4b051 Bioenvironmental Engineering Journeyman CDC Ure Questions Vol. 4
- 1.Which of the following provides regulatory oversight for the use of radioactive materials by Air Force organizations?
- A.
AF RIC.
- B.
RSC.
- C.
USAF/SG.
- D.
EPA.
- 2.Who is the unit commander’s point of contact for radiation protection matters?
- A.
Unit radiation safety officer
- B.
Command radiation safety officer.
- C.
Installation radiation safety officer.
- D.
Unit radiation safety committee officer.
- 3.The more kinetic energy the electrons have, the
- A.
Closer they are to each other.
- B.
Closer they are to the nucleus.
- C.
Farther they are from each other.
- D.
Farther they are from the nucleus.
- 4.What form of energy does a rock rolling down a hill contain?
- A.
Kinetic.
- B.
Velocity.
- C.
Potential.
- D.
Centrifugal.
- 5.The magnetic field is also known as the
- A.
E field.
- B.
H field.
- C.
K field.
- D.
M field.
- 6.The number of electromagnetic waves passing a certain point in one second is known as
- A.
Energy.
- B.
Intensity.
- C.
Frequency.
- D.
Wavelength.
- 7.As the frequency becomes higher, wavelength becomes
- A.
Slower.
- B.
Longer.
- C.
Faster.
- D.
Shorter.
- 8.The amount of energy flowing through a given area in a certain amount of time refers to what measure of electromagnetic radiation?
- A.
Activity.
- B.
Frequency.
- C.
Intensity.
- D.
Wavelength.
- 9.A tanning booth is a good example of which type of radiation?
- A.
Gamma.
- B.
Visible.
- C.
Infrared.
- D.
Ultraviolet.
- 10.This type of radiation is commonly emitted by furnaces and molten metals.
- A.
Gamma.
- B.
Visible.
- C.
Infrared.
- D.
Ultraviolet.
- 11.Which radiation has the ability to separate orbital electrons from their nuclei creating an ion?
- A.
Visible.
- B.
Ionizing.
- C.
Ultraviolet.
- D.
Nonionizing.
- 12.Which component amplifies the RFR signal?
- A.
Receiver.
- B.
Modulator.
- C.
Transmitter
- D.
Transmission line.
- 13.Which component transfers RFR energy to the antenna?
- A.
Receiver.
- B.
Modulator.
- C.
Transmitter.
- D.
Transmission line.
- 14.If the wavelength of a RFR emission is 20 cm, a waveguide designed for it must have one dimension that is at least
- A.
5 cm.
- B.
10 cm.
- C.
20 cm.
- D.
40 cm.
- 15.What is an example of a RFR emitter the USAF uses for its mission?
- A.
Cathode.
- B.
Scanner.
- C.
Laser pointer.
- D.
Electronic countermeasures.
- 16.Which RFR health effect is the biological effect not associated with thermal absorption?
- A.
Indirect.
- B.
Thermal.
- C.
Athermal.
- D.
Resonance.
- 17.Which RFR emitter should be the highest priority during the evaluation phase?
- A.
Ground-level hazard.
- B.
Climbing hazard.
- C.
Short duration.
- D.
Inaccessible.
- 18.Which RFR emitter should be the second priority during the evaluation phase?
- A.
Inaccessible.
- B.
Short duration.
- C.
Climbing hazard.
- D.
Ground-level hazard.
- 19.When evaluating these RFR emitters, their repair and maintenance shops should be a higher priority than routine operations.
- A.
Inaccessible.
- B.
Short duration.
- C.
Climbing hazard.
- D.
Ground-level hazard.
- 20.Which risk rating indicates the transmission time is too short to exceed the average power density allowed for that frequency?
- A.
Low.
- B.
High.
- C.
Moderate.
- D.
Acceptable.
- 21.If you need the RFR PEL for radiation workers that have been trained and understand the hazards of exposure, you should look in the table for which environment?
- A.
Uncontrolled.
- B.
Unshielded.
- C.
Controlled.
- D.
Shielded.
- 22.Which RFR environment would describe the exposure for customers at a golf course near an emitter?
- A.
Shielded.
- B.
Controlled.
- C.
Unshielded.
- D.
Uncontrolled.
- 23.Which kind of system is described with the information below? Frequency: 150 MHz PW: 1.2 microseconds PRF: 320 pps Antenna gain: 52 dB Antenna type: Aperature
- A.
Laser.
- B.
Pulsed wave.
- C.
Ionizing source.
- D.
Continuous wave.
- 24.What step must you take after obtaining RFR meter readings in order to find the real power density?
- A.
Compensate for temperature.
- B.
Multiply by the correction factor.
- C.
Account for the calibration curve.
- D.
Calculate the time-weighted average.
- 25.When performing RFR measurements, always start
- A.
Farther away from the antenna than the calculated distance.
- B.
The same area around the antenna as the calculated distance.
- C.
Twice the calculated distance away from the antenna.
- D.
Closer to the antenna than the calculated distance.
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