Ventilators are provided near the ceiling of the room because – (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Ventilators are provided near the ceiling of the room because – (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part
by

1 Answer

Answer :

(1) the exhaled warmer air rises up and goes out Explanation: Ventilation is a room air distribution strategy where conditioned outdoor air is supplied at floor level and extracted above the occupied zone, usually at ceiling height. A typical displacement ventilation system, such as one in an office space, supplies conditioned cool air from an air handling unit (AHU) through a low induction diffuser. The cool air spreads through the floor of the space and then rises as the air warms due to heat exchange with heat sources in the space (e.g., occupants, computers, lights).
by
selected

Related questions

Ventilators are provided near the ceiling of the room because (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Description : Ventilators are provided near the ceiling of the room because (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Last Answer : the exhaled warmer air rises up and goes out

Regarding battery charging rooms, ventilation should be provided __________. A. at the lowest point of the room B. horizontally near the batteries C. at the highest point of the room D. only when charging is in progress

Description : Regarding battery charging rooms, ventilation should be provided __________. A. at the lowest point of the room B. horizontally near the batteries C. at the highest point of the room D. only when charging is in progress

Last Answer : Answer: C

Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

Description : Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

Last Answer : mud is a bad conductor

Does using a ceiling fan make a hot room warmer or cooler?

Description : Does using a ceiling fan make a hot room warmer or cooler?

Last Answer : the air it’s blowing might be hot but the wind it creates blows your body heat away from your body making you feel cooler I think

Why are there jets in the midlatitudes in the upper troposphere? (a) Air is warmer in the tropics than the poles, resulting in a poleward pressure gradient that increases with increasing height. (b) Because air near the surface experiences the drag of surface friction, while air in the upper troposphere does not. (c) Due to variations in temperature between continents and ocean. (d) Due to the constant bending by the Coriolis force. (e) Both A and D are correct.

Description : Why are there jets in the midlatitudes in the upper troposphere? (a) Air is warmer in the tropics than the poles, resulting in a poleward pressure gradient that increases with increasing height. (b) Because ... d) Due to the constant bending by the Coriolis force. (e) Both A and D are correct.

Last Answer : (e) Both A and D are correct.

Why are ventilation for a room put near the roof and not near the floor?

Description : Why are ventilation for a room put near the roof and not near the floor?

Last Answer : This allow cool air to enter into the room.

Why is the warmest part of the room near the ceiling?

Description : Why is the warmest part of the room near the ceiling?

Last Answer : What is the answer ?

Airmass near to the earth's surface is warmer because it – (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun

Description : Airmass near to the earth's surface is warmer because it – (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun

Last Answer : (3) is warmed by terrestrial radiation Explanation: The air close to the ground is warmer because the earth's surface is what heats the atmosphere, for the most part. Terrestrial radiation accounts for ... Earth's surface. The further away from the earth's surface we go, the cooler the atmosphere.

Airmass near to the earth’s surface is warmer because it (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun

Description : Airmass near to the earth’s surface is warmer because it (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun

Last Answer : is warmed by terrestrial radiation

Which of the listed safety features should be provided in small rooms or lockers where batteries are stored? A. Installation of a fixed CO2 system. B. An exhaust duct is to be provided and led from within three inches of the deck. C. Power ventilation is to be provided if trickle charging is utilized. D. An exhaust duct is to be provided and led from the top of the locker to the open air.

Description : Which of the listed safety features should be provided in small rooms or lockers where batteries are stored? A. Installation of a fixed CO2 system. B. An exhaust duct is to be provided and led from within ... An exhaust duct is to be provided and led from the top of the locker to the open air.

Last Answer : Answer: D

When a person walking in bright Sunlight enters a dark room, he is not able to see clearly for a little while because (1) the eye muscles cannot immediately adjust the focal length of the eye lens. (2) the retina retains the bright images for sometime and becomes momentarily insensitive. (3) the iris is unable to contract the pupil immediately. (4) the iris is unable to dilate the pupil immediately.

