RTE 1401 Chapter 5 Questions with Correct
Answers
which of the following reduces leakage radiation to required standards?
protective housing
which component of the x-ray tube is responsible for concentrating the electron cloud?
focusing cup
the x-ray tube is a part of the:
x-ray circuit secondary
A technique of 80kV, 400mA, 0.8 seconds is to be used on a 3 phase, 12 pulse machine.
How many heat units are produced with a single exposure?
36,096
the intensity of the x-ray beam is less:
on the anode side
Causes of tube failure are most often related to which of the following?
thermal characteristics
what metal is added to the filament to increase thermionic emission and extend tube
life?
thorium
a small anode target angle:
results in an increase in anode heel effect
a dual focus tube refers to a tube with:
, two filaments
The purpose of the line focus principle is to create which of the following?
large actual and small effective focal spot size
A technique of 50 kV, 100 mA, 0.1 seconds is to be used on a 3-phase, 6-pulse machine.
How many heat units are produced with a single exposure?
675
what does a protective housing provide?
solid mechanical support
the general purpose x-ray tube is:
an electronic vacuum tube
what does a general purpose x-ray tube consist of:
an anode, a cathode, an induction motor, encased in a glass or metal enclosure
what is the main purpose of the enclosure for the x-ray tube?
to maintain a vacuum within the tube to prevent electrical arcing
what are the two varieties of the enclosure?
the glass envelope and the metal envelope
glass envelope is made of...
Borosilicate glass because it is heat resistant
the metal envelope provides...
a constant electric potential between the electron stream from the cathode and the enclosure
Answers
which of the following reduces leakage radiation to required standards?
protective housing
which component of the x-ray tube is responsible for concentrating the electron cloud?
focusing cup
the x-ray tube is a part of the:
x-ray circuit secondary
A technique of 80kV, 400mA, 0.8 seconds is to be used on a 3 phase, 12 pulse machine.
How many heat units are produced with a single exposure?
36,096
the intensity of the x-ray beam is less:
on the anode side
Causes of tube failure are most often related to which of the following?
thermal characteristics
what metal is added to the filament to increase thermionic emission and extend tube
life?
thorium
a small anode target angle:
results in an increase in anode heel effect
a dual focus tube refers to a tube with:
, two filaments
The purpose of the line focus principle is to create which of the following?
large actual and small effective focal spot size
A technique of 50 kV, 100 mA, 0.1 seconds is to be used on a 3-phase, 6-pulse machine.
How many heat units are produced with a single exposure?
675
what does a protective housing provide?
solid mechanical support
the general purpose x-ray tube is:
an electronic vacuum tube
what does a general purpose x-ray tube consist of:
an anode, a cathode, an induction motor, encased in a glass or metal enclosure
what is the main purpose of the enclosure for the x-ray tube?
to maintain a vacuum within the tube to prevent electrical arcing
what are the two varieties of the enclosure?
the glass envelope and the metal envelope
glass envelope is made of...
Borosilicate glass because it is heat resistant
the metal envelope provides...
a constant electric potential between the electron stream from the cathode and the enclosure
