Chapter 6 Notes

Question 1

diagnostic x-ray units operate within a range of

Answer 1

10-1,200 milliamperes (mA), 0.001-10 seconds, and at a peak kilovoltage (kVp) of about 25-150

Question 2

nearly all x-ray equipment operates from an incoming line of

Answer 2

210-220 volts

Question 3

basic x-ray circuit can be divided into

Answer 3

the main and filament circuits

Question 4

main circuit supplies the _____ with properly modified power

Answer 4

x-ray tube

Question 5

filament circuit supplies what with properly modified power

Answer 5

the filament

Question 6

basic circuit includes

Answer 6

exposure switch, timer, high-voltage step-up transformer, and rectifier circuit

Question 7

power is expressed in

Answer 7

watts

Question 8

AECs today are almost always what

Answer 8

ionization chambers

Question 9

to avoid problems when using an AEC

Answer 9

consider the minimum reaction time and the backup time

Question 10

two types of x-ray equipment

Answer 10

diagnostic and therapeutic

Question 11

tube supports include

Answer 11

overhead 3-D tubecrane suspension, floor to ceiling, floor mounted, mobile, and C-arm

Question 12

single-phase power produces what percent voltage ripple

Answer 12

100%

Question 13

mobile equipment requires how long of a cord for the exposure switch

Answer 13

6-foot

Question 14

timer circuit does what

Answer 14

regulates exposure termination

Question 15

x-ray generator power rating is expressed in

Answer 15

kilowatts (kW)

Question 16

AEC’s do what

Answer 16

terminate exposure based upon a predetermined exposure value

Question 17

AEC’s only control what

Answer 17

exposure time

Question 18

AEC’s are commonly called what

Answer 18

phototiming

Question 19

ionization chambers typically have how many detector positions

Answer 19

3

Question 20

backup time circuit should be set at least what percentage of anticipated manual technique

Answer 20

150%