Question 1

The lines of force in space associated with a magnet are called

Accepted Answer

A)   lines of flux
B)   dipoles
C)   domains
D)   lines of field

Question 2

Which of the following is NOT a good electrical conductor?

Accepted Answer

A)   Gold.
B)   Copper.
C)   Glass.
D)   Water.

Question 3

The primary side of the high-voltage transformer is found on the

Accepted Answer

A)   primary circuit
B)   secondary circuit
C)   filament circuit
D)   none of these

Question 4

During a radiographic procedure using AEC, the exposure time will be shorter when the spine covers the ionization chamber, as compared with air covering the chamber.

Accepted Answer

A) True 
 B)False

Question 5

Place the following events leading to the production of x-rays in order, from first to last I. resistance is adjusted at the rheostat
II)  filament is heated
III)  filament current is increased
IV)  electrons are boiled off filament

Accepted Answer

A)   II, IV, III, I
B)   III, II, IV, I
C)   I, III, II, IV
D)   I, IV, III, II

Question 6

When a switch is turned on, the electric circuit

Accepted Answer

A)   is closed
B)   does not allow electrons to flow
C)   is opened
D)   none of these

Question 7

Which of the following does NOT open a circuit to keep the circuit and devices safe?

Accepted Answer

A)   Fuse.
B)   Resistor.
C)   Circuit breaker.

Question 8

The flow of electrons along a conductor is

Accepted Answer

A)   electric current
B)   electric potential
C)   resistance
D)   electrostatics

Question 9

When a conductor has a smaller cross-sectional area:

Accepted Answer

A)   resistance decreases
B)   resistance increases
C)   resistance remains the same
D)   none of these

Question 10

The rectifiers are found on the

Accepted Answer

A)   primary circuit
B)   secondary circuit
C)   filament circuit
D)   none of these

Question 11

Which of the following is NOT a correct law of electrostatics:

Accepted Answer

A)   like charges repel
B)   unlike charges attract
C)   electric charges reside only on the internal surface of conductors
D)   all of these are laws of electrostatics

Question 12

The x-ray tube (not filaments)  is found on the

Accepted Answer

A)   primary circuit
B)   secondary circuit
C)   filament circuit
D)   none of these

Question 13

Three-phase power

Accepted Answer

A)   uses three AC waveforms at the same time
B)   results in three times the ripple
C)   is half-wave rectified

Question 14

A material that is weakly attracted to a magnetic field is

Accepted Answer

A)   nonmagnetic
B)   paramagnetic
C)   ferromagnetic
D)   diamagnetic

Question 15

The selection of the large or small filament in the cathode depends on the choice of focal spot size at the operating console and the

Accepted Answer

A)   exposure time selected
B)   kVp selected
C)   mA station selected
D)   all of these

Question 16

A step-down transformer results in

Accepted Answer

A)   increased current
B)   increased voltage
C)   increased resistance

Question 17

Outside the magnet, the lines of flux travel from

Accepted Answer

A)   north pole to south pole
B)   south pole to north pole
C)   east pole to west pole
D)   west pole to east pole

Question 18

The idea that electricity could be induced in a wire by moving it through a magnetic field was discovered by

Accepted Answer

A)   Faraday
B)   Roentgen
C)   Tesla
D)   Oersted

Question 19

Single-phase full-wave rectified current has

Accepted Answer

A)   10% ripple
B)   25% ripple
C)   50% ripple
D)   100% ripple

Question 20

The study of electric charges in motion is

Accepted Answer

A)   electromagnetism
B)   electrodynamics
C)   electronics
D)   electrostatics

Exam 4: The X-Ray Circuit

Which of the following is NOT a correct law of electrostatics:

Correct AnswerverifiedShow Answer

The selection of the large or small filament in the cathode depends on the choice of focal spot size at the operating console and the

Correct AnswerverifiedShow Answer

The idea that electricity could be induced in a wire by moving it through a magnetic field was discovered by

Correct AnswerverifiedShow Answer

The study of electric charges in motion is

Correct AnswerverifiedShow Answer

Place the following events leading to the production of x-rays in order, from first to last I. resistance is adjusted at the rheostat II) filament is heated III) filament current is increased IV) electrons are boiled off filament

Correct AnswerverifiedShow Answer

A material that is weakly attracted to a magnetic field is

Correct AnswerverifiedShow Answer

The lines of force in space associated with a magnet are called

Correct AnswerverifiedShow Answer

A step-down transformer results in

Correct AnswerverifiedShow Answer

Outside the magnet, the lines of flux travel from

Correct AnswerverifiedShow Answer

The rectifiers are found on the

Correct AnswerverifiedShow Answer

The x-ray tube (not filaments) is found on the

Correct AnswerverifiedShow Answer

Which of the following is NOT a good electrical conductor?

Correct AnswerverifiedShow Answer

When a switch is turned on, the electric circuit

Correct AnswerverifiedShow Answer

Three-phase power

Correct AnswerverifiedShow Answer

The primary side of the high-voltage transformer is found on the

Correct AnswerverifiedShow Answer

When a conductor has a smaller cross-sectional area:

Correct AnswerverifiedShow Answer

During a radiographic procedure using AEC, the exposure time will be shorter when the spine covers the ionization chamber, as compared with air covering the chamber.

Correct AnswerverifiedShow Answer

Which of the following does NOT open a circuit to keep the circuit and devices safe?

Correct AnswerverifiedShow Answer

The flow of electrons along a conductor is

Correct AnswerverifiedShow Answer

Single-phase full-wave rectified current has

Correct AnswerverifiedShow Answer

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