Proyecto RT.1 (1-50)

Question

1. Which of the following types of intensifying screens are not used in industrial radiography?

Answer 1

(b) Fluorescent

Answer 2

(c) Silver halide

Answer 3

(d) All of the above

Answer 4

(a) Several MeV

Answer 5

(b) 50-500 keV

Answer 6

(c) 500-1000 keV

Answer 7

(d) 0-50 keV

Answer 8

(a) Ir-192

Answer 9

(b) Ra-226

Answer 10

(d) All of the above

Answer 11

Development

Answer 12

An X ray machine

Answer 13

A linear accelerator

Answer 14

A gamma ray source

Answer 15

A betatron

Answer 16

Secondary X ray emission

Answer 17

Secondary gamma ray emissions

Answer 18

Fluorescence of lead screens

Answer 19

Electron emission

Answer 20

Ultraviolet radiation

Answer 21

Over 38 mm in diameter

Answer 22

88 mm in diameter or less

Answer 23

125 mm in diameter and less

Answer 24

Under 25 mm in diameter

Answer 25

(a) Individual sheets for use in cassettes

Answer 26

(c) Pre-packaged (‘day-pack’)

Answer 27

(d) All of the above

Answer 28

(d) None of the above

Answer 29

(a) From floors and walls adjacent to the test piece

Answer 30

(b) From other nearby objects

Answer 31

(c) From the test piece itself

Answer 32

(d) From the lead intensifying screens

Answer 33

(a) Decrease required exposure time

Answer 34

(b) Diminish contrast, detail and clarity of radiographic image

Answer 35

(c) Decrease film density

Answer 36

(d) All of the above

Answer 37

(a) Film density

Answer 38

(b) Image quality

Answer 39

(c) Degree of removal of fixer residues during washing

Answer 40

(d) Degree of removal of developer residues during washing

Answer 41

(a) Only with a very small source or focal spot size radiation source

Answer 42

(b) Routinely

Answer 43

(c) With most sources

Answer 44

(a) High definition

Answer 45

(b) Screen mottle

Answer 46

(c) Non-linear attenuation

Answer 47

(d) Displaced core effect

Answer 48

(a) Milliamperage

Answer 49

(b) Tube voltage

Answer 50

(c) Filament current

Answer 51

(d) Anode current

Answer 52

(a) Inadequate agitation of the film during development

Answer 53

(b) Inadequate water rinse during processing

Answer 54

(c) Using exhausted stop bath solution

Answer 55

(d) Developing solutions not maintained at the same temperatures.

Answer 56

(a) Heat is conducted away more efficiently than with a large focal spot

Answer 57

(b) A smaller focal spot is unlikely to be damaged from the required tube currents

Answer 58

(c) Longer tube life

Answer 59

(d) A smaller focal spot allows sharper radiographic images than does a larger focal spot

