Chapter 5 Quiz

Question 1

A 3 phase-6 pulse generator will produce how many pulses in one second?

a.) 360
b.) 1/120
c.) 1/60
d.) 720

Answer 1

a.) 360

Question 2

An exposure is made in January at 70 kvp and 10 mas and produces a radiation output of 50 mR. The same exposure factors are used again in July and the same output of 50 mR is expected. This is called:

a.) linearity
b.) reproducibility
c.) reciprocity
d.) accuracy

Answer 2

b.) reproductibility

Question 3

Voltage ripple for a single phase generator?

a.) 3.5%
b.) 1-15%
c.) 13%
d.) 100%

Answer 3

d.) 100%

Question 4

Contamination of a nuclear medicine department is detected using a :

a.) geiger-muller
b.) proportional counter
c.) ion chamber
d.) pocket dosimeter

Answer 4

a.) geiger-muller

Question 5

Which type of generator uses multiple sources of alternating current so that the voltage never drops to zero?

a.) single phase half wave
b.) single phase full wave
c.) failing load
d.) three phase

Answer 5

d.) three phase

Question 6

A 3 phase-12 pulse generator will produce how many pulses in one second?

a.) 1/1000
b.) 720
c.) 360
d.) 1/120

Answer 6

b.) 720

Question 7

If there is inaccuracy of the timer, what could result?

a.) insufficient density
b.) image distortion
c.) excessive contrast
d.) increased patient dose

Answer 7

d.) increased patient dose

Question 8

The SID indicator must be within _________% of the actual SID.

a.) 5
b.) 1
c.) 2
d.) 10

Answer 8

c.) 2

Question 9

Electrical current in the US is ________Hz.

a.) 100
b.) 60
c.) 220
d.) 120

Answer 9

b.) 60

Question 10

An xray generator that is used on the battlefield is called a:

a.) mobile
b.) portable

Answer 10

b.) portable

Question 11

Any variations between the stated kvp on the control panel and the measured kvp must be +/- ____________%

a.) 20
b.) 5
c.) 10
d.) 2

Answer 11

b.) 5

Question 12

Radiographic kvp should be evaluated:

a.) weekly
b.) monthly
c.) annuallly
d.) semiannually

Answer 12

c.) annually

Question 13

Beam quantity should be within +/-

a.) 1%
b.) 5%
c.)2%
d.) 10%

Answer 13

d.) 10%

Question 14

Per guidelines, how many times must xrays scatter before they can enter any opening in the control booth?

Answer 14

2

Question 15

A quality control program for radiographic equipment should include which of the following:
1.) visual inspection
2.) enviromental inspection,
3.) performance testing

Answer 15

1, 2 and 3

Question 16

A high frequency generator can use current thats been altered as much as ___________ Hz before being rectified

a.) 60,000
b.) 100,000
c.) 120
d.) 60

Answer 16

b.) 100,000

Question 17

Variations for mAs accuarcy should be within ____________%

a.) 10
b.) 2
c.) 5
d.) 1

Answer 17

a.) 10