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RADT 456 Equip Op
ARRT registry review covering equipment operation
| Question | Answer |
|---|---|
| This is caused by a high-speed electron redirecting and losing energy | Bremsstrahlung x-rays |
| A K shell electron is ejected and an L shell electron moves to fill the vacancy | characteristic x-rays |
| In diagnostic range,contributes to patient dose, and releases characteristic x-rays | photoelectric effect |
| more prevalent in higher energy ranges and contributes to occupational dose | compton scatter |
| outside diagnostic range, 2 particles- an electron and positron result | pair production |
| a smaller anode angle gives a smaller | effective focal spot |
| change mechanical energy to electrical energy | generators |
| has one winding and operates on self-induction | autotransformer |
| more windings on the secondary coil | step-up transformer |
| a single phase half wave generator has what % of voltage ripple | 100% |
| a three-phase twelve pulse generator has what % of voltage ripple | 4% |
| the input phosphor converts what to what | x-rays to light |
| boiling off off of electrons when the filament is heated | thermionic emission |
| the output phosphor converts what to what | electrons to light |
| the effective focal spot is always smaller than the actual focal spot according to what priciple | line focus principle |
| functions to automatically adjust for any fluctuations in incoming voltage | line voltage compensator |
| the mA meter is found in what circuit | secondary/high-voltage circuit |
| the mA selector is found in what circuit | filament circuit |
| a synchronous spinning-top test is used to test timer accuracy in what kind of equipment | three phase |
| QA term describing the same radiation output for different stations/combos | reciprocity |