What is the speed of sound in air under normal conditions? -General Knowledge

What is the speed of sound in air under normal conditions? -General Knowledge
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Speed of sound in air depends on the - (1) Chemical conditions (2) Physical conditions (3) Pitch (4) None of these

Description : Speed of sound in air depends on the - (1) Chemical conditions (2) Physical conditions (3) Pitch (4) None of these

Last Answer : (2) Physical conditions Explanation: Wind can increase or decrease the speed, and can even push sound waves sideways. Air density affects it. Temperature, pressure, humidity and gas mixture can each affect the density.

Pick out the correct statement. (A) Fanning friction factor is inversely proportional to Reynolds number always (B) The property of a randomly packed bed (with raschig rings) is given by the ratio of the total volume to the volume of voids in the bed (C) Mach number in an incompressible fluid is always unity (D) Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow

Description : Pick out the correct statement. (A) Fanning friction factor is inversely proportional to Reynolds number always (B) The property of a randomly packed bed (with raschig rings) is given by the ratio of the ... the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow

Last Answer : (D) Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow

Under normal conditions, the speed of a two-speed squirrel cage induction motor is changed by varying the ____________. A. frequency of the applied voltage B. resistance in the rotor circuit C. number of field poles D. amplitude of the applied voltage

Description : Under normal conditions, the speed of a two-speed squirrel cage induction motor is changed by varying the ____________. A. frequency of the applied voltage B. resistance in the rotor circuit C. number of field poles D. amplitude of the applied voltage

Last Answer : Answer: C

What is the speed of sound in normal air ?

Description : What is the speed of sound in normal air ?

Last Answer : Speed of sound in air under normal conditions - 332 m / s. .

Pick out the wrong statement. (A) In process heat exchangers, saturated steam is preferred over the superheated steam (B) The maximum is the emissive power of a surface at a temperature T1 occurs at a wavelength of λ1 . If the surface temperature is halved, the maximum in the emissive power would occur at a wavelength of 0.5 λ1 (C) When a vertical plate is heated in infinite air environmental under natural convection conditions, the velocity profile in air, normal to the plate, exhibits a maximum

Description : Pick out the wrong statement. (A) In process heat exchangers, saturated steam is preferred over the superheated steam (B) The maximum is the emissive power of a surface at a temperature T1 ... under natural convection conditions, the velocity profile in air, normal to the plate, exhibits a maximum

Last Answer : (B) The maximum is the emissive power of a surface at a temperature T1 occurs at a wavelength of λ1 . If the surface temperature is halved, the maximum in the emissive power would occur at a wavelength of 0.5 λ1

Which of the conditions listed will indicate the need to clean the insulation on the windings of an electric motor? A. Higher than normal operating temperature. B. Excessive vibration at normal speed. C. Sparking at the brushes. D. High megger readings.

Description : Which of the conditions listed will indicate the need to clean the insulation on the windings of an electric motor? A. Higher than normal operating temperature. B. Excessive vibration at normal speed. C. Sparking at the brushes. D. High megger readings.

Last Answer : Answer: A

......................... deals with making sound decisions under conditions of certainty, risk and uncertainty. a. Game theory b. Network analysis c. Decision theory d. None of these

Description : ......................... deals with making sound decisions under conditions of certainty, risk and uncertainty. a. Game theory b. Network analysis c. Decision theory d. None of these

Last Answer : c. Decision theory

The urine under normal conditions does not contain glucose because

Description : The urine under normal conditions does not contain glucose because

Last Answer : The urine under normal conditions does not contain glucose because A. The normal blood sugar ... in glomerular filtrate is converted into glycogen.

Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii) `BCl_(3)` (iii) `NCl_(3)` (iv) `AlC

Description : Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii) `BCl_(3)` (iii) `NCl_(3)` (iv) `AlC

Last Answer : Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii ... (vi) `PCl_(3)` (vii) `AsCl_(3)`

Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii) `BCl_(3)` (iii) `NCl_(3)` (iv) `AlC

Description : Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii) `BCl_(3)` (iii) `NCl_(3)` (iv) `AlC

Last Answer : Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii ... (vi) `PCl_(3)` (vii) `AsCl_(3)`

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. ... (C) unreactive D. (D) strongly basic

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... flammablity D. (D) high calorific value

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... reducing C. unreactive D. strongly basic

How durable is farberware cookware under normal usage conditions?

Description : How durable is farberware cookware under normal usage conditions?

Last Answer : Faberware cookware is very durable under normal usage conditions. However, they are not your best option for commercial purposes.

