Prolonged heating of the x-ray tube filament when preparing for a radiographic exposure may lead to which of the following?     1. Electrical arcing     2. Premature filament breakage     3. Anode surface melting

  A backup timer for the AEC can serve to :   1.  protect the patient from overexposure   2  .prevent motion on the radiographic image  3.  protect the technologist from excessive exposure 

  A backup timer for the AEC can serve to :   1.  protect the patient from overexposure   2  .prevent motion on the radiographic image  3.  protect the technologist from excessive exposure 

Three phase six pulse rectification will have a ________% voltage drop. 

Anode angle will have an effect on the    1. severity of the heel effect    2, focal-spot size    3. heat-load capacity

The changing of alternating current to direct current is known as:

What is the formula for heat units for a single phase x-ray machine?

The changing of alternating current to direct current is known as:

The device that is used to change AC to unidirectional current is  a :

Conditions that contribute to x-ray tube damage include 1.lengthy anode rotation 2.exposures to a cold anode 3.low-milliampere-seconds/high- kilovoltage exposure factors