Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). (A) 1-2 (B) 5-10 (C) 15-20 (D) 25-30

Ambient noise level can be reduced by __________ decibels by planting
trees (like coconut, neem etc.) near public utility buildings (like hospitals &
schools).
(A) 1-2
(B) 5-10
(C) 15-20
(D) 25-30
by

1 Answer

Answer :

(B) 5-10
by

Related questions

Noise level in a quiet private business office is about __________ decibels. (A) 25 (B) 50 (C) 70 (D) 85

Description : Noise level in a quiet private business office is about __________ decibels. (A) 25 (B) 50 (C) 70 (D) 85

Last Answer : (B) 50

Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. (A) 3 (B) 30(C) 7 (D) 70

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Last Answer : (A) 3

Noise level during normal conversation among men is about __________ decibels. (A) 10 (B) 45 (C) 90 (D) 115

Description : Noise level during normal conversation among men is about __________ decibels. (A) 10 (B) 45 (C) 90 (D) 115

Last Answer : (B) 45

As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise. (A) 110 (B) 85 (C) 60 (D) 45

Description : As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise. (A) 110 (B) 85 (C) 60 (D) 45

Last Answer : (B) 85

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. (A) 120 (B) 140 (C) 170 (D) 200

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Last Answer : (C) 170

Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels. (A) 75 (B) 95 (C) 120 (D) 140

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Last Answer : (B) 95

The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels. (A) 60(B) 90 (C) 105 (D) 120

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Last Answer : (B) 90

. Noise level inside a jet airliner in normal flight is about __________ decibels. (A) 80 (B) 100 (C) 125 (D) 150

Description : . Noise level inside a jet airliner in normal flight is about __________ decibels. (A) 80 (B) 100 (C) 125 (D) 150

Last Answer : (B) 100

Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels. (A) 105 (B) 135 (C) 160 (D) 185

Description : Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels. (A) 105 (B) 135 (C) 160 (D) 185

Last Answer : (B) 135

Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels. (A) 20 (B) 60 (C) 90 (D) 120

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Last Answer : (C) 90

'Utilities' in a chemical process plant includes compressed air, steam, water, electrical power, oxygen, acetylene, fuel gases etc. Utility costs for ordinary chemical process plants ranges roughly from __________ percent of the total product cost. (A) 1 to 5 (B) 10 to 20 (C) 25 to 35 (D) 35 to 45

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Last Answer : (B) 10 to 20

Why is mold dangerous? Requiring immediate attention in schools, public buildings, etc.?

Description : Why is mold dangerous? Requiring immediate attention in schools, public buildings, etc.?

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Shouting by a man at his full voice corresponds to a voice level of about __________ decibels. (A) 25 (B) 50 (C) 80 (D) 120

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Last Answer : (C) 80

High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent. (A) 5 to 10 (B) 15 to 25 (C) 45 to 50 (D) 75 to 80

Description : High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ ... to 10 (B) 15 to 25 (C) 45 to 50 (D) 75 to 80

Last Answer : (C) 45 to 50

Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. (A) 85 (B) 105 (C) 125 (D) 145

Description : Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. (A) 85 (B) 105 (C) 125 (D) 145

Last Answer : (B) 105

Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. (A) 35 (B) 75 (C) 95 (D) 105

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The National tree of India – (1) The coconut (2) The sandalwood (3) The banyan (4) the neem

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The cake of which one of the following materials prepared with the comparable processing technology, contains the largest percentage of ‘N’ plant nutrient among all the materials given in the list ? (A) Coconut (B) Neem (C) Palm nut (D) Mahua (E) Karanj

Description : The cake of which one of the following materials prepared with the comparable processing technology, contains the largest percentage of ‘N’ plant nutrient among all the materials given in the list ? (A) Coconut (B) Neem (C) Palm nut (D) Mahua (E) Karanj

Last Answer : (C) Palm nut

Ambient noise level in residential area is

Description : Ambient noise level in residential area is

Last Answer : Ambient noise level in residential area is A. 75/70 dB B. 65/55 dB C. 55/45 dB D. 50 /45dB

Ambient noise level in residential area is

Description : Ambient noise level in residential area is

Last Answer : Ambient noise level in residential area is A. 75/70 dB B. 65/55 dB C. 55/45 dB D. 50 /45dB

The U.S. Surgeon General recommended that fat be reduced to ____ percent of the total dietary calories. a. 20 c. 15 b. 30 d. 25

Description : The U.S. Surgeon General recommended that fat be reduced to ____ percent of the total dietary calories. a. 20 c. 15 b. 30 d. 25

Last Answer : b. 30

You are measuring noise at a +3 dB level point, using the Lenkurt 601A, F1A weighting network, and a flat meter. The meter reading is -57dBm. This is ________dBa0. A. 20 B. 15 C. 25 D. 17

Description : You are measuring noise at a +3 dB level point, using the Lenkurt 601A, F1A weighting network, and a flat meter. The meter reading is -57dBm. This is ________dBa0. A. 20 B. 15 C. 25 D. 17

