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RADT 1085 Final Exam Questions with Latest Update
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The changing of alternating current to direct current is known as what? - Answer-Rectification What is the name of the closed path over which electric current flows? - Answer-Circuit What is a device called that allows current to flow in only one direction? - Answer-Conductor Which type of...

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  • October 9, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • radt 1085 final exam questions with latest update
  • the changing of alternating current to direct curr

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RADT 1085 Final Exam Questions with
Latest Update
The changing of alternating current to direct current is known as what? - Answer-
Rectification

What is the name of the closed path over which electric current flows? - Answer-Circuit

What is a device called that allows current to flow in only one direction? - Answer-
Conductor

Which type of rectification will supply the x-ray tube with the greatest power? - Answer-
Full-wave

What is the voltage supplied to the autotransformer called? - Answer-Line voltage

What controls the incoming voltage to the autotransformer? - Answer-Main breaker
switch

Which of the following is the most accurate timer? - Answer-Electronic timer

Tapping windings of the autotransformer to supply voltage to the step-up transformer is
the purpose of which of these? - Answer-kVp selector

If line voltage changes because of demands by other users, automatic adjustments are
made to which of the following? - Answer-Line voltage compensator

Which of the following is placed in the circuit in case of current changes during the
exposure? - Answer-Breaker switch

Where in the x-ray circuit is the timer located? - Answer-Between the autotransformer
and the step-up transformer

Most radiographic equipment manufactured today uses which type of x-ray generator? -
Answer-High-frequency

A high-frequency generator is operated at 100 kVp, 100 ms at 800 mA. What is the
power rating? - Answer-80 kW

What device would be used when the millamperage is set on the control panel? -
Answer-Rheostat

Which of the following meters does NOT register until an x-ray exposure is made? -
Answer-Milliammeter

, Which of the following types of current supplies the x-ray tube? - Answer-Pulsating
direct current

What effect does adjusting the filament control have on the production of x-rays? -
Answer-Controls the quantity

Which of the following is the current indicated by the millimmeter? - 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? - Answer-121 volts

How many solid state rectifiers are needed to produce a single-phase, full-wave rectified
current? - Answer-4

If a full-wave rectified current has 60 cycles per second, how many pulses per second
cross the x-ray tube? - Answer-120

A solid-state rectifier is primarily made of which of the following substances? - Answer-
Silicon

To produce equal density and contrast, exposure to the patient with three-phase
equipment is ____ compared to single-phase. - Answer-Equal

Which of the following generators has a voltage ripple of less than 1%? - Answer-High-
frequency

Which of the following is NOT an advantage of automatic exposure control (AEC)?
1. Eliminates the need to select mAs
2. Duplicates radiographic exposures
3. More latitude in patient positioning - Answer-3 only

Why are high-frequency generators more efficient at producing x-rays than single-phase
generators? - Answer-Voltage never drops to zero

Which of the following is NOT essential to the operation of automatic exposure controls
(AEC)? - Answer-Image intensifier

What are the two kinds of electrical charges? - Answer-positive and negative

What is the unit of electrical charge? - Answer-Coulomb

Which of the following statements is true? - Answer-Unlike charges attract each other

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