Question 1

The protective tube housing is lined with

Accepted Answer

A)  aluminum
B)  copper
C)  lead
D)  glassE) B) and D)
F) A) and C)

Question 2

The formula kVp × mA × s × c is used to calculate

Accepted Answer

A)  heat units
B)  cooling time
C)  heating time
D)  Hounsfield unitsE) None of the above
F) All of the above

Question 3

To take advantage of the anode heel effect,the thicker part of the anatomy being imaged should be placed under the anode end of the tube.

Accepted Answer

A) True 
 B)False

Question 4

The _______________ is used to calculate the length of time needed between exposures so that the tube's heat loading capacity is not exceeded.

Accepted Answer

A)  tube rating chart
B)  exposure factor chart
C)  cooling chart
D)  heating chartE) All of the above
F) B) and C) C

Question 5

By regulation,x-ray tube leakage radiation can be no more than

Accepted Answer

A)  100 R per hour at a distance of one meter
B)  100 R per minute at a distance of one meter
C)  100 mR per hour at a distance of one meter
D)  100 mR per minute at a distance of one meterE) C) and D)
F) B) and D)

Question 6

Excessive heat may be transferred to the rotor bearings,resulting in

Accepted Answer

A)  the anode rotating faster than it should
B)  the anode rotating slower than it should
C)  the anode rotating unevenly
D)  all of the aboveE) None of the above
F) All of the above

Question 7

Glass enclosures are typically made of borosilicate glass (Pyrex) because

Accepted Answer

A)  it is an inexpensive material
B)  it is an expensive material
C)  it is very heat-resistant
D)  none of the aboveE) A) and B)
F) B) and D)

Question 8

The rotor is found

Accepted Answer

A)  near the tube window
B)  outside the envelope
C)  inside the envelope
D)  towards the cathode end of the tubeE) None of the above
F) B) and D) C

Question 9

If the anode angle becomes too small,which of the following may result?

Accepted Answer

A)  X-ray beam size may start to be limited.
B)  The intensity of the beam near the anode may be reduced.
C)  The anode heel effect may be seen.
D)  All of the above.E) A) and C)
F) All of the above D

Question 10

To take advantage of the anode heel effect,the thinner part of the anatomy being imaged should be placed under the cathode end of the tube.

Accepted Answer

A) True 
 B)False

Question 11

The induction motor turns the rotor of a specialty x-ray tube ___________ revolutions per minute.

Accepted Answer

A)  1400
B)  3400
C)  6000
D)  10,000E) A) and B)
F) A) and C)

Question 12

The physical area of the target where electrons strike is the effective focal spot.

Accepted Answer

A) True 
 B)False

Question 13

The cathode

Accepted Answer

A)  includes a focusing cup
B)  provides electrons for x-ray production
C)  includes filaments
D)  all of the aboveE) A) and D)
F) B) and C)

Question 14

Which of the following occurs first during x-ray production?

Accepted Answer

A)  Thermionic emission.
B)  Voltage is transformed to kilovoltage.
C)  Current passes through the rheostat.
D)  Kilovoltage is applied to anode and cathode.E) B) and D)
F) A) and C)

Question 15

The focusing cup is made of

Accepted Answer

A)  tungsten
B)  nickel
C)  thorium
D)  molybdenumE) A) and C)
F) All of the above

Question 16

Tungsten is used to coat the anode disc because it

Accepted Answer

A)  has a low melting point
B)  has a low atomic number
C)  has a high atomic number
D)  does not conduct heat wellE) All of the above
F) A) and B)

Question 17

"Sun-tanning" in glass envelopes is caused by

Accepted Answer

A)  the color the tube gets as it loses its resistance to heat over time
B)  oil leaking out of the protective housing
C)  the breaking of the glass envelope into small pieces of glass
D)  the vaporized tungsten from filament deposits that coats the inside of the glassE) All of the above
F) A) and B)

Question 18

Tungsten is used to coat the anode disc because it

Accepted Answer

A)  has a high melting point
B)  has a low melting point
C)  has a low atomic number
D)  does not conduct heat wellE) A) and B)
F) A) and C)

Question 19

Which of the following helps to keep the x-ray tube cool on the inside of the protective housing?

Accepted Answer

A)  Cooling fans.
B)  Oil bath.
C)  Target window.
D)  A and B.
E)  B and C.F) A) and C)
G) B) and D)

Question 20

The filament is primarily made of

Accepted Answer

A)  rhenium
B)  copper
C)  molybdenum
D)  tungstenE) A) and D)
F) A) and B)

Exam 5: The X-Ray Tube

The protective tube housing is lined with

Correct AnswerverifiedShow Answer

The formula kVp × mA × s × c is used to calculate

Correct AnswerverifiedShow Answer

To take advantage of the anode heel effect,the thicker part of the anatomy being imaged should be placed under the anode end of the tube.

Correct AnswerverifiedShow Answer

The _______________ is used to calculate the length of time needed between exposures so that the tube's heat loading capacity is not exceeded.

Correct AnswerverifiedC

By regulation,x-ray tube leakage radiation can be no more than

Correct AnswerverifiedShow Answer

Excessive heat may be transferred to the rotor bearings,resulting in

Correct AnswerverifiedShow Answer

Glass enclosures are typically made of borosilicate glass (Pyrex) because

Correct AnswerverifiedShow Answer

The rotor is found

Correct AnswerverifiedC

If the anode angle becomes too small,which of the following may result?

Correct AnswerverifiedD

To take advantage of the anode heel effect,the thinner part of the anatomy being imaged should be placed under the cathode end of the tube.

Correct AnswerverifiedShow Answer

The induction motor turns the rotor of a specialty x-ray tube ___________ revolutions per minute.

Correct AnswerverifiedShow Answer

The physical area of the target where electrons strike is the effective focal spot.

Correct AnswerverifiedShow Answer

The cathode

Correct AnswerverifiedShow Answer

Which of the following occurs first during x-ray production?

Correct AnswerverifiedShow Answer

The focusing cup is made of

Correct AnswerverifiedShow Answer

Tungsten is used to coat the anode disc because it

Correct AnswerverifiedShow Answer

"Sun-tanning" in glass envelopes is caused by

Correct AnswerverifiedShow Answer

Tungsten is used to coat the anode disc because it

Correct AnswerverifiedShow Answer

Which of the following helps to keep the x-ray tube cool on the inside of the protective housing?

Correct AnswerverifiedShow Answer

The filament is primarily made of

Correct AnswerverifiedShow Answer

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C

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C

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D

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