W/L Ch 17 Safety and Protection Quiz

Question 1

Electrons have a quality factor (QF) of _____.

a. 1
b. 5
c. 10
d. 20

Answer 1

a. 1

Question 2

What is the radiation weighting factor for gamma-rays?

a. 1
b. 5
c. 10
d. 20

Answer 2

a. 1

Question 3

What is the radiation weighting factor for alpha particles?

a. 1
b. 5
c. 10
d. 20

Answer 3

d. 20

Question 4

X-rays have a quality factor of ________.

a. 1
b. 5
c. 10
d. 20

Answer 4

a. 1

Question 5

Slow neutrons have a quality factor of _________.

a. 1
b. 5
c. 10
d. 20

Answer 5

b. 5

Question 6

The annual dose equivalent limit to the whole body for occupationally exposed individuals is _____ mSv.

a. 50
b. 100
c. 150
d. 500

Answer 6

a. 50

p. 344, table 17-4

Question 7

The annual dose equivalent limit to the lens of the eye for occupationally exposed individuals is ____ mSv.

a. 50
b. 100
c. 150
d. 500

Answer 7

c. 150

Question 8

The annual dose equivalent limit to the heart for occupationally exposed individuals is ____ mSv.

a. 50
b. 100
c. 150
d. 500

Answer 8

d. 500

Question 9

The annual dose equivalent limit to the whole body for frequent nonoccupationally exposed individuals is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 9

b. 1

Question 10

The annual dose equivalent limit to the whole body for infrequent nonoccupationally exposed individuals is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 10

c. 5

Question 11

The annual dose equivalent limit to the lens of the eye for nonoccupationally exposed individuals is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 11

d. 50

Question 12

The annual dose equivalent limit to the whole body for educationally exposed individuals is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 12

b. 1

Question 13

The annual dose equivalent limit to the lens of the eye for educationally exposed individuals is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 13

d. 50

Question 14

The monthly dose equivalent limit to an embryo/fetus is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 14

a. 0.5

Question 15

The total gestational dose equivalent limit is ____ mSv.

a. 0.5
b. 1
c. 5
d. 50

Answer 15

c. 5

Question 16

Smoking cigarettes increases an individual’s radiation exposure by ____ mSv.

a. 0.2
b. 0.11
c. 13
d. 11

Answer 16

c. 13

Question 17

The average annual dose received by the general public from all naturally occurring radiation sources is ____ mSv.

a. 3
b. 2
c. 1
d. 0.5

Answer 17

a. 3

Question 18

The average annual dose received by the general public from radon is ____ mSv.

a. 3
b. 2
c. 1
d. 0.5

Answer 18

b. 2

Question 19

The average annual dose received by the general public from all medical radiation procedures is ____ mSv.

a. 3
b. 2
c. 1
d. 0.5

Answer 19

d. 0.5

Question 20

The average annual dose received by the general public from naturally occurring internal radiation is ____ mSv.

a. 0.2
b. 0.11
c. 13
d. 11

Answer 20

a. 0.2

Question 21

The current recommended negligible individual risk level is ____ mSv/yr.

a. 0.001
b. 0.01
c. 0.1
d. 1

Answer 21

b. 0.01

Question 22

Thermoluminescent dosimeters are composed of ____.

a. Ra
b. Al2O3
c. Ce
d. LiF

Answer 22

d. LiF

Question 23

Which of the following would not be helpful in a personnel radiation-monitoring program?

a. Film badges
b. Routine blood examinations
c. Pocket ionization chambers
d. TLDs

Answer 23

b. Routine blood examinations

Question 24

Which of the following materials are used in room shielding?
I.   Cerrobend
II.  Concrete
III. Lead
IV. Steel

a. I and III
b. I, II, and III
c. II, III, and IV
d. I, II, III, and IV

Answer 24

c. II, III, and IV

Question 25

Which of the following describes why filters are used in film badges? a. To discriminate different directions of radiation b. To discriminate different radiation energies and types c. To correct for film fogging due to exposure d. To increase the sensitivity of the measuring device

Answer 25

b. To discriminate different radiation energies and types

Question 26

Which agency provides information and recommendations in the public interest concerning radiation measurements and protection? a. ACR b. NCRP c. ALARA d. AER

Answer 26

b. NCRP

Question 27

Which particles have the highest linear energy transfer? a. Alpha particles b. Beta particles c. X-rays d. Gamma-rays

Answer 27

a. Alpha particles

Question 28

Which particles can be electrons? a. Alpha particles b. Beta particles c. X-rays d. Gamma-rays

Answer 28

b. Beta particles

Question 29

Which of the following is not a natural source of background radiation? a. Cosmic rays b. Radium and uranium c. Carbon 14 d. Nuclear fallout

Answer 29

d. Nuclear fallout

Question 30

It is recommended that gestational dose be ________________________. a. unequally shifted to the third trimester b. unequally shifted to the first trimester c. unequally shifted to the second trimester d. evenly distributed throughout the gestational period

Answer 30

d. evenly distributed throughout the gestational period It is recommended that the exposure be distributed uniformly with respect to time or trimester.

Question 31

One half-value layer thickness in concrete would be__________ one half-value layer thickness in lead for a Cobalt 60 beam. a. less than b. greater than c. equivalent to

Answer 31

b. greater than