LMRT Core Review Test Questions with 100% Complete Solutions A+

O/S the glass envelope& inside the rotor - Where is the stator of the anode induction motor located? Autotransformer & the timer circuit - The exposure switch is found between the Variable resistor - The electrical device used to adjust the mA selection is a/an Incoming line & the step-down transformer - The timer control is found b/w the Incoming line & the exposure switch - The kVp control is found b/w the Rotor speed - All of the following are radiographer-operated controls EXCEPT Smaller Object Image Distance (OID) - The key advantage of a curved-top radiographic table is the Must not exceed 600 mAs - When using AEC at 80 kVp, b/u times Fluoroscopic tower - All of the following are XR tube support systems EXCEPT 210V - Nearly all the types of XR equipment operate from an incoming line of Voltage - When full-wave rectification is applied to 3-phase current, a_ ripple is produced. 6 - A 3-phase, rectified current produces a voltage ripple of_ pulses per Hz. Handgrips - Ancillary equipment for titling tables includes Low abrasion surface to lessen patient slippage as they transfer - All of the following are desired features radiographic tables EXCEPT Exposure time - Automatic exposure control (AEC) technology determines Have a tendency to produce leakage exposure after exposure termination - When compared to battery-powered portable radiographic units, capacitor discharge mobile units Thermionic Emission - All of the following are related except one. Select the one that is NOT RELATED. Copper - All of the following are preferred cathode filament materials EXCEPT High melting points - Filament materials are chosen primarily for their A small amperage - Driving the thermionic cloud from the cathode to the anode requires 3-three phase generators are preferred - In order to time the XR exposure w/rapid inspiration on an infant Space Charge Effect - As more & more electron build up in the area of the filament, their negative charges oppose the emission of add't electrons High atomic # - Tungsten is the metal of choice for the source of XR photons b/c of its With extended use - Pitting of the anode commonly occurs When the stator fails & the rotor ceases to turn - Melting of the anode commonly occurs When a cold anode is hit w/a high kVp exposure - Cracking of the anode typically occurs Effective focal spot - The area of the focal spot that is projected out of the tube toward the object being radiograph is the