Question 1

For AEC, the ionization chamber is placed between the ____________ and _____________.

Accepted Answer

A)   tube; patient
B)   patient; image receptor
C)   grid; image receptor
D)   image receptor; wallE) A) and D)
F) B) and C)

Question 2

Place the following events leading to the production of x-rays in order, from first to last I. kilovoltage is rectified
II)  voltage is adjusted at the autotransformer
III)  anode and cathode develop large positive and negative charges
IV)  voltage changes to kilovoltage

Accepted Answer

A)   IV, III, II, I
B)   II, IV, I, III
C)   III, I, II, IV
D)   I, III, IV, IIE) A) and D)
F) B) and C)

Question 3

The idea that electricity flowing through a conductor produces a magnetic field was identified by

Accepted Answer

A)   Faraday
B)   Roentgen
C)   Tesla
D)   OerstedE) A) and B)
F) A) and C)

Question 4

Place the following events leading to the production of x-rays in order, from first to last I. electrons are boiled off filament
II)  electricity leaves the autotransformer
III)  electricity goes to primary side of step-down transformer
IV)  filament is heated

Accepted Answer

A)   I, II, III, IV
B)   III, IV, II, I
C)   II, IV, III, I
D)   II, III, IV, IE) All of the above
F) B) and C)

Question 5

Increasing the strength of the magnetic field results in

Accepted Answer

A)   increased electromagnetic induction
B)   reduced electromagnetic induction
C)   no effect on electromagnetic inductionD) A) and C)
E) B) and C)

Question 6

Electrification by induction requires that the two objects

Accepted Answer

A)   are in direct, constant contact with each other
B)   are not at all in contact with each other
C)   contact each other and then separate
D)   are as far apart as possible from each otherE) A) and B)
F) All of the above

Question 7

When a conductor is longer:

Accepted Answer

A)   resistance decreases
B)   resistance increases
C)   resistance remains the same
D)   none of theseE) B) and D)
F) A) and D)

Question 8

Only electrons are free to move in solid conductors.

Accepted Answer

A) True 
 B)False

Question 9

When a negative charge is placed on the p-type crystal and a positive charge on the n-type crystal, the result is

Accepted Answer

A)   current flows through the diode
B)   current does not flow through the diode
C)   voltage decreases
D)   voltage increasesE) B) and D)
F) A) and B)

Question 10

The device that regulates the amount of current flowing in the circuit is the

Accepted Answer

A)   battery
B)   resistor
C)   fuse
D)   transformerE) B) and C)
F) A) and B)

Question 11

mAs is

Accepted Answer

A)   another name for tube current
B)   related to the amount of radiation exposing the patient
C)   the product of mA and exposure time
D)   the product of mA and exposure time, and related to the amount of radiation exposing the patientE) C) and D)
F) A) and B)

Question 12

Closed-core and shell-type transformers

Accepted Answer

A)   are seldom used in x-ray equipment
B)   are less efficient types of transformers
C)   are simpler types of transformers
D)   are more sophisticated and incorporate a ferromagnetic coreE) B) and C)
F) A) and D)

Question 13

An adjustable form of a resistor is the

Accepted Answer

A)   rheostat
B)   capacitor
C)   switch
D)   diodeE) All of the above
F) A) and D)

Question 14

AEC controls the ________________ of radiation reaching the image receptor.

Accepted Answer

A)   type
B)   quantity
C)   energy level
D)   all of theseE) B) and D)
F) None of the above

Question 15

To get electrons to flow along a conductor, there must be

Accepted Answer

A)   an excess of negative charges at one end of the wire
B)   an excess of negative charges at both ends of the wire
C)   an excess of positive charges at one end of the wire, and an excess of negative charges at the other
D)   an excess of positive charges at both ends of the wireE) B) and D)
F) All of the above

Question 16

Reducing the number of coils in the wire will result in

Accepted Answer

A)   increased electromagnetic induction
B)   reduced electromagnetic induction
C)   no effect on electromagnetic inductionD) A) and B)
E) A) and C)

Question 17

With mutual induction, to induce voltage in the secondary coil, there must be

Accepted Answer

A)   a physical connection between the two coils of wire
B)   alternating current in the primary coil of wire
C)   direct current in the primary coil of wireD) A) and B)
E) A) and C)

Question 18

A volt is the potential difference that will maintain a current of _____ ampere in a circuit with a resistance of ______ ohm.

Accepted Answer

A)   1; 2
B)   2; 1
C)   1; 1
D)   2; 2E) A) and C)
F) B) and C)

Question 19

A general purpose radiographic tube typically has ____ filament(s) .

Accepted Answer

A)   one
B)   two
C)   three
D)   fourE) C) and D)
F) A) and B)

Question 20

A transformer with 100 turns on the primary side and 50 turns on the secondary

Accepted Answer

A)   is a step-up transformer
B)   is a step-down transformer
C)   is a transformer that works on self-induction
D)   will have 100 times the current on the secondary sideE) All of the above
F) A) and D)

Exam 4: The X-Ray Circuit

To get electrons to flow along a conductor, there must be

Correct AnswerverifiedShow Answer

When a negative charge is placed on the p-type crystal and a positive charge on the n-type crystal, the result is

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Reducing the number of coils in the wire will result in

Correct AnswerverifiedShow Answer

Only electrons are free to move in solid conductors.

Correct AnswerverifiedShow Answer

A volt is the potential difference that will maintain a current of _____ ampere in a circuit with a resistance of ______ ohm.

Correct AnswerverifiedShow Answer

With mutual induction, to induce voltage in the secondary coil, there must be

Correct AnswerverifiedShow Answer

When a conductor is longer:

Correct AnswerverifiedShow Answer

AEC controls the ________________ of radiation reaching the image receptor.

Correct AnswerverifiedShow Answer

An adjustable form of a resistor is the

Correct AnswerverifiedShow Answer

A general purpose radiographic tube typically has ____ filament(s) .

Correct AnswerverifiedShow Answer

For AEC, the ionization chamber is placed between the ____________ and _____________.

Correct AnswerverifiedShow Answer

The idea that electricity flowing through a conductor produces a magnetic field was identified by

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Place the following events leading to the production of x-rays in order, from first to last I. kilovoltage is rectified II) voltage is adjusted at the autotransformer III) anode and cathode develop large positive and negative charges IV) voltage changes to kilovoltage

Correct AnswerverifiedShow Answer

mAs is

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The device that regulates the amount of current flowing in the circuit is the

Correct AnswerverifiedShow Answer

A transformer with 100 turns on the primary side and 50 turns on the secondary

Correct AnswerverifiedShow Answer

Increasing the strength of the magnetic field results in

Correct AnswerverifiedShow Answer

Place the following events leading to the production of x-rays in order, from first to last I. electrons are boiled off filament II) electricity leaves the autotransformer III) electricity goes to primary side of step-down transformer IV) filament is heated

Correct AnswerverifiedShow Answer

Closed-core and shell-type transformers

Correct AnswerverifiedShow Answer

Electrification by induction requires that the two objects

Correct AnswerverifiedShow Answer

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A volt is the potential difference that will maintain a current of _ ampere in a circuit with a resistance of __ ohm.

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For AEC, the ionization chamber is placed between the and _.

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