In humans under normal conditions loss of ketone bodies via urine is usually less than (A) 1 mg/24 hr (B) 4 mg/24 hr (C) 8 mg/24 hr (D) 10 mg/24 hr

Description : In humans under normal conditions loss of ketone bodies via urine is usually less than (A) 1 mg/24 hr (B) 4 mg/24 hr (C) 8 mg/24 hr (D) 10 mg/24 hr

Last Answer : Answer : A

Erythrocytes under normal conditions and microorganisms under anaerobic conditions may accumulate (A) NADPH (B) Pyruvate (C) Phosphoenolpyruvate (D) Lactate

Description : Erythrocytes under normal conditions and microorganisms under anaerobic conditions may accumulate (A) NADPH (B) Pyruvate (C) Phosphoenolpyruvate (D) Lactate

Last Answer : Answer : D

Under normal conditions, food proteins are generally readily digested upto the present (A) 67 to 73 (B) 74 to 81 (C) 82 to 89 (D) 90 to 97

Description : Under normal conditions, food proteins are generally readily digested upto the present (A) 67 to 73 (B) 74 to 81 (C) 82 to 89 (D) 90 to 97

Last Answer : Answer : D

Under normal conditions, storage batteries used for starting the emergency diesel generator are maintained in a charged state by which of the following methods? A. Trickle charging B. Fast charging C. Equalizing charge D. Reverse charging

Description : Under normal conditions, storage batteries used for starting the emergency diesel generator are maintained in a charged state by which of the following methods? A. Trickle charging B. Fast charging C. Equalizing charge D. Reverse charging

Last Answer : Answer: A

Under which of the following conditions will a lead-acid battery be given a 'test discharge'? A. To determine its capacity. B. Whenever a cell cannot be brought within 10 points of full charge specific gravity. C. When one or more cells is found to have less than normal voltage after an equalizing charge. D. All of the above.

Description : Under which of the following conditions will a lead-acid battery be given a 'test discharge'? A. To determine its capacity. B. Whenever a cell cannot be brought within 10 points of full charge ... cells is found to have less than normal voltage after an equalizing charge. D. All of the above.

Last Answer : Answer: D

A ground in an electrical circuit outside the engine room _____________. A. cannot be detected under normal conditions B. is of no consequence to engineering personnel C. is indicated at the branch circuit breaker panel D. is indicated by the ground detecting lamps on the main switchboard

Description : A ground in an electrical circuit outside the engine room _____________. A. cannot be detected under normal conditions B. is of no consequence to engineering personnel C. is indicated at the branch circuit breaker panel D. is indicated by the ground detecting lamps on the main switchboard

Last Answer : Answer: D

It is an average power of a radio transmitter supplied to the antenna transmission line taken during a long sufficient interval of time and compared with the lowest frequency encountered in the modulation, taken under the normal operating conditions. A. Carrier power B. Rated power C. Mean power D. Peak envelop power

Description : It is an average power of a radio transmitter supplied to the antenna transmission line taken during a long sufficient interval of time and compared with the lowest frequency encountered in the modulation ... operating conditions. A. Carrier power B. Rated power C. Mean power D. Peak envelop power

Last Answer : C. Mean power

ECE Board Exam March 1996 The K-factor under normal atmospheric conditions in a microwave radio data profile calculation is equal to ___________. A. 2/3 B. 0 C. 4/3 D. Infinity

Description : ECE Board Exam March 1996 The K-factor under normal atmospheric conditions in a microwave radio data profile calculation is equal to ___________. A. 2/3 B. 0 C. 4/3 D. Infinity

Last Answer : C. 4/3

A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state, (A) Composition of vapors and that of liquid do not vary throughout the column (B) Reboiler load and condenser load are minimum (C) The top and bottom compositions are unchanged with and without total reflux (D) The top and bottom compositions correspond to the maximum enrichment available

Description : A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are ... and without total reflux (D) The top and bottom compositions correspond to the maximum enrichment available

Last Answer : (D) The top and bottom compositions correspond to the maximum enrichment available

Under normal operating conditions, the bearings are filled with the proper type of lubricant after every hours of working about a) 6 hours b) 8 hoursc) 10 hours d) 12 hours

Description : Under normal operating conditions, the bearings are filled with the proper type of lubricant after every hours of working about a) 6 hours b) 8 hoursc) 10 hours d) 12 hours

Last Answer : c) 10 hours

Why is vivipary an undesirable character for annual crop plants? (a) It reduces the vigour of the plant. (b) It adversely affects the fertility of the plant. (c) The seeds exhibit long dormancy. (d) The seeds cannot be stored under normal conditions for the next season