Last Answer : C. 25

Indicate the false statement. Noise figure is defined as A. the ratio of the S/N power supplied at the input terminal of a receiver or amplifier to the S/N power supplied to the output or load resistor B. noise factor expressed in decibels C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signal D. S/N of an ideal system divided by S/N at the output of the receiver or amplifier under test, both working at the same temperature over the same bandwidth and fed from the same source

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Last Answer : C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signals

What bandwidth is needed to support a capacity of 128 kbps when the signal power to noise power ratio in decibels is 100? A. 19224 Hz B. 3853 Hz C. 19244 Hz D. 3583 Hz

Description : What bandwidth is needed to support a capacity of 128 kbps when the signal power to noise power ratio in decibels is 100? A. 19224 Hz B. 3853 Hz C. 19244 Hz D. 3583 Hz

Last Answer : B. 3853 Hz

Noise Pollution is measured in a) Hertz b) Fathoms c) Manometers d) Decibels.

Description : Noise Pollution is measured in a) Hertz b) Fathoms c) Manometers d) Decibels. 

Last Answer : d) Decibels.

Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. (A) 10-15 (B) 25-30 (C) 45-50 (D) 65-70

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Last Answer : (B) 25-30

Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is retained in ETC iii) heat loss due to conduction back to atmosphere from ETC is high iv) performance of evacuated tube is highly dependent upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii

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Last Answer : d) i & ii

Consider the following statement and identify with the help of the code the tree with which the statement is related to? The branches of this tree root themselves like new trees over a large area. The roots then give rise to more trunks and branches. Because of this characteristic and its longevity, this tree is considered immortal and is an integral part of the myths and. legends of India. [CDS 2009] (a) Banyan (b) Neem (c) Tamarind (lmli) (d) Peepal

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Last Answer : Ans: (a)

Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about __________ decibels. (A) 90 (B) 120 (C) 150 (D) 180

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somoan coconut planting

Description : somoan coconut planting

Last Answer : Need Answer

Human beings can hear the sound range between: (1) 10 to 20 decibels (2) 100 to 150 decibels (3) 50 to 60 decibels (4) None of the above

Description : Human beings can hear the sound range between: (1) 10 to 20 decibels (2) 100 to 150 decibels (3) 50 to 60 decibels (4) None of the above

Last Answer : (4) None of the above Explanation: The most accepted sound range of human being is 0 to 120 decibels.

Water availability, temperature extremes, and __________ should be considered when selecting trees for the landscape. a. Slope b. Topography c. Soil type d. Buildings present

Description : Water availability, temperature extremes, and __________ should be considered when selecting trees for the landscape. a. Slope b. Topography c. Soil type d. Buildings present

Last Answer : Soil typ

Effects of Telemedicine results in i) Medical assistants at the remote sites ii) Small hospitals can have hardware costs reduced iii) Research study and scope for medical and cost effectiveness iv) All of these

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Last Answer : iv) All of these

A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200

Description : A thin, flat & square plate measuring 2 m 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will ... heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200

Last Answer : (B) 100

The construction joints in buildings are provided after (A) 10 m (B) 15 m (C) 20 m (D) 40 m

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An amplifier operating over the frequency range of 455 to 460 kHz has a 200 kΩ input resistor. What is the RMS noise voltage at the input to this amplifier if the ambient temperature is 17˚C ? A. 40 µV B. 4.0 µV C. 400 µV

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Two resistors, 20kΩ, and 50kΩ are at ambient temperature. Calculate for a bandwidth equal to 100kHz, the thermal noise voltage for the two resistors connected in parallel. A. 0.4782µV B. 4278 µV C. 4.78 µV D. 47.8 µV

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Last Answer : C. 4.78 µV

What is the optimum spacing required for planting onion seedlings during Rabi season? a. 25*25 cm B. 20*20 cm C. 5*5 cm D. 10*10 cm

Description : What is the optimum spacing required for planting onion seedlings during Rabi season? a. 25*25 cm B. 20*20 cm C. 5*5 cm D. 10*10 cm

Last Answer : D. 10*10 cm

Which of the following statements describes the significance of ambient temperature in relation to the service life of electronic components? A. Ambient temperature should be as high as possible to drive off moisture. B. Increased ambient temperature decreases the service life of electronic components. C. Ambient temperature is not significant as long as the relative humidity is kept low. D. A reduced ambient temperature causes a corresponding reduced service life.

Description : Which of the following statements describes the significance of ambient temperature in relation to the service life of electronic components? A. Ambient temperature should be as high as possible to drive ... is kept low. D. A reduced ambient temperature causes a corresponding reduced service life.

