Interview Questions.

Question 1. What Is Sound ?

Answer :

A sensation produced in the brain by way of the movement at the eardrum of air borne or different vibration. Sources of sound consist normally vibrations of strings, membranes of air columns.

Question 2. How Is Sound Produced ?

Answer :

Sound is produced via the vibrations of fabric gadgets.

Physics Interview Questions
Question 3. What Is The Velocity Of Sound Air ?

Answer :

300 / ms 

Question four. In Which Medium The Velocity Of Sound Is Large ?

Answer :

Steel

Question five. What Is The Wavelength Of Sound In Air ?

Answer :

10cm

Audiologist Interview Questions
Question 6. What Is Frequency Of Sound In Air ?

Answer :

3.Three kc/s

Question 7. When Sound Waves Travel From Air To Water, What Happens To Its Frequency ?

Answer :

It stays steady.

Dimensions Interview Questions
Question 8. The Velocity Of Sound In Gas Depends Upon What ?

Answer :

Density and elasticity of fuel.

Question 9. Which Property Of Sound Is Affected By Change In Air Temperature ?

Answer :

Wavelength.

Machine Dynamics Interview Questions
Question 10. What Are The Essential Characteristics Of A Wave ?

Answer :

Wave length, amplitude, freequency and velocity

Question eleven. How Many Types Of Wave Motions Are There ?

Answer :

Two kinds:

 Transverse waves
 Longitudinal waves
Gravitational Interview Questions
Question 12. What Is The Formula Of Velocity ?

Answer :

Velocity is equal to frequency * wavelength.

Physics Interview Questions
Question 13. Give An Example Of Transverse Wave?

Answer :

Light wave.

Question 14. How Echo Is Produced ?

Answer :

It is produced by means of reflection of sound.

Question 15. When The Sound Intensity Is Above 120 Decibel, What Happen To Human Ears ?

Answer :

Very painful to withstand.

Question sixteen. What Is Ultrasonic Sound ?

Answer :

It is sound of frequeny more than 20 KHz ( 20,000 cycles / sec ) .

Question 17. What Is Frequncy ?

Answer :

The range of vibrations made by a frame in a single 2nd is called its frequency.

Question 18. What Is Audio Frequency ?

Answer :

Audio frequency is the frequency of audio sounds. 

Audiologist Interview Questions
Question 19. What Is Supersonic ?

Answer :

It is speed of an item shifting with a speed greater than that of sound.

Question 20. What Is Speed Of Sound At Sea Level ?

Answer :

340.29 m / s.

Question 21. Which Waves Are Used In Sonography ?

Answer :

Ultra sonic

Question 22. Who First Described How Shock Waves Are Formed ?

Answer :

Ernest Mach.

Question 23. Which Is The Sound Wave That Is Below The Human Hearing ?

Answer :

Infrasonic. 

Question 24. What Is Amplitude ?

Answer :

It is the assets of a wave on which its depth depends.

Dimensions Interview Questions
Question 25. What Is Speed Of Sound Through Water ?

Answer :

1500 miles per 2d.

Question 26. What Happens To The Velocity Of Sound With The Rise Of Temperature ?

Answer :

Increases

Question 27. What Generates Seismic Waves ?

Answer :

Earth quake and explosions.

Machine Dynamics Interview Questions
Question 28. Which Animals Communicate On Under Water Sounds ?

Answer :

Whales and dolphins. 

Question 29. What Sound Waves Travel From Air To Water The Frequency Remains?

Answer :

Constant

Question 30. Who First Detected Radio Waves ?

Answer :

German physicist Heinrich Hertz; the unit of frequency of light waves is called after him.

Question 31. What Is “ Anti - Noise ” ?

Answer :

When  sounds overlap, they cancel out each different. This technique is referred to as anti noise.

Question 32. What Is Transverse Wave Motion ?

Answer :

A wave movement wherein the individual debris of the medium vibrate in a course at proper angles to the route of wave propagation, is called a transverse wave motion.

Question 33. How Does A Sound Wave Travel In Air ?

Answer :

Propagation of sound waves in air is an example of longitudinal wave movement. When a legitimate pulse travel in air it reasons nearby modifications in stress and density of air which might be referred to as condensations and rarefactions.

Gravitational Interview Questions
Question 34. For Which Type Of Waves Is The Principle Of Superposition Valid ?

Answer :

It is valid for each the sorts, i.E, for longitudinal waves as well as for transverse waves.

Question 35. What Is Sonar ?

Answer :

It is a way of producing sound waves of very high frequency as a method of defecting invisible submarine items.

Question 36. What Is Constructive Interfernce ?

Answer :

When a compression because of one wave falls on compression of the opposite or rarefaction of one wave falls on rarefaction of different, the consequent displacement is maximum. This is called optimistic interference.

Question 37. What Is Meant By Refraction Of A Wave ?