Description : Why is vivipary an undesirable character for annual crop plants? (a) It reduces the vigour of the plant. (b) It adversely affects the fertility of the plant. (c) The seeds exhibit long dormancy. (d) The seeds cannot be stored under normal conditions for the next season

Last Answer : (d) The seeds cannot be stored under normal conditions for the next season

Under normal conditions which one is completely reabsorbed in the renal tubule? (a) Urea (b) Uric acid (c) Salts (d) Glucose

Description : Under normal conditions which one is completely reabsorbed in the renal tubule? (a) Urea (b) Uric acid (c) Salts (d) Glucose

Last Answer : d) Glucose

In plain sedimentation tanks under normal conditions, impurities are removed upto (A) 60 % (B) 70 % (C) 80 % (D) 90 %

Description : In plain sedimentation tanks under normal conditions, impurities are removed upto  (A) 60 %  (B) 70 %  (C) 80 %  (D) 90 %

Last Answer : (B) 70 % 

The average domestic consumption under normal conditions in an Indian city per day per person, is (A) 105 litres (B) 115 litres (C) 125 litres (D) 135 litres

Description : The average domestic consumption under normal conditions in an Indian city per day per person,  is  (A) 105 litres  (B) 115 litres  (C) 125 litres  (D) 135 litres

Last Answer : (D) 135 litres

Under normal conditions using an ordinary cement, the period of removal of the form work, is: (A) 7 days for beam soffits (B) 14 days for bottom slabs of spans 4.6 m and more (C) 21 days for bottom beams over 6 m spans (D) All the above

Description : Under normal conditions using an ordinary cement, the period of removal of the form work, is: (A) 7 days for beam soffits (B) 14 days for bottom slabs of spans 4.6 m and more (C) 21 days for bottom beams over 6 m spans (D) All the above

Last Answer : Answer: Option D

Under normal loading conditions, the tensile stressed setup in the concrete will be _________the permissible stress. (a) More than (b) Less than (c) Equal to (d) All the above

Description : Under normal loading conditions, the tensile stressed setup in the concrete will be _________the permissible stress. (a) More than (b) Less than (c) Equal to (d) All the above

Last Answer : (a) More than

Allowable crack width for reinforce concrete structure under normal conditions is [ A ] 0 [ B ] 0.1 mm [ C ] 0.2 mm [ D ] 0.3 mm

Description : Allowable crack width for reinforce concrete structure under normal conditions is [ A ] 0 [ B ] 0.1 mm [ C ] 0.2 mm [ D ] 0.3 mm

Last Answer : [ D ] 0.3 mm

shaped blades are best suited for i. Minimum tillage of trashy land at shallow depths j. Dried hard soils k. Cutting and pulverisation in wet sticky clay soil l. Working under normal field conditions

Description : shaped blades are best suited for i. Minimum tillage of trashy land at shallow depths j. Dried hard soils k. Cutting and pulverisation in wet sticky clay soil l. Working under normal field conditions

Last Answer : i. Minimum tillage of trashy land at shallow depths

Hook type blades best suited for e. Minimum tillage of trashy land at shallow depths f. Dried hard soils g. Cutting and pulverisation especially in wet sticky clay soil h. Working under normal field conditions

Description : Hook type blades best suited for e. Minimum tillage of trashy land at shallow depths f. Dried hard soils g. Cutting and pulverisation especially in wet sticky clay soil h. Working under normal field conditions

Last Answer : f. Dried hard soils

Long-term equilibrium of an Industry under a perfectly market conditions in achieved when (a) All the firms are earning normal profit ; (b) All the firms are in equilibrium ; (c) There is no further entry or exit of firms from the industry ; (d) All the three

Description : Long-term equilibrium of an Industry under a perfectly market conditions in achieved when (a) All the firms are earning normal profit ; (b) All the firms are in equilibrium ; (c) There is no further entry or exit of firms from the industry ; (d) All the three

Last Answer :  (d) All the three

A material that does not allow current under normal conditions is a(n)?

