1. What are harmonics? which charactensuc Old Souru uu uley ueter
2. What is the basic difference between music and noise? What are regular vibrations?
3. What determines the harmfulness of noise from the point of view of health? Mention two sources
of noise pollution
Answers
Answer:
1. Harmonics are currents or voltages with frequencies that are integer multiples of the fundamental power frequency. If the fundamental power frequency is 60 Hz, then the 2nd harmonic is 120 Hz, the 3rd is 180 Hz, etc
2. Noise is an unpleasant sound . It is created through irregular vibrations . Music is a sound which is pleasant to the ears .
3.What are the main causes of noise pollution?
CAUSES OF NOISE POLLUTION
Traffic noise.
Air traffic noise.
Construction sites.
Catering and night life.
Animals.
Physical.
Psychological.
Sleep and behavioural disorders.
Answer:
Harmonics:
Explanation:
Harmonics is the number of series the term employed in various disciplines,including music,physics,acoustics,electronic power transmission, radiology etc .......