What must the air do inside the the tube of a brass instrument to produce a sound?

What must the air do inside the the tube of a brass instrument to produce a sound?
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Vibrate
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Description : What is a mute in brass instrument?

Last Answer : It's a little device you put in the bell of a brass instrumentto change the sound. It comes out as quieter and sounds like theinstrument has a cold

In addition to its use in the military which brass instrument was used on festive occasions to announce that dinner guests needed to sit down and stand up at the beginning and end of meal?

Description : In addition to its use in the military which brass instrument was used on festive occasions to announce that dinner guests needed to sit down and stand up at the beginning and end of meal?

Last Answer : buccina

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For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of (a) copper (b) aluminium (c) steel (d) brass

Description : For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of (a) copper (b) aluminium (c) steel (d) brass

Last Answer : Ans: c

Which of the following commonly used condenser tube materials has the lowest thermal conductivity? (A) Admiralty brass (B) Stainless steel (C) Aluminium brass (D) Titanium

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A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists of w) electrons which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation

Description : A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists ... which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation 

Last Answer : ANSWER: X -- SOFT X-RAYS

A hemispherical bowl made of brass has inner diameter 10.5cm. Find the cost of tin-plating it on the inside at the rate of Rs 16 per 100 cm2. -Maths 9th

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Last Answer : Inner radius of hemispherical bowl, say r = diameter/2 = (10.5)/2 cm = 5.25 cm Formula for Surface area of hemispherical bowl = 2πr2 = 2 (22/7) (5.25)2 = 173.25 Surface area of hemispherical ... of tin-plating the inner side of the hemispherical bowl at the rate of Rs 16 per 100 cm2 is Rs 27.72.

The most accurate way to evaluate the effectiveness of root planning is by: A. Inspect the root surface with an instrument for root smoothness B. Use air for visual inspection C. Activate a curette against root surface and listen for a high pitched sound which indicates a smooth, hard surface. D. Evaluate the soft tissue at the end of the appointment for a decrease oedema and bleeding E. Evaluate the soft tissues 10 to 14 days later.

Description : The most accurate way to evaluate the effectiveness of root planning is by: A. Inspect the root surface with an instrument for root smoothness B. Use air for visual inspection C. Activate a ... the appointment for a decrease oedema and bleeding E. Evaluate the soft tissues 10 to 14 days later.

Last Answer : E. Evaluate the soft tissues 10 to 14 days later.

Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is (A) Finned tube heat exchanger with air inside and steam outside (B) Finned tube heat exchanger with air outside and steam inside (C) Shell and tube heat exchanger with air inside tubes and steam on shell side (D) Shell and tube heat exchanger with air on shell side and steam inside tubes

Description : Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both ... steam on shell side (D) Shell and tube heat exchanger with air on shell side and steam inside tubes

Last Answer : (B) Finned tube heat exchanger with air outside and steam inside

Brass gets discolored in air because of the presence of which of the gases in the air? -Science

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Last Answer : The answer is Hydrogen Sulphide.

Brass gets discoloured in air due to constant exposure in presence of: (1) Aluminium phosphide (2) Hydrogen sulphide (3) Hydrogenated wafers (4) Aluminium sulphide

Description : Brass gets discoloured in air due to constant exposure in presence of: (1) Aluminium phosphide (2) Hydrogen sulphide (3) Hydrogenated wafers (4) Aluminium sulphide

Last Answer : (2) Hydrogen sulphide Explanation: Brass gets discoloured in air because of Hydrogen sulphide. Transition elements are coloured. The brass is combination of Zn and Cu. But it is discoloured due to hydrogen sulphide in air.

Brass gets discoloured in air due to the presence of which gas in air?

Description : Brass gets discoloured in air due to the presence of which gas in air?

Last Answer : Hydrogen sulphide (H2S)

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Last Answer : Hydrogen sulphide

Which among the following is pure matter ? (1) Carbon–dioxide (2) Brass (3) Air (4) Iron

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Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. (1) small current carrying wire (2) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution

Description : Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. ... ) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution

Last Answer : (3) optical fibre Explanation: An endoscope can consist of a rigid or flexible tube and a light delivery system to illuminate the organ or object under inspection. The light source is normally outside the ... in the case of rigid endoscopes or a bundle of fiber optics in the case of a fiberscope.

