 8

Radiation Spectrum produced by a gamma ray source is?

Answer 8

Discrete

Several wavelengths

Question 9

X Ray’s and Gamma rays have what in common with Visual light ?

Answer 9

Tavel at the same velocity

300.000 Km/sec

Question 10

Radioactive materials used in industrial Radiation are …..

Answer 10

Neutron Bombardment

Question 11

Penetrating power of X Ray’s is controlled by …….

Answer 11

TUBE VOLTAGE

Question 12

The standard abbreviation used to denote Atomic Number is….

Answer 12

Z

Question 13

What causes scatter ABOVE 6 MEV?

Answer 13

Pair Production

Question 14

Which method can be used in radiography to determine the through wall position of a defect such as a slag inclusion?

A- the pinhole camera technique
B- A tube or source shift technique ( also called Paralax technique )
C- Carefully measure of film density using a microdensitometer
D- The through wall position of such defects cannot be determined by radiography .

Answer 14

B - A tube or source shift technique ( Paralax )