Description : When a person walking in bright Sunlight enters a dark room, he is not able to see clearly for a little while because (1) the eye muscles cannot immediately adjust the focal length of the eye ... is unable to contract the pupil immediately. (4) the iris is unable to dilate the pupil immediately.

Last Answer : the iris is unable to dilate the pupil immediately.

In the illustration, the purpose of part B is to _________. EL-0033 A. increase resistance in series with the contacts as they close to prevent arcing B. create a magnetic field in the steel plates that interacts with the arc to cool and extinguish the arc C. cause the contacts to open in the event of an overload D. provide ventilation to the contact when the breaker is close to rated capacity

Description : In the illustration, the purpose of part B is to _________. EL-0033 A. increase resistance in series with the contacts as they close to prevent arcing B. create a magnetic field in the steel ... event of an overload D. provide ventilation to the contact when the breaker is close to rated capacity

Last Answer : Answer: B

Two contributors of electronic console failures are heat and vibration. To combat some of their effects, preventive maintenance procedures should include ______________. A. systematic rotation of circuit cards with those from spares to allow component cooling B. periodic changing or cleaning of console ventilation and control room air conditioning filters C. weekly tightening of console foundation bolts and changing of the air in the control room D. all of the above

Description : Two contributors of electronic console failures are heat and vibration. To combat some of their effects, preventive maintenance procedures should include ______________. A. systematic rotation of circuit cards with those ... bolts and changing of the air in the control room D. all of the above

Last Answer : Answer: B

What is the concentration of oxygen in air exhaled?

Description : What is the concentration of oxygen in air exhaled?

Last Answer : Need answer

What is the differences between inhaled air and exhaled air?

Description : What is the differences between inhaled air and exhaled air?

Last Answer : Inhaled air contains a greater volume of oxygen than carbondioxide. Exhaled air is the opposite, since after the exchange ofgases in the lungs the carbon dioxide in the blood is transferredinto the ... of carbondioxide than oxygen. Also, there is more water vapour in exhaledair than inhaled air.

Per cent oxygen in the exhaled air is (a) 0 (b) 6 (c) 12 (d) 16

Description : Per cent oxygen in the exhaled air is (a) 0 (b) 6 (c) 12 (d) 16

Last Answer : Ans:(a)

Which respiratory volume is the maximum volume of air that can be inhaled after maximal expiration? a) Inspiratory reserve volume Inspiratory reserve volume is normally 3000 mL. b) Tidal volume Tidal volume is the volume of air inhaled and exhaled with each breath. c) Expiratory reserve volume Expiratory reserve volume is the maximum volume of air that can be exhaled forcibly after a normal exhalation. d) Residual volume Residual volume is the volume of air remaining in the lungs after a maximum exhalation.

Description : Which respiratory volume is the maximum volume of air that can be inhaled after maximal expiration? a) Inspiratory reserve volume Inspiratory reserve volume is normally 3000 mL. b) Tidal volume Tidal ... volume Residual volume is the volume of air remaining in the lungs after a maximum exhalation.

Last Answer : a) Inspiratory reserve volume Inspiratory reserve volume is normally 3000 mL.

Do people with lung cancer often need home ventilators?

Description : Do people with lung cancer often need home ventilators?

Last Answer : In lung cancer the effective surface area reduces, leading to breathlessness. Actually human lungs have lot of spare capacity. A person can lead normal life even one lung is completely removed. All the same those who are suffering from extreme condtions are likely to need home ventilator.

The item of steel work which is measured in sq.m, is (A) Collapsible gates (B) Rolling shutters (C) Ventilators and glazing (D) All the above

Description : The item of steel work which is measured in sq.m, is (A) Collapsible gates (B) Rolling shutters (C) Ventilators and glazing (D) All the above

Last Answer : (D) All the above

Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Last Answer : reflect back the heat given by earth

Why two thin shirts can keep us warmer than a single thick shirt in winter ? (1) Two thin shirts become thicker so prevent transmission of heat (2) Air layer between two shirts works as good conductor (3) Air layer between two shirts behaves like insulating media (4) No radiation of heat takes place

Description : Why two thin shirts can keep us warmer than a single thick shirt in winter ? (1) Two thin shirts become thicker so prevent transmission of heat (2) Air layer between two shirts works as good conductor (3) Air layer between two shirts behaves like insulating media (4) No radiation of heat takes place

Last Answer : Air layer between two shirts behaves like insulating media

Is a place near the ocean warmer or cooler than inland?