Most appropriate instrument for measurement of internal and external diameter of a tube is A. vernier callipers B. micrometer screw gauge C. meter rule D. measuring tape

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Last Answer : vernier callipers

The best instrument for measuring the velocity of a stream flow is (A) Pitot tube (B) Price's current meter (C) Surface float (D) Sub-surface float

Description : The best instrument for measuring the velocity of a stream flow is (A) Pitot tube (B) Price's current meter (C) Surface float (D) Sub-surface float

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Which of the following instrument can be used for measuring speed of a submarine moving in deep sea? (A) Venturimeter (B) Orifice plate (C) Hot wire anemometer (D) Pitot tube

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Which of the following instrument can be used for measuring speed of an aeroplane? (A) Venturimeter (B) Orifice plate (C) Pitot tube(D) Rotameter

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Last Answer : Answer: Option C

What instrument is used to measure atmospheric pressure?  A. Pitot tube  B. Wind vane  C. Barometer  D. Manometer

Description : What instrument is used to measure atmospheric pressure?  A. Pitot tube  B. Wind vane  C. Barometer  D. Manometer

Last Answer : Barometer

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Description : Which of the following is NOT an instrument used to measure pressure?  A. Bourdon tube  B. Pitot tube  C. Aneroid  D. Manometer

Last Answer : Pitot tube

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Last Answer : i. Height of instrument: It is the reduced level of line of collimation when the leveling instrument is properly leveled. It is obtained by adding the BS reading to RL of bench mark or change point on which the ... when the bubble is at the center of its run i.e. at middle point of the tube.

Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. (1) small current carrying wire (2) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution

Description : Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains ... ) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution 

Last Answer : optical fibre

Pick up the correct statement from the following: (A) Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer (B) Cupola furnace is used for the manufacture of cast iron (C) Red short iron is of no value for welding purpose (D) All the above

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Last Answer : Answer: Option D

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Which field is used to produce deflection in a television picture tube? -Do You Know?

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Last Answer : answer:

Coolis tube is used to produce – (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

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Last Answer : (3) X-rays Explanation: X-rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light. X-ray tubes evolved from experimental Crookes tubes ... X-rays created the field of radiography, the imaging of opaque objects with penetrating radiation.

Which field is used to produce deflection in a television picture tube?

Description : Which field is used to produce deflection in a television picture tube?

Last Answer : A magnetic fields

Function of filiform apparatus is to (a) recognise the suitable pollen at stigma (b) stimulate division of generative cell (c) produce nectar (d) guide the entry of pollen tube.

Description : Function of filiform apparatus is to (a) recognise the suitable pollen at stigma (b) stimulate division of generative cell (c) produce nectar (d) guide the entry of pollen tube.

Last Answer : (d) guide the entry of pollen tube.

Coolis tube is used to produce (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Description : Coolis tube is used to produce (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Last Answer : X-rays

Where can I find an affordable instrument to measure sound volume?

Description : Where can I find an affordable instrument to measure sound volume?

Last Answer : answer:Just get videos with timestamps. Personally I would utilize a 20 oz coke bottle half full of gas capped with a rag and a match. Or invite me over when he pulls his gun he better be a better shot than I am.

The quality of sound produced by an instrument depends on the which thing? -Do You Know?

Description : The quality of sound produced by an instrument depends on the which thing? -Do You Know?

Last Answer : Quality is that characteristic of sound which differentiate between two sounds even when they are of same intensity and same pitch , and it depends upon the number of overtones . Pitch will ... sound . Loudness will change the vibrational energy . Amplitude will change the intensity of sound .

The mean velocity of blood flow in the aorta during systole is 1.5 × 10–2 m / s. What is the frequency change in an instrument with a signal frequency of 105 Hz (speed of sound in blood, 1570 m / s)?

Description : The mean velocity of blood flow in the aorta during systole is 1.5 × 10–2 m / s. What is the frequency change in an instrument with a signal frequency of 105 Hz (speed of sound in blood, 1570 m / s)?