Description : A material that does not allow current under normal conditions is a(n)? A.insulator B.conductor C.semiconductor D.valence

Last Answer : A material that does not allow current under normal conditions is a(n)? A.insulator B.conductor C.semiconductor D.valence

The purpose of a short circuit forcing module (short time trip) installed in a branch line is to provide ____________. A. high speed clearance of low impedance short circuits in the branch B. continuity of service on main bus under short circuit conditions in a branch C. isolation of short circuits by selective tripping of branch circuit breakers D. all of the above

Description : The purpose of a short circuit forcing module (short time trip) installed in a branch line is to provide ____________. A. high speed clearance of low impedance short circuits in the branch B. ... C. isolation of short circuits by selective tripping of branch circuit breakers D. all of the above

Last Answer : Answer: D

Consider the following statements: [IES 2007] For a journal rotating in a bearing under film lubrication conditions, the frictional resistance is- 1. Proportional to the area of contact 2. Proportional to the viscosity of lubricant 3. Proportional to the speed of rotation 4. Independent of the pressure Which of the statements given above are correct? (a) 1, 2, 3 and 4 (b) 1 and 4 only (c) 2, 3 and 4 only (d) 2 and 3 only

Description : Consider the following statements: [IES 2007] For a journal rotating in a bearing under film lubrication conditions, the frictional resistance is- 1. Proportional to the area of contact 2. Proportional to the viscosity of lubricant 3. ... 4 (b) 1 and 4 only (c) 2, 3 and 4 only (d) 2 and 3 only

Last Answer : (a) 1, 2, 3 and 4

Under constant load conditions, the speed of a d.c. motor is affected by?

Description : Under constant load conditions, the speed of a d.c. motor is affected by?

Last Answer : Under constant load conditions, the speed of a d.c. motor is affected by field flux.

0 কত What is the velocity of sound in charged air at normal temperature and normal pressure ?

Description : 0 কত What is the velocity of sound in charged air at normal temperature and normal pressure ?

Last Answer : At a temperature of 0 ° C and normal pressure, the speed of sound in the charged air is 332 m / s.

What is the speed of sound in the air ?

Description : What is the speed of sound in the air ?

Last Answer : A sound is a type of wave created by the vibration of matter. The sensation of hearing is created when this vibration is held in the human ear. These waves flow through gaseous , liquid and solid matter ... Hz. Not all vibrations are caught in the human ear and do not create the feeling of hearing.

What is the speed of sound in air ?

Description : What is the speed of sound in air ?

Last Answer : Speed of sound in air 350ms -1

What is the speed of sound in air ?

Description : What is the speed of sound in air ?

Last Answer : Speed of sound in air 330 m / s

Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) of air, then use dimensional analysis to obtain

Description : Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) of air, then use dimensional analysis to obtain

Last Answer : Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) ... analysis to obtain an expression for the speed of sound.

Is the speed of sound higher in air or water?

Description : Is the speed of sound higher in air or water?

Last Answer : The sound of speed is higher in waterit will slow down because water is harder to go through! I THINK? ........ :PSound does not travel at the same speed in air as it does in water. In dry air at ... water. That's why you can hear that kid slashing and screaming like he's right next to you. :)yes.

Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Description : Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Last Answer : (1) Pressure Explanation: The speed of sound in air depends on the density of air and the density of air depends on the temperature. The speed of sound is unaffected by pressure. If the atmospheric pressure changes, the speed of sound in air remains constant.

Speed of sound is the greatest in : (1) Water (2) Air (3) Glass (4) Glycerine

Description : Speed of sound is the greatest in : (1) Water (2) Air (3) Glass (4) Glycerine

Last Answer : (3) Glass Explanation: Sound travels faster in liquids and non-porous solids than it does in air. It travels about 4.3 times as fast in water (1,484 m/s), and nearly 15 times as fast in iron (5,120 m/s), than in air at 20 degrees Celsius.

What is the temperature at which the speed of sound in air becomes double its value of 0°C?

Description : What is the temperature at which the speed of sound in air becomes double its value of 0°C?

Last Answer : 819°C

The speed of sound in air at sea level is approximately------? A. 300 meter per second B. 320 meter per second C. 340 meters per second (Answer) D. 370 meter per second

Description : The speed of sound in air at sea level is approximately------? A. 300 meter per second B. 320 meter per second C. 340 meters per second (Answer) D. 370 meter per second

Last Answer : C. 340 meters per second (Answer)

Hygrometer is used for measuring the ------? A. Speed of sound B. Density of milk C. Humidity of air (Answer) D. Specific gravity of liquids E. None of these

Description : Hygrometer is used for measuring the ------? A. Speed of sound B. Density of milk C. Humidity of air (Answer) D. Specific gravity of liquids E. None of these

Last Answer : C. Humidity of air (Answer)

The speed of sound through air is ______ . a)330m/sec b)300 m/sec c)300 km/sec d)290 m/sec

Description : The speed of sound through air is ______ . a)330m/sec b)300 m/sec c)300 km/sec d)290 m/sec

Last Answer : a)330m/sec