Description : In acoustics, _____ is the apparent change in frequency or pitch when a sound source moves either toward or away from a listener. A. flanking B. reverberation C. Doppler effect D. echo
Last Answer : C. Doppler effect
Description : What do you call the perceptible sound repetition? A. Reverberation B. Echo C. Reflection D. Masking
Last Answer : B. Echo
Description : The sound which continues even after its source is cut off, is called (A) Reverberation (B) Echo (C) Intensity of sound (D) Interferenc
Last Answer : Answer: Option A
Description : _______ is the transmission of sound from one room to an adjacent room thru common walls, floors or ceilings. A. Reverberation B. Refraction C. Flanking transmission D. Reflection
Last Answer : C. Flanking transmission
Description : A low frequency audible periodic variation in pitch of sound output in high fidelity sound reproduction system? A. Flutter B. Wow C. String vibration D. Radio sound
Last Answer : B. Wow
Description : The reverberation time of a 184.2 cubic meters broadcast studio is 0.84 sec. Find the absorption effect of the materials used in metric sabines. A. 35.3 B. 10.96 C. 379.8 D. 109.6
Last Answer : A. 35.3
Description : Calculate the reverberation time of a living room 8 ft high, 13 ft wide and 20 ft long. The total absorption of the building structure inside the room is 180.7 sabines with four persons present in the room. A. 0.5 ms B. 0.05 s C. 0.5 s D. 5 ms
Last Answer : C. 0.5 s
Description : What is the optimum reverberation time at 500 Hz for a cinema? A. 0.8 – 1.2 sec. B. 0.9 – 1.3 sec. C. 0.6 – 0.8 sec. D. 0.45 – 0.55 sec.
Last Answer : A. 0.8 – 1.2 sec.
Description : What is the optimum reverberation time at 500 to 1000 Hz of an auditorium? A. 0.9 to 1.1 s B. 1.4 to 1.6 s C. 1.5 to 1.6 s D. 1.6 to 1.8 s
Last Answer : D. 1.6 to 1.8 s
Description : The first intelsat satellite that was launched in 1965 was named A. Early Bird I B. Echo C. Telstar I D. Courier
Last Answer : A. Early Bird I
Description : Which of the following is the first active satellite? A. Echo I B. Telstar I C. Early Bird D. Sputnik I
Last Answer : D. Sputnik I
Description : An early satellite owned by US Department of Defense that lasted only for 17 days A. Courier B. Echo C. Score D. Westar 1
Last Answer : A. Courier
Description : What height of an ionized layer is determined from the time interval between the transmitted signal and the ionospheric echo at vertical incidence? A. Virtual height B. Apparent height C. Actual height D. Effective height
Last Answer : A. Virtual height
Description : Which of the following refers to the first active satellite? A. Telstar I B. Echo I C. Intelsat I D. Sputnik I
Description : Pick up the correct statement from the following: (A) Plastics have generally low melting point (B) The coefficient of thermal expansion of plastics is about three times than that of steel (C) ... fibre-glass with phenolic resins has absorption coefficient of about 0.67 (D) All the above
Last Answer : Answer: Option D
Description : Refraction is the a. Bending of light waves b. Reflection of light waves c. Distortion of light waves d. Diffusion of light waves
Last Answer : a. Bending of light waves
Description : _________ is the random and unpredictable electric signals from natural causes, both internal and external to the system. A. Interference B. Attenuation C. Distortion D. Noise
Last Answer : D. Noise
Description : What distortion is not caused by transmission line characteristics? A. Phase distortion B. Pulse shape distortion C. Spacing bias distortion D. Amplitude distortion
Last Answer : C. Spacing bias distortion
Description : This is referred to a product of simultaneous frequency and amplitude modulation or a carrier frequency variation which produces unwanted distortion. A. Absorption modulation B. Simultaneous modulation C. Dynamic instability D. Series modulation
Last Answer : C. Dynamic instability
Description : Which of the following term best described the overload distortion? A. Peak limiting B. Quantization noise C. Granular noise D. Slope distortion
Last Answer : A. Peak limiting
Description : What is the mixing process? A. Distortion caused by auroral propagation B. The combination of two signals to produce sum and difference frequencies. C. The elimination of noise in wideband receiver by phase differentiation D. The elimination of noise in a wideband receiver by phase comparison
Last Answer : B. The combination of two signals to produce sum and difference frequencies.
Description : What is the reason why companding is employed in PCM systems? A. To overcome impulse noise in PCM receivers B. To allow amplitude limiting in the receivers C. To solve quantizing noise problem D. To protect small signals in PCM from quantizing distortion
Last Answer : D. To protect small signals in PCM from quantizing distortion
Description : The random and unpredictable electric signal from natural causes, both internal and external to the system is know as ________. A. Distortion B. Noise C. Attenuation D. Interference
Last Answer : B. Noise
Description : What is reverberation ?
Last Answer : Guitars , violins , harmoniums , etc., in a house, suddenly stop playing after playing together, but for some time the feeling of playing is active in the human mind and gradually it is exhausted ... is the process of maintaining the effect for some time after the sound source is closed.