Last Answer : 1060 kg/m3, very close to pure water's density of 1000 kg/m3. The average adult has a blood volume of roughly 5 litres (11 US pt) or 1.3 gallons, which is composed of plasma ... .4 million (female) erythrocytes: Red blood cells contain the blood's hemoglobin and distribute oxygen. Mature red blood

What stringed instrument makes the lowest sound?

Description : What stringed instrument makes the lowest sound?

Last Answer : The cello makes the lowest sound of a string instrument.

What is the name of the instrument used to determine the intensity of sound ?

Description : What is the name of the instrument used to determine the intensity of sound ?

Last Answer : The name of the instrument used to determine the intensity of sound is audio meter.

Which instrument is used to measure the sound produced underwater?

Description : Which instrument is used to measure the sound produced underwater?

Last Answer : Answer: Hydrophone

What instrument Is the classification for a solid instrument that produces sound when it is hit scraped or struck.?

Description : What instrument Is the classification for a solid instrument that produces sound when it is hit scraped or struck.?

Last Answer : Idiophone is the classification for a solid instrument thatproduces sound when it is hit scraped or struck.

Is the classification for an instrument sound by the vibration of tightly stretched membrane?

Description : Is the classification for an instrument sound by the vibration of tightly stretched membrane?

Last Answer : A stretched membrane (natural animal skin or plastic) that isthen beaten by a drum stick, or a snare ,or a padded stick (as usedon a kettle drum) are generally classed as a member of thepercussion group of instruments in an orchestra.

What string instrument makes the lowest sound?

Description : What string instrument makes the lowest sound?

Last Answer : The cello makes the lowest sound of a string instrument.

What string instrument makes the highest sound?

Description : What string instrument makes the highest sound?

Last Answer : The viola makes the highest sound of any string instrument.

Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power

Description : Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power

Last Answer : (2) Measuring instrument for frequency of electromagnetic waves

The quality or tone of a musical sound produced by a stringed instrument depends on – (1) frequency of vibration (2) length of the strings in the instrument (3) Amplitude of vibration (4) wave form of the sound

Description : The quality or tone of a musical sound produced by a stringed instrument depends on – (1) frequency of vibration (2) length of the strings in the instrument (3) Amplitude of vibration (4) wave form of the sound

Last Answer : (4) wave form of the sound Explanation: The timbre or quality of a sound depends on its wave form, which varies with the number of over-tones, or harmonics, that are present, their ... particular musical sound have a different sound from another, even when they have the same pitch and loudness.

Hydroscope is an instrument that shows changes in: (1) Sound under water (2) Atmospheric humidity (3) Density of liquid (4) None of these

Description : Hydroscope is an instrument that shows changes in: (1) Sound under water (2) Atmospheric humidity (3) Density of liquid (4) None of these

Last Answer : (4) None of these Explanation: Hydroscope is an optical device for enabling a person to see an object at a considerable distance below the surface of water by means of a series of mirrors ... usually converted to sound pressure level (SPL), a logarithmic measure of the mean square acoustic pressure.

The instrument which uses sound waves to measure the depth of oceans is – (1) Radar (2) Sonar (3) Altimeter (4) Venturimeter

Description : The instrument which uses sound waves to measure the depth of oceans is – (1) Radar (2) Sonar (3) Altimeter (4) Venturimeter

Last Answer : (2) Sonar Explanation: The instrument which uses sound waves to measure the depth of oceans is sonar. Sound waves can travel much faster from one point to another. Sound waves are far more ... Sonar may also be used in air for robot navigation, and SODAR is used for atmospheric investigations.

A decibel is – (1) A musical instrument (2) The wavelength of noise (3) A musical note (4) A measure of sound level

Description : A decibel is – (1) A musical instrument (2) The wavelength of noise (3) A musical note (4) A measure of sound level

Last Answer : (4) A measure of sound level Explanation: The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference ... ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities.

The quality of sound produced by an instrument depends on the which thing?

Description : The quality of sound produced by an instrument depends on the which thing?

Last Answer : Number of overtones