Which must be connected in parallel? Filament ammeter, milliampmeter, voltmeter, rectifier. Which devices controls voltage by varying resistance? auto transformer, high voltage transformer, rheostat, Which of following voltage ripples is produced by single phase equipment, 100% voltage ripple, 13% voltage ripple, 3.5% ripple.ĭecreased x ray tube output can be attributed to? rough focal track, tungsten deposits on glass envelope, high speed anode rotation.Īll of following devices may be located on control panel except, ma meter, kvp selector, timer, filament ammeterĪs the x ray tube filament ages, it becomes thinner due to evaporation, tungsten is deposited on glass envelope: act as filter, reduce x ray output, result in arcing If one rectifier were malfunctioning resultant mas would be ¼ of expected, ½ expected, twice expected or four times expected. Which of following devices converts electrical energy into mechanical energy:īasic function of the phototimer: provide brighter image, restrict field size, terminate exposure when correctly exposed, automatically increase or decrease incoming voltage. The photo electric process is an interaction between? With 3 phase equipment, voltage across the x ray tube? 1. Which of following portions of the x ray circuit is the step down transformer located? high voltage side, filament circuit, rectification system, secondary side. What is the relationship between kilovoltage and half value layer? as kv increases half value increases, kv decreases half value decreases, if kv is dbl then kv is dbl, if kv dbled half value is squared. Which of the following combinations will have greatest heat loading capability, 17 degree target angle & 1.2 mm actual focal spot, 10 degree target angle & 1.2 mm focal spot, 17 degree target &. low mas high kvp, avoiding lengthy anode rotation, avoiding exposures to cold anode. X ray tube life may be extended by using. What component of the x ray tube is a graphite disc having a tungsten radium track at its periphery? The source of electrons within the x ray tube are result of? Inadequate collimationg when using aec often results in … under exposed xray… over exposed image, timer not terminating soon enough… …less pronounced anode heel effect… decrease effective focal spot size, greater photon intensity towards cathode side of x ray tube…ĭECREASE EFFECTIVE EFFECTIVE FOCAL SPOT SIZE, GREATER PHOTON INTENSITY TOWARDS CATHODE SIDE OF X RAY TUBE Which of following will occur as a result in a decrease in the anode target angle. The filtering effect of the glass envelope and oil in x ray tube are referred to as? Which of following devices operates on self induction: auto transformer, high voltage transformer, choke coil. Minimum response time of the automatic exposure control is : time required to energize, Shortest possible exposure time, function to prevent over exposure, protect from excessive heat. Physics quiz physics quiz bowl quest Question