STUDY GUIDE 2026 TEST PAPER
QUESTIONS AND SOLUTIONS
⩥ half wave rectification equals how many pulses. Answer: 60
⩥ full wave rectification equals how many pulses. Answer: 120
⩥ single phase rectification equals how many pulses. Answer: it drops to
0 every single time meaning its on & off
⩥ 3 phase- 360 pulse. Answer: 100% ripple
⩥ 3 phase- 6 pulse. Answer: 13-25% ripple
⩥ 3 phase- 12 pulse. Answer: 4-12% ripple
⩥ charged coupled device. Answer: component which light enters and is
converted into video or electronic signal
⩥ thin film transistor. Answer: used to read charges collected during an
exposure
,⩥ photodiode. Answer: A silicon solid state device sensitive to light.
Converts light into an electrical signal.
⩥ flat panel detector. Answer: a type of digital detector employing
amorphous silicon or selenium detector material, bonded with thin-film
transistor technology for digital image creation and amplification
⩥ what causes foreshortening?. Answer: body part is misaligned
⩥ ANTISEPSIS. Answer: stop/slow down growth of microorganisms
⩥ DISINFECTION. Answer: complete destruction
⩥ AS LET INCREASES RBE INCREASES. Answer:
⩥ lead required in aprons & thyroid shield. Answer: 0.50mm
⩥ nontreshold. Answer: the x value starts at 0 & is long term effects
⩥ at what value do you see blood changes?. Answer: 250 msv / 0.25sv
⩥ annual effective dose for techs. Answer: 50msv
, ⩥ limit dose for a pregnant tech. Answer: monthly: 0.5 msv
entire pregnancy: 5.0 msv
⩥ cumulative effective dose for techs. Answer: age x 10 = ____ msv
⩥ at what value do you see erythema?. Answer: 2,000 msv
⩥ long term effects. Answer: cataracts
carcnogenesis
life span shortening
leukemia
⩥ at what value do you see death??. Answer: 6,000 msv / 6.0 sv
⩥ treshold. Answer: the x value starts above 0 & is short term
⩥ lead required in gloves. Answer: 0.25mm
⩥ how does fog look on an image. Answer: cloudy
⩥ how does penumbra look on an image. Answer: light & fuzzy