Answer :

If the boundary isn't completely inflexible or is an interface between  one-of-a-kind elastic media then part of the incident wave is contemplated and a part is transmittted into the second medium. If a wave pulse is incident obliquely at the boundary among two different media the transmitted wave is referred to as the refracted wave.

Question 38. What Is Periodic Wave ?

Answer :

A periodic wave is one wherein the particles, of the medium vibrate periodically while propagating the distrubance.

Question 39. What Is Meant By Reflection Of Waves ?

Answer :

Whenever a wave traveling in a medium is obstructed by a difficult floor, it is bounded back into the same medium. The phenomenon is known as mirrored image of wave.

Question 40. What Is The Principle On Which Sitar And Violin Are Based ?

Answer :

According to the principle of superposition a stretched string tied at each ends can vibrate concurrently in a couple of mode. Which mode is strongly excited relies upon on where the string is plucked or bowed. Musical instruments just like the sitar and the violin are designed on this precept.

Question forty one. What Is Doppler Effect ?

Answer :

If there may be arelative motion among a supply of sound and the observer, the plain pitch appears to be distinctive than the true frequency of the supply of sound. This is known as doppler impact.

Question 42. What Is The Musical Sound ?

Answer :

Musical sound is produced by way of periodic vibrations. The wave functions of musical sounds are periodic functions. Therefore musical sounds can be decomposed into harmonic components.

Question 43. What Is Noise ?

Answer :

A noise is produced by way of non - periodic vibrations. Their wave capabilities are non periodic and have no exact regularities. The wave features can not be decomposed into harmonic additives.

Question 44. What Are The Characteristics Of A Musical Sound ?

Answer :

The three traits are:

 Loundness
 Pitch
 Quantity
Question 45. What Is The Loudness ?

Answer :

It depends upon the amplitude of the sound wave. The extra is the amplitude, the more is the loudness of the sound. Loudness is measured in phrases of the energycarried through sound waves.

Question forty six. What Is The Pitch ?

Answer :

It is quantity with the help of which we will distinguish two sound of same loudness but having exclusive frequencies. The pitch of the sound is decided with the aid of the frequency of the vibrating which produces sound.

Question 47. What Is The Quantity ?

Answer :

The property which allows the ear to distinguish among  sounds ( having same pitch and loudness ) from two distinct contraptions is known as first-rate.

Question forty eight. What Is The Principle Of Superposition ?

Answer :

This states that the resultant displacement at any point is the sum of the separate displacements due to the 2 waves of sound. 

Question 49. What Is Meant By Normal Modes ?

Answer :

Because of the boundary situations a vibrating gadget can oscillate only in some special styles which might be called the ordinary modes.

Question 50. For What The Parabolic Dishes Are Used ?

Answer :

They are used to gather and listen sound. They made it possible to record low stage sounds including fowl’s track.

Question 51. Who Did First Record The Sound ?

Answer :

Thomas Alva Edison in 1877

Question fifty two. What Is A Synthesizer ?

Answer :

A synthesizer is a musical device used to make sounds electronically.

Question 53. What Is Acoustics ?

Answer :

Refers tot he look at of the manufacturing and properties of sounds. It is also used to explain the manner in which sound identification reproduced in practical situtaions. 

Question fifty four. What Is Channel ?

Answer :

In conversation a designated band of frequencies, or a particular course, used within the transmission and reception of electric signals.

Question fifty five. What Is Loudness Of Sound ?

Answer :

The sensation produced by a supply of sound to a listener. It relies upon on the intensity of sound for a given frequency. It additionally relies upon at the frequency of the sound.

Question 56. What Is Master Oscillator ?

Answer :

An oscillator having excessive inherent frequency stability, used to set up the provider frequency in radio transmission. 

Question 57. What Is Melody ?

Answer :

The pleasing effect on the ear produced while  notes that produce harmony are sounded one after the opposite.

Question fifty eight. What Is Modulation ?

Answer :

The procedure of superposition audio or video signal right into a radio frequency provider wave such that the audio or video signal travels at the rate of the provider wave. 

The siganl may be superposed both by modulating the amplitude or frequency of the service wave.

Question 59. What Is Reverberation ?

Answer :

This refers to endurance of sound even after the supply isn't always emitting any sound.

Question 60. What Is Sonar ( Sound Navigation And Ranging ) ?

Answer :

A technique of locating underwater items via transmitting a excessive frequency sound pulse and detecting or receiving it after it's miles meditated from item. The method can be used to determine the depth of water at a vicinity. The apparatus used is known as echo sounder.

Question sixty one. What Is Sound Velocity ?

Answer :

The pace with which sound waves tour in a medium. In air, its fee is 332 m /s at 0 0 C and will increase with temperature. It is dependent of stress. Its value is more in liquids and maximum in solids. 

Question sixty two. What Is Tone Control ?

Answer :

Device for adjusting the frequency response of an audio frequency amplifier that allows you to atone for deficiencies inside the audible output and therfore obtain a extra beautiful unit.