DANB RHS Test Questions with 100% Correct
Answers
what is the primary purpose of dental xrays?
A. Detecting caries, bone loss, and pathology
B. whitening teeth
C. identifying calculus
D. measuring pulp vitality
Answer is A
Which part of the xray tube produces xrays?
A. Cathode
B. Anode
C. Glass envelope
D. Lead housing
Answer is B
what is the function of the collimator
A. Restrict the size of the xray beam
B. increase the radiation
C. Absorb the scatter radiation
D. lead housing
Answer is A
The step down transformer in an xray machine is used to:
A. Reduce voltage to the filament
B. increase the penetrating power
,C. stabilize the image receptor
D. cool the anode
Answer is A
The unit used to measure the dose absorbed by tissues is:
A. hertz (hz)
B. gray (gy)
C. volt (v)
D. joule (j)
Answer is B
The cathode is responsible for producing:
A. X-ray photons
B. electrons
C. light
D. collimated beans
Answer is B
The anode in the x-ray tube is made of:
A. tungsten
B. aluminum
C. lead
D. copper
Answer is A
What controls the number of x-rays produced?
A. milliamperage (mA)
, B. kilovoltage (kVp)
C. time setting
D. pid length
Answer is A
Increasing the kVp results in:
A. higher in energy and more penetrating x-rays
B. lower contrast images
C. lighter images
D. Both A and B
Answer is D
What is the purpose of filtration in the xray tube head?
A. Remove long, low energy wavelengths
B. Focus the beam
C. Collimate the beam
D. Cool the anode
Answer is A
what is the maximum permissible dose (MPD) for occupational exposure?
A. 50 mSv per year
B. 5 mSv per year
C. 500 mSv per year
D. 0 mSv per year
Answer is A (50 mSv = 5 rem)
Answers
what is the primary purpose of dental xrays?
A. Detecting caries, bone loss, and pathology
B. whitening teeth
C. identifying calculus
D. measuring pulp vitality
Answer is A
Which part of the xray tube produces xrays?
A. Cathode
B. Anode
C. Glass envelope
D. Lead housing
Answer is B
what is the function of the collimator
A. Restrict the size of the xray beam
B. increase the radiation
C. Absorb the scatter radiation
D. lead housing
Answer is A
The step down transformer in an xray machine is used to:
A. Reduce voltage to the filament
B. increase the penetrating power
,C. stabilize the image receptor
D. cool the anode
Answer is A
The unit used to measure the dose absorbed by tissues is:
A. hertz (hz)
B. gray (gy)
C. volt (v)
D. joule (j)
Answer is B
The cathode is responsible for producing:
A. X-ray photons
B. electrons
C. light
D. collimated beans
Answer is B
The anode in the x-ray tube is made of:
A. tungsten
B. aluminum
C. lead
D. copper
Answer is A
What controls the number of x-rays produced?
A. milliamperage (mA)
, B. kilovoltage (kVp)
C. time setting
D. pid length
Answer is A
Increasing the kVp results in:
A. higher in energy and more penetrating x-rays
B. lower contrast images
C. lighter images
D. Both A and B
Answer is D
What is the purpose of filtration in the xray tube head?
A. Remove long, low energy wavelengths
B. Focus the beam
C. Collimate the beam
D. Cool the anode
Answer is A
what is the maximum permissible dose (MPD) for occupational exposure?
A. 50 mSv per year
B. 5 mSv per year
C. 500 mSv per year
D. 0 mSv per year
Answer is A (50 mSv = 5 rem)
