RADT 1085 Final UPDATED ACTUAL
QUESTIONS and CORRECT Answers
The changing of alternating current to direct current is known as what? - CORRECT
ANSWER - Rectification
What is the name of the closed path over which electric current flows? - CORRECT
ANSWER - Circuit
What is a device called that allows current to flow in only one direction? - CORRECT
ANSWER - Conductor
Which type of rectification will supply the x-ray tube with the greatest power? - CORRECT
ANSWER - Full-wave
What is the voltage supplied to the autotransformer called? - CORRECT ANSWER - Line
voltage
What controls the incoming voltage to the autotransformer? - CORRECT ANSWER -
Main breaker switch
Which of the following is the most accurate timer? - CORRECT ANSWER - Electronic
timer
Tapping windings of the autotransformer to supply voltage to the step-up transformer is the
purpose of which of these? - CORRECT ANSWER - kVp selector
If line voltage changes because of demands by other users, automatic adjustments are made to
which of the following? - CORRECT ANSWER - Line voltage compensator
, Which of the following is placed in the circuit in case of current changes during the exposure? -
CORRECT ANSWER - Breaker switch
Where in the x-ray circuit is the timer located? - CORRECT ANSWER - Between the
autotransformer and the step-up transformer
Most radiographic equipment manufactured today uses which type of x-ray generator? -
CORRECT ANSWER - High-frequency
A high-frequency generator is operated at 100 kVp, 100 ms at 800 mA. What is the power
rating? - CORRECT ANSWER - 80 kW
What device would be used when the millamperage is set on the control panel? - CORRECT
ANSWER - Rheostat
Which of the following meters does NOT register until an x-ray exposure is made? - CORRECT
ANSWER - Milliammeter
Which of the following types of current supplies the x-ray tube? - CORRECT ANSWER -
Pulsating direct current
What effect does adjusting the filament control have on the production of x-rays? - CORRECT
ANSWER - Controls the quantity
Which of the following is the current indicated by the millimmeter? - CORRECT
ANSWER - Tube current
The incoming line voltage is 220 volts. 55% of the turns on the autotransformer are used. What
is the voltage sent to the step-up transformer? - CORRECT ANSWER - 121 volts
QUESTIONS and CORRECT Answers
The changing of alternating current to direct current is known as what? - CORRECT
ANSWER - Rectification
What is the name of the closed path over which electric current flows? - CORRECT
ANSWER - Circuit
What is a device called that allows current to flow in only one direction? - CORRECT
ANSWER - Conductor
Which type of rectification will supply the x-ray tube with the greatest power? - CORRECT
ANSWER - Full-wave
What is the voltage supplied to the autotransformer called? - CORRECT ANSWER - Line
voltage
What controls the incoming voltage to the autotransformer? - CORRECT ANSWER -
Main breaker switch
Which of the following is the most accurate timer? - CORRECT ANSWER - Electronic
timer
Tapping windings of the autotransformer to supply voltage to the step-up transformer is the
purpose of which of these? - CORRECT ANSWER - kVp selector
If line voltage changes because of demands by other users, automatic adjustments are made to
which of the following? - CORRECT ANSWER - Line voltage compensator
, Which of the following is placed in the circuit in case of current changes during the exposure? -
CORRECT ANSWER - Breaker switch
Where in the x-ray circuit is the timer located? - CORRECT ANSWER - Between the
autotransformer and the step-up transformer
Most radiographic equipment manufactured today uses which type of x-ray generator? -
CORRECT ANSWER - High-frequency
A high-frequency generator is operated at 100 kVp, 100 ms at 800 mA. What is the power
rating? - CORRECT ANSWER - 80 kW
What device would be used when the millamperage is set on the control panel? - CORRECT
ANSWER - Rheostat
Which of the following meters does NOT register until an x-ray exposure is made? - CORRECT
ANSWER - Milliammeter
Which of the following types of current supplies the x-ray tube? - CORRECT ANSWER -
Pulsating direct current
What effect does adjusting the filament control have on the production of x-rays? - CORRECT
ANSWER - Controls the quantity
Which of the following is the current indicated by the millimmeter? - CORRECT
ANSWER - Tube current
The incoming line voltage is 220 volts. 55% of the turns on the autotransformer are used. What
is the voltage sent to the step-up transformer? - CORRECT ANSWER - 121 volts