Description : Echo sounding is the technique applied to— (1) measure the depth of the sea (2) measure the amplitude of sound waves (3) record earthquake waves (4) record the density of air in the atmosphere
Last Answer : (1) measure the depth of the sea Explanation: Echo sounding is the technique of using sound pulses to find the depth of water. The interval from the emission of a pulse to reception ... information is then typically used for navigation purposes or in order to obtain depths for charting purposes.
Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location
Last Answer : (4) Echo location Explanation: Echolocation, also called biosonar, is the biological sonar used by several kinds of animals. Echolocating animals emit calls out to the environment and ... swiftlets in the genus Aerodramus (formerly Collocalia) and the unrelated Of bird Steatornis caripensis.
Description : Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarization
Last Answer : (1) Reflection Explanation: Reflection of sound waves off of surfaces lead to one of two phenomena - an echo or a reverberation. The echo is produced due to hitting of the sound waves with the ... reflected sound wave reaches the ear more than 0.1 seconds after the original sound wave was heard.
Description : The time interval between the original sound and the reflected sound for an echo to be
Last Answer : heard is >=0.1s.
Description : Echo is a ------ of sound? A. Reflection (Answer) B. Refraction C. Interference D. None
Last Answer : A. Reflection (Answer)
Description : The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ----? A. 1120 ft B. 120 ft C. 56 ft (Answer) D. 100 ft E. None of these
Last Answer : C. 56 ft (Answer)
Description : The sensor that sends out sound pulses called pings, then receives the returning sound echo is called A : Active Sonar B : Passive Sonar C : Radar D : Laser Rangefinder
Last Answer : A : Active Sonar
Description : The sensor that sends out sound pulses called pings, then receives thereturning sound echo is called A : Active Sonar B : Passive Sonar C : Radar D : Laser Rangefinder
Description : To hear distinct echo each time interval between original sound and reflected sound must be a)0.2sec b)1sec c)2sec d)0.1sec
Last Answer : d)0.1sec
Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles ? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location
Last Answer : Echo location
Description : Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarisation
Last Answer : Reflection
Description : Echo sounding is the tech-nique applied to— (1) measure the depth of the sea (2) measure the amplitude of sound waves (3) record earthquake waves (4) record the density of air in the atmosphere
Last Answer : measure the depth of the sea
Description : Semibatch reactor is preferred, when a/an (A) A highly exothermic reaction is to be controlled (B) Undesirable side reaction (at high concentration of one of the reactants) is to be avoided (C) A gas is to be reacted with liquid (e.g. hydrogenation of fat) (D) All (A), (B), and (C
Last Answer : (D) All (A), (B), and (C
Description : Radio wave concentration in the direction of the signal emitted by a directional antenna. A. Back lobe radiation B. Side lobe radiation C. Major lobe radiation D. Transmitted signal
Last Answer : C. Major lobe radiation
Description : React Native Vs. Xamarin Vs. Ionic Vs. Flutter: Which Is Best For Cross-Platform Mobile App Development?
Last Answer : I think it is more a matter of opinion than anything else. Our people at work decided on Xamarin, although I don’t know what the basis was for their decision.
Description : Are birds actually bathing when they flutter around in a birdbath?
Last Answer : Indeed, they are bathing. Birds have oil glands near their tail section. When you see them preening (cleaning and smoothing their feathers), it is to remove dirt and insects, plus spread the oil ... source helps to remove any debris, which is why we witness them splashing about with wings extended.
Description : What do you call those decorative things that flutter in the wind and look kind of like sequins?
Last Answer : answer:Maybe they are sequins? Sequins can come in pretty large sizes. I remember the sixties, all right (or at least parts of them), but I don't remember any sequined bathing caps. I looked but ... Rubber flower petals, though-yeah. Beautiful, weren't they? I'm afraid I might have even had one.
Description : Why was the peanut sitting on the railroad track; it's heart all a-flutter?
Last Answer : answer:Maybe a homeless guy on a train tossed out a dud? Perhaps the peanut's heart was racing because he couldn't get help to get off the track, since he was so small I don't get it either ... fall down. Then there's Goosey Goosey Gander with the rhyme ending in you throwing a man down the stairs.
Description : What's that weird flutter in air when only one window is down in a car?
Last Answer : when there are 2 windows open, the air can move in and out of the 2, but with one it circulates around the car, back out tge same window. It’s called airflow.
Description : What are the poker terms in Black Books Episode "A Little Flutter"? Are they real?
Last Answer : I'll give it a shot but keep in mind the only thing I've found with more insider slang than poker is text messaging between 13 year old girls and their BFFs Piece be piece: Dealer's Choice ... bet would be one big blind, or 80 in this case Maybe someone can fill in the blanks from there
Description : from iPhone, can you search the flutter by key ? Or topic?
Last Answer : answer:There's a Browse by Topic link on the Ask-public home page after you log-in. It gives you a Topic tag cloud. I'm guessing this is also available to iPhone users.
Description : New Kids On The Block Are Coming Back: Does your heart flutter?
Last Answer : NO it does not.
Description : why can't flutter be more like iQuestions.com.
Last Answer : droll troll
Description : I can flutter and take your breath away. I can take a beating, but do not bruise. If I stopped you would be sure to lose. Everyday I am with you.What am I? -Riddles
Last Answer : Your heart.
Description : Should I use notifyListeners(); to update UI in flutter?
Last Answer : bolnewshelpline .com