Extra class question pool

In the US, the Federal Communications Commission (FCC) offers three Amateur Radio license levels or license classes; Technician class license, General class license and Extra class license. Per FCC Rule 97.523 only one question pool may exist for each license examination level. Each question pool must contain at least 10 times the number of questions required for a single examination. The question pools are normally valid for 4 years.

With only three license classes, earning a license has never been easier!

E0A01 (B)

What is the primary function of an external earth connection or ground rod?

A. Reduce received noise
B. Lightning protection
C. Reduce RF current flow between pieces of equipment
D. Reduce RFI to telephones and home entertainment systems

E0A02 (B)

When evaluating RF exposure levels from your station at a neighbor's home, what must you do?

A. Ensure signals from your station are less than the controlled Maximum Permitted Exposure (MPE) limits
B. Ensure signals from your station are less than the uncontrolled Maximum Permitted Exposure (MPE) limits
C. Ensure signals from your station are less than the controlled Maximum Permitted Emission (MPE) limits
D. Ensure signals from your station are less than the uncontrolled Maximum Permitted Emission (MPE) limits

E0A03 (C)

Over what range of frequencies are the FCC human body RF exposure limits most restrictive?

A. 300 kHz to 3 MHz
B. 3 to 30 MHz
C. 30 to 300 MHz
D. 300 to 3000 MHz

E0A04 (C)

When evaluating a site with multiple transmitters operating at the same time, the operators and licensees of which transmitters are responsible for mitigating over-exposure situations?

A. Only the most powerful transmitter
B. Only commercial transmitters
C. Each transmitter that produces 5 percent or more of its MPE limit in areas where the total MPE limit is exceeded.
D. Each transmitter operating with a duty cycle greater than 50 percent

E0A05 (B)

What is one of the potential hazards of operating in the amateur radio microwave bands?

A. Microwaves are ionizing radiation
B. The high gain antennas commonly used can result in high exposure levels
C. Microwaves often travel long distances by ionospheric reflection
D. The extremely high frequency energy can damage the joints of antenna structures

E0A06 (D)

Why are there separate electric (E) and magnetic (H) field MPE limits?

A. The body reacts to electromagnetic radiation from both the E and H fields
B. Ground reflections and scattering make the field strength vary with location
C. E field and H field radiation intensity peaks can occur at different locations
D. All these choices are correct

E0A07 (B)

How may dangerous levels of carbon monoxide from an emergency generator be detected?

A. By the odor
B. Only with a carbon monoxide detector
C. Any ordinary smoke detector can be used
D. By the yellowish appearance of the gas

E0A08 (C)

What does SAR measure?

A. Synthetic Aperture Ratio of the human body
B. Signal Amplification Rating
C. The rate at which RF energy is absorbed by the body
D. The rate of RF energy reflected from stationary terrain

E0A09 (C)

Which insulating material commonly used as a thermal conductor for some types of electronic devices is extremely toxic if broken or crushed and the particles are accidentally inhaled?