Last Answer : Answer: B

. The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C-1 respectively. The ambient air is at 30°C and the heat transfer co-efficient between the outer surface of wall and air is 20 W.m-2 .°C-1 . The rate of heat loss from the outer surface in W.m-2 is (A) 165.4 (B) 167.5 (C) 172.5 (D) 175

Description : . The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C-1 respectively. The ambient air is at 30°C ... from the outer surface in W.m-2 is (A) 165.4 (B) 167.5 (C) 172.5 (D) 175

Last Answer : (A) 165.4

What are those things in hospitals called where the bags of either blood water etc. hang from the patients sometimes have to walk with it too basically a coat hanger on wheels haha..?

Description : What are those things in hospitals called where the bags of either blood water etc. hang from the patients sometimes have to walk with it too basically a coat hanger on wheels haha..?

Last Answer : They are called infusion pole or infusion stand

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2.k), when the insulation thickness is __________ mm. (A) 15 (B) 25 (C) 10 (D) 30

Description : Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2.k), when the insulation thickness is __________ mm. (A) 15 (B) 25 (C) 10 (D) 30

Last Answer : (B) 25

The total utility from 9 units of commodity x is 20 and from 10 units is 15. Calculate the marginal utility from 10th unit. (1) 0.5 (3) 5 (2) -0.5 (4) -5

Description : The total utility from 9 units of commodity x is 20 and from 10 units is 15. Calculate the marginal utility from 10th unit. (1) 0.5 (3) 5 (2) -0.5 (4) -5

Last Answer : (4) -5 Explanation: Marginal Utility = Change in Total Utility / Change in number of Units consumed. The first component of the formula is to calculate the change in total utility. The second component of the marginal utility formula is the change in the number of units that have been consumed.

The total utility from 9 units of commodity x is 20 and from 10 units is 15. Calculate the marginal utility from 10th unit. (1) 0.5 (2) –0.5 (3) 5 (4) –5

Description : The total utility from 9 units of commodity x is 20 and from 10 units is 15. Calculate the marginal utility from 10th unit. (1) 0.5 (2) –0.5 (3) 5 (4) –5

Last Answer : –5

Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan (A) With greater number of blades (B) Of increased diameter (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan (A) With greater ... (B) Of increased diameter (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Pick out the correct statement. (A) Noise from ball mills can be dealt with by fibre glass lined enclosures (B) Noise from vibrating chutes can be reduced by lining the metallic chute with rubber (C) Noise of conveyor belt system is reduced by using urethane coated cloth conveyor belts and rubber/plastic covered metallic rollers (D) All (A), (B) & (C)

Description : Pick out the correct statement. (A) Noise from ball mills can be dealt with by fibre glass lined enclosures (B) Noise from vibrating chutes can be reduced by lining the metallic chute with rubber (C) Noise ... cloth conveyor belts and rubber/plastic covered metallic rollers (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Want to know how to get rid of piles ? I have been suffering from piles for the last 2 years. Recently I went to a homeopathic doctor and he assured me that the problem will be reduced in 20-25 days and will get better in 3-4 months with some food medicine and a liquid medicine to apply on the piles. But I haven't noticed any improvement in the medicine for 15 days now, but more frequent itching in the rectum and putting that liquid medicine in the piles, the burning sensation starts immediately and after a while it subsides ... Now I am very nervous and scared about this medicine Turn to cancer !!! Could it really be that ... so what can I do , please help me with some advice ...

Description : Want to know how to get rid of piles ? I have been suffering from piles for the last 2 years. Recently I went to a homeopathic doctor and he assured me that the problem will be reduced in 20-25 days and will ... !!! Could it really be that ... so what can I do , please help me with some advice ...

Last Answer : If you take homeopathic medicine then the homeopathic doctor has rightly said that it will take 3/4 months to get better but you need to consult a piles expert 2 years ago. You can stay. Therefore, a piles ... by the piles doctor. So I said take the advice of a piles expert to get a quick solution.

In a fruit ********, for every 25 ml of orange juice you need 30 ml of apple juice and 45 ml of coconut milk. What proportion of the ******** is orange juice Give your answer as a fraction in its simplest form.?

Description : In a fruit cocktail, for every 25 ml of orange juice you need 30 ml of apple juice and 45 ml of coconut milk. What proportion of the cocktail is orange juice Give your answer as a fraction in its simplest form.?

Last Answer : 25

In ordinary residential and public buildings, the damp proof course is generally provided at (A) Ground level (B) Plinth level (C) Water table level (D) Midway ground level and water-table level

Description : In ordinary residential and public buildings, the damp proof course is generally provided at (A) Ground level (B) Plinth level (C) Water table level (D) Midway ground level and water-table level

Last Answer : Answer: Option B

You are measuring noise in a voice channel at 7 dB test point level. The meter reads -56 dBm (FIA weighted). What is the reading in dBrnc? A. 20 B. 32 C. 35 D. 25

Description : You are measuring noise in a voice channel at 7 dB test point level. The meter reads -56 dBm (FIA weighted). What is the reading in dBrnc? A. 20 B. 32 C. 35 D. 25

Last Answer : C. 35