4b051 Bioenvironmental Engineering Journeyman CDC Ure Questions Vol. 4

88 Questions | By Mav_2591 | Last updated: Mar 21, 2022 | Total Attempts: 716

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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.