In telecommunication, what does the abbreviation FM denote in radio technology?
Show answer Hide answer
Answer: A. Frequency modulation
Explanation
In telecommunication technology, FM is the standard abbreviation denoting frequency modulation techniques. Frequency modulation encodes information by varying the carrier wave frequency according to the input signal. This modulation method provides superior resistance to amplitude-based static and signal interference. Radio communication relies on modulating carrier waves to transmit audio, video, or digital data. Edwin Armstrong invented wideband frequency modulation in the early twentieth century for broadcasting. FM broadcasting typically operates in the VHF radio frequency band for high-fidelity audio.
Commercial radio stations utilize frequency modulation for high-quality music and voice broadcasting. Wireless communication systems rely heavily on various modulation schemes to transmit data securely. Understanding radio terms is essential for engineers designing modern telecommunication hardware. Frequency meter describes a diagnostic testing device rather than a signal modulation technique. Fiber modulation is not the standard telecommunication term associated with standard radio FM technology. Frequency magnet is a fictitious term with no established meaning in electronics or radio.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
Related questions
Q1. The human skeletal system contains_________________distinct categories of bones?
Show answer Hide answer
Answer: B. 4
Human bones are categorized into four primary morphological groups. These distinct structural classifications include long, short, flat, and irregular bones. Anatomists classify the entire skeletal system using these fou...
Q2. Within a photoelectric cell, optical energy is transformed into?
Show answer Hide answer
Answer: D. electrical energy
Photoelectric cells are electronic devices designed to capture incoming optical energy. They transform this captured light energy directly into usable electrical energy. This conversion relies on the fundamental physics...
Q3. In middle latitudes, which cloud classification possesses the lowest base ________________________ ?
Show answer Hide answer
Answer: B. Stratocumulus
Stratocumulus clouds generally possess a very low cloud base among all mid-level and low classifications. These patchy grey cloud decks typically form at lower altitudes within the lower troposphere layer. Meteorological...
Q4. As a rule, the most destructive seismic waves generated by earthquakes are the __________ ?
Show answer Hide answer
Answer: C. Surface waves
Surface waves travel along the outer crust of the planet. These seismic waves produce rolling ground motions that shake structures violently. Their lower attenuation ensures they cause the most severe destruction. Seismi...
Q5. In the medical condition known as thrombocytopenia, the bone marrow produces?
Show answer Hide answer
Answer: A. Too few platelets
Thrombocytopenia is a medical condition characterized by an abnormally low platelet count. The bone marrow fails to produce sufficient platelets for normal blood clotting. This deficiency places patients at a higher risk...
Q6. Pluto completes one full revolution around the sun in how many days _____?
Show answer Hide answer
Answer: B. 248 years
Pluto has a very large and distant orbit that requires approximately 248 Earth years to complete. The vast distance between Pluto and the Sun results in a remarkably slow orbital revolution speed. Calculating its orbital...