Question 1

The filaments are connected to the

Accepted Answer

A)   filament circuit
B)   primary circuit
C)   secondary circuit
D)   none of theseE) A) and B)
F) B) and C)

Question 2

Of all the energy involved in x-ray production, 99% is converted to

Accepted Answer

A)   x-rays
B)   electrons
C)   heat
D)   none of theseE) All of the above
F) A) and D)

Question 3

The area of the envelope where x-rays should exit the tube is the

Accepted Answer

A)   target door
B)   target window
C)   x-ray trap
D)   x-ray gateE) B) and C)
F) B) and D)

Question 4

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 C)
F) All of the above

Question 5

The focusing cup is part of the

Accepted Answer

A)   filament circuit
B)   primary circuit
C)   secondary circuit
D)   none of theseE) B) and D)
F) A) and B)

Question 6

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) A) and D)
F) B) and C)

Question 7

The advantage to using a larger actual focal spot is

Accepted Answer

A)   the image is sharper
B)   there is less wear and tear on the tube
C)   the image is less sharp
D)   higher exposures can be usedE) None of the above
F) A) and C)

Question 8

The melting point of tungsten is

Accepted Answer

A)   400 °C
B)   1400 °C
C)   2400 °C
D)   3400 °CE) A) and D)
F) C) and D)

Question 9

Electrons from the cathode that do not produce x-rays will

Accepted Answer

A)   be absorbed in the envelope
B)   return to the cathode filament
C)   be absorbed in the air in the tube
D)   continue as current flow through the circuitE) C) and D)
F) B) and C)

Question 10

The smaller the anode angle, the _________ the effective focal spot.

Accepted Answer

A)   smaller
B)   larger
C)   wider
D)   longerE) A) and C)
F) C) and D)

Question 11

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) B) and D)
F) C) and D)

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Heat from x-ray production is removed through radiation by the heat traveling from

Accepted Answer

A)   the tube into the room by cooling fans
B)   the tube to heat-tolerant materials
C)   the tube to the oil bath in the protective housing
D)   none of theseE) A) and B)
F) A) and C)

Question 14

The cathode includes the

Accepted Answer

A)   envelope
B)   filaments
C)   focusing cup
D)   filaments and the focusing cupE) None of the above
F) B) and C)

Question 15

The advantage to using a small effective focal spot is

Accepted Answer

A)   the image is sharper
B)   the image is less sharp
C)   less exposure can be used
D)   it is safer for the patientE) B) and C)
F) All of the above

Question 16

The electrons in the tube current travel

Accepted Answer

A)   at the speed of light
B)   approximately half the speed of light
C)   approximately one-fourth the speed of light
D)   none of theseE) A) and B)
F) A) and D)

Question 17

Copper can be found __________________ of the rotating anode.

Accepted Answer

A)   in the shaft
B)   in the target area
C)   surrounding the tungsten
D)   in the baseE) A) and B)
F) None of the above

Question 18

The stationary anode includes an area of ___________ embedded in a copper rod.

Accepted Answer

A)   copper
B)   molybdenum
C)   tungsten
D)   glassE) A) and C)
F) A) and B)

Question 19

The stator is made up of electromagnets.

Accepted Answer

A) True 
 B)False

Question 20

How many heat units are produced with an exposure using a single phase x-ray unit, 75 kVp, and 50 mAs?

Accepted Answer

A)   3,750 HU.
B)   5,063 HU.
C)   5,288 HU.
D)   5,438 HU.E) A) and B)
F) A) and C)

Exam 5: The X-Ray Tube

The rotor is found

Correct AnswerverifiedShow Answer

The area of the envelope where x-rays should exit the tube is the

Correct AnswerverifiedShow Answer

Electrons from the cathode that do not produce x-rays will

Correct AnswerverifiedShow Answer

The electrons in the tube current travel

Correct AnswerverifiedShow Answer

The filaments are connected to the

Correct AnswerverifiedShow Answer

The cathode includes the

Correct AnswerverifiedShow Answer

How many heat units are produced with an exposure using a single phase x-ray unit, 75 kVp, and 50 mAs?

Correct AnswerverifiedShow Answer

The melting point of tungsten is

Correct AnswerverifiedShow Answer

The stationary anode includes an area of ___________ embedded in a copper rod.

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Tungsten is used to coat the anode disc because it

Correct AnswerverifiedShow Answer

The stator is made up of electromagnets.

Correct AnswerverifiedShow Answer

Of all the energy involved in x-ray production, 99% is converted to

Correct AnswerverifiedShow Answer

The focusing cup is part of the

Correct AnswerverifiedShow Answer

Copper can be found __________________ of the rotating anode.

Correct AnswerverifiedShow Answer

The advantage to using a small effective focal spot is

Correct AnswerverifiedShow Answer

The smaller the anode angle, the _________ the effective focal spot.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The advantage to using a larger actual focal spot is

Correct AnswerverifiedShow Answer

Heat from x-ray production is removed through radiation by the heat traveling from

Correct AnswerverifiedShow Answer

Tungsten is used to coat the anode disc because it

Correct AnswerverifiedShow Answer

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