Question 1

Which of the following x-ray generators produces the greatest amount of x-rays for the same exposure technique?

Accepted Answer

A)   1-phase
B)   3-phase, 6-pulse
C)   3-phase, 12-pulse
D)   High-frequency

Question 2

In a high-frequency generator,the incoming 60 Hz electrical frequency is raised to what level?

Accepted Answer

A)   2,500 Hz
B)   5,000 Hz
C)   6,000 Hz
D)   8,000 Hz

Question 3

X-ray exposure times that can be set on the generator can go up to as high as ____ sec.

Accepted Answer

A)   4
B)   5
C)   6
D)   8

Question 4

Which of the following is the formula to calculate the heat produced by an exposure made on a three-phase generator?

Accepted Answer

A)   mA × time (sec)  × kVp
B)   mA × time (sec)  × 1.10
C)   mA × time (sec)  × 1.35
D)   mA × time (sec)  × 1.40

Question 5

For which exposure technique system would a technique chart not be necessary?

Accepted Answer

A)   Density control
B)   AEC
C)   APR
D)   Manual techniques

Question 6

In which circuit is the step-up transformer located?

Accepted Answer

A)   Incoming
B)   Filament
C)   Low-voltage
D)   High-voltage

Question 7

Which of the following is the function of the autotransformer?
1)  Provides the means for variable kVp selection
2)  Provides compensation for fluctuations in the incoming line voltage
3)  Supplies power to the other parts of the x-ray circuit

Accepted Answer

A)   1 and 2 only
B)   1 and 3 only
C)   2 and 3 only
D)   1, 2, and 3

Question 8

Which of the following is located on the low-voltage side of the x-ray circuit and functions to measure the voltage output from the autotransformer?

Accepted Answer

A)   Exposure timer
B)   Step-down transformer
C)   Step-up transformer
D)   Rectifier

Question 9

When using automatic exposure control (AEC) for setting exposure techniques,which technical factor does not have to be set?

Accepted Answer

A)   mA
B)   mAs
C)   kVp
D)   Exposure time D

Question 10

The process of causing alternating (A-C) current to flow in one direction (D-C) only is called:

Accepted Answer

A)   rectification.
B)   induction.
C)   grounding.
D)   compensation.

Question 11

Which of the following components are located on the low-voltage side of the x-ray circuit?
1)  kVp selector
2)  Autotransformer
3)  Step-up transformer

Accepted Answer

A)   1 only
B)   1 and 2 only
C)   2 and 3 only
D)   1, 2, and 3

Question 12

Which of the following transformers reduces the voltage on the secondary side to provide an appropriate current to heat the filament?

Accepted Answer

A)   Autotransformer
B)   Step-down transformer
C)   Step-up transformer
D)   mA meter

Question 13

The x-ray tube capacity for a single exposure can be determined by consulting the:

Accepted Answer

A)   tube rating chart.
B)   generator manual.
C)   kVp maximum setting.
D)   mA maximum setting. A

Question 14

Which type of exposure timer is capable of shorter exposure times (1 msec or less) ?

Accepted Answer

A)   Synchronous timer
B)   Electronic timer
C)   Manual timer
D)   Back-up timer

Question 15

What is the purpose of the filament circuit?

Accepted Answer

A)   Supplies the heat required by the x-ray tube filament for thermionic emission of electrons
B)   Provides the incoming power to the x-ray tube
C)   Varies and stabilizes the incoming power to the high-voltage side of the x-ray circuit
D)   Varies the voltage to the primary side of the step-up transformer

Question 16

How many x-ray exposures should be made to warm up the x-ray tube?

Accepted Answer

A)   1
B)   2
C)   3
D)   4 C

Question 17

Which of the following must be absolutely accurate when using AEC for exposure technique?

Accepted Answer

A)   Setting the central ray
B)   Patient positioning
C)   Collimation size
D)   Determining the correct kVp

Question 18

A series of warm-up exposures is made on a cold x-ray tube to:

Accepted Answer

A)   heat the filament.
B)   prevent damage to the anode from sudden heating.
C)   bring the anode rotor up to speed.
D)   check that the machine is working properly.

Question 19

Every x-ray exposure that is made will have what technical factors set on the control panel?
1)  mA
2)  kVp
3)  Exposure time

Accepted Answer

A)   1 and 2
B)   1 and 3
C)   2 and 3
D)   1, 2, and 3

Question 20

Which of the following x-ray generators will produce the greatest amount of heat for the same exposure technique?

Accepted Answer

A)   1-phase
B)   3-phase
C)   3-phase, 12-pulse
D)   High-frequency

Exam 6: X-Ray Circuit and Tube Heat Management

Which of the following x-ray generators produces the greatest amount of x-rays for the same exposure technique?

Correct AnswerverifiedShow Answer

In a high-frequency generator,the incoming 60 Hz electrical frequency is raised to what level?

Correct AnswerverifiedShow Answer

X-ray exposure times that can be set on the generator can go up to as high as ____ sec.

Correct AnswerverifiedShow Answer

Which of the following is the formula to calculate the heat produced by an exposure made on a three-phase generator?

Correct AnswerverifiedShow Answer

For which exposure technique system would a technique chart not be necessary?

Correct AnswerverifiedShow Answer

In which circuit is the step-up transformer located?

Correct AnswerverifiedShow Answer

Which of the following is the function of the autotransformer? 1) Provides the means for variable kVp selection 2) Provides compensation for fluctuations in the incoming line voltage 3) Supplies power to the other parts of the x-ray circuit

Correct AnswerverifiedShow Answer

Which of the following is located on the low-voltage side of the x-ray circuit and functions to measure the voltage output from the autotransformer?

Correct AnswerverifiedShow Answer

When using automatic exposure control (AEC) for setting exposure techniques,which technical factor does not have to be set?

Correct AnswerverifiedD

The process of causing alternating (A-C) current to flow in one direction (D-C) only is called:

Correct AnswerverifiedShow Answer

Which of the following components are located on the low-voltage side of the x-ray circuit? 1) kVp selector 2) Autotransformer 3) Step-up transformer

Correct AnswerverifiedShow Answer

Which of the following transformers reduces the voltage on the secondary side to provide an appropriate current to heat the filament?

Correct AnswerverifiedShow Answer

The x-ray tube capacity for a single exposure can be determined by consulting the:

Correct AnswerverifiedA

Which type of exposure timer is capable of shorter exposure times (1 msec or less) ?

Correct AnswerverifiedShow Answer

What is the purpose of the filament circuit?

Correct AnswerverifiedShow Answer

How many x-ray exposures should be made to warm up the x-ray tube?

Correct AnswerverifiedC

Which of the following must be absolutely accurate when using AEC for exposure technique?

Correct AnswerverifiedShow Answer

A series of warm-up exposures is made on a cold x-ray tube to:

Correct AnswerverifiedShow Answer

Every x-ray exposure that is made will have what technical factors set on the control panel? 1) mA 2) kVp 3) Exposure time

Correct AnswerverifiedShow Answer

Which of the following x-ray generators will produce the greatest amount of heat for the same exposure technique?

Correct AnswerverifiedShow Answer

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D

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C

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