Answer 60

(a) Fission of Uranium-235

Answer 61

(b) Neutron capture by Cobalt-59

Answer 62

(c) Radioactive decay

Answer 63

(d) None of the above

Answer 64

(a) Type of isotope used

Answer 65

(b) Energy level of gamma rays in source

Answer 66

(c) Source strength in curies

Answer 67

(d) None of the above

Answer 68

(a) The focal spot should be as small as practicable

Answer 69

(b) The focal spot to test piece distance should be as large as practicable

Answer 70

(c) The film to test piece distance should be as small as practicable

Answer 71

(d) All of the above

Answer 72

(a) I1/I2 = D1^2/D2^2

Answer 73

(b) I1^2/I2^2 = D1/D2

Answer 74

(c) I1/I2 = D2^2/D1^2

Answer 75

(d) I1^2/I2^2 = D2/D1

Answer 76

(a) Lower kV X rays

Answer 77

(b) Higher mA X rays

Answer 78

(c) Higher kV X rays

Answer 79

(d) Lower mA X rays

Answer 80

(a) Radiographic shim

Answer 81

(b) Image quality indicator

Answer 82

(c) Density standard

Answer 83

(d) Acceptance standard

Answer 84

(a) Check the film for film quality

Answer 85

(b) Check for under developed films

Answer 86

(c) Check for film artifacts

Answer 87

(d) All the above answers are correct

Answer 88

(a) Film contrast

Answer 89

(b) Radiographic contrast

Answer 90

(c) Subject contrast

Answer 91

(d) Radiographic sensitivity

Answer 92

(b) Medium

Answer 93

(d) No difference in the grain sizes

Answer 94

(a) Radiation may be turned on or off at will

Answer 95

(b) Outside power is normally not required

Answer 96

(c) Less shielding is required than for X ray

Answer 97

(d) All of the above

Answer 98

(a) Shorter wavelengths X rays

Answer 99

(b) Less penetrating X rays

Answer 100

(c) Fewer X rays in the primary beam

Answer 101

(d) All of the above

Answer 102

(a) A hot tear

Answer 103

(b) Shrinkage

Answer 104

(c) A cold crack

Answer 105

(d) A cold shut

Answer 106

(a) Radioactive isotopes

Answer 107

(b) The rapid deceleration of electrons

Answer 108

(c) Ultraviolet radiation of unstable atoms

Answer 109

(d) All of the above

Answer 110

(a) To reduce geometric unsharpness

Answer 111

(b) To increase scatter

Answer 112

(c) To reduce exposure time

Answer 113

(d) All of the above

Answer 114

(a) Check for archival film quality

Answer 115

(b) Check for out of date film

Answer 116

(c) Check for single versus double emulsion film

Answer 117

(d) Any of the above

Answer 118

(a) Several MeV

Answer 119

(b) 50-500 keV

Answer 120

(c) 500-1000 keV

Answer 121

(d) 0-50 keV

Answer 122

(a) Longer than the wavelength of the primary beam

Answer 123

(b) Shorter than the wavelength of the primary beam

Answer 124

(c) Same as the wavelength of the primary beam

Answer 125

(d) Not related

Answer 126

(a) Brightness of surroundings approximately the same as the area of interest on the radiograph

Answer 127

(b) Totally dark viewing room

Answer 128

(c) Well lit viewing room

Answer 129

(d) None of the above

Answer 130

(a) Make high quality radiographs for critical inspection

Answer 131

(b) Determine focal spot size

Answer 132

(c) Construct exposure charts

Answer 133

(d) None of the above

Answer 134

(a) Porosity

Answer 135

(b) Undercut

Answer 136

(c) Tungsten inclusions

Answer 137

(d) A linear crack

Answer 138

(a) Developing

Answer 139

(b) Fixing

Answer 140

(c) Washing

Answer 141

(d) None of the above

Answer 142

(a) 600 keV

Answer 143

(b) 1.2 MeV

Answer 144

(d) None of the above

Answer 145

(a) 5 mm–20 mm

Answer 146

(b) 25mm–75mm

Answer 147

(c) 0.5mm–5mm

Answer 148

(d) 75mm–150mm

Answer 149

(a) The geometric unsharpness

Answer 150

(b) Kilovoltage peak output

Answer 151

(c) Required mA setting

Answer 152

(d) Exposure time

Answer 153

(a) Cathode current

Answer 154

(b) Step down ratio of the filament transformer

Answer 155

(c) The distance from the test piece

Answer 156

(d) Size of the anode (target)

Answer 157

(a) Radiographic contrast

Answer 158

(b) Radiographic sensitivity

Answer 159

(c) Radiographic density

Answer 160

(d) Radiographic resolution

Answer 161

(a) Ug = FD/T

Answer 162

(b) Ug = DT/F

Answer 163

(c) Ug = FT/D

Answer 164

(d) Ug = FTD

Answer 165

(a) More closely control development

Answer 166

(b) Prevent formation of water marks during the drying stage

Answer 167

(c) Reduce formation of air bubbles in the developer solution

Answer 168

(d) Reduce formation of air bubbles in the fixer

Answer 169

(a) Decrease exposure time

Answer 170

(b) Increase grain size

Answer 171

(c) Shield film from stray light

Answer 172

(d) All of the above

	Criado por ETSI Daniel Gomez mais de 9 anos atrás

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