Description : Is a place near the ocean warmer or cooler than inland?

Last Answer : Need answer

After the sun rises, rapid heating of the air over the land compared to that over the ocean often causes of near surface air over the land. (a) Localized subsidence and high pressure. (b) Localized convection and high pressure. (c) Localized subsidence and low pressure. (d) Localized convection and low pressure.

Description : After the sun rises, rapid heating of the air over the land compared to that over the ocean often causes of near surface air over the land. (a) Localized subsidence and high pressure. (b ... and high pressure. (c) Localized subsidence and low pressure. (d) Localized convection and low pressure.

Last Answer : (d) Localized convection and low pressure.

Which of the following problems is indicated if a lead-acid battery begins to gas violently when it is first placed on charge? A. Insufficient compartment ventilation is being provided. B. A short circuit exists in one of the battery cells. C. The battery is undergoing its normal charging rate. D. An excessive charging rate is being applied to the battery.

Description : Which of the following problems is indicated if a lead-acid battery begins to gas violently when it is first placed on charge? A. Insufficient compartment ventilation is being provided. B. A short ... undergoing its normal charging rate. D. An excessive charging rate is being applied to the battery.

Last Answer : Answer: D

If an air parcel is warmer than the air at the specified altitude then the parcel will continue to rise because warmer air is less dense and therefore buoyant. This condition best describes what?

Description : If an air parcel is warmer than the air at the specified altitude then the parcel will continue to rise because warmer air is less dense and therefore buoyant. This condition best describes what?

Last Answer : Need answer

Air over the oceans is colder in summer and warmer in winter compared with air over the continental regions. This is because (a) Water is translucent and has a relatively high heat capacity compared to dirt (b) Compared to dirt, a thicker layer of water participates in the seasonal cycle (c) The albedo of water is greater than that of land and thus reflects more solar radiation (d) Both A and B are true (e) The effect is due to the changes in circulation between continents and oceans

Description : Air over the oceans is colder in summer and warmer in winter compared with air over the continental regions. This is because (a) Water is translucent and has a relatively high heat capacity compared ... B are true (e) The effect is due to the changes in circulation between continents and oceans

Last Answer : (d) Both A and B are true

Pick up the consideration to the taken while designing a hospital from the following: (A) The operation theatre unit to be detached as it requires sterilized zone but near the ward for the patients and doctor (B) The mortuary should be detached from the main circulation with a post-mortem room (C) Casualty unit should be provided a separate entrance (D) All the above

Description : Pick up the consideration to the taken while designing a hospital from the following: (A) The operation theatre unit to be detached as it requires sterilized zone but near the ward for the patients ... post-mortem room (C) Casualty unit should be provided a separate entrance (D) All the above

Last Answer : Answer: Option D

Air-Vac Cleaning systems rents a stand in a shopping centre. Passers by are asked to register for a draw for a free ventilation evaluation. This contest is part of Air -Vac's: A)sales promotion efforts. B)advertising campaign. C)personal selling programme. D)corporate publicity

Description : Air-Vac Cleaning systems rents a stand in a shopping centre. Passers by are asked to register for a draw for a free ventilation evaluation. This contest is part of Air -Vac's: A)sales promotion efforts. B)advertising campaign. C)personal selling programme. D)corporate publicity

Last Answer : A)sales promotion efforts

What causes the temperatures in the lower troposphere to be warmer?

Description : What causes the temperatures in the lower troposphere to be warmer?

Last Answer : What is the answer ?

When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye lens (b) The retina retains the bright images for some time and becomes momentarily insensitive (c) The iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Description : When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye ... iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Last Answer : Ans:(d)

The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Description : The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Last Answer : (2) Sneezing Explanation: PM-10 is a particulate matter having an aerodynamic diameter of less than 10 gym. Particles larger than 10 microns tend to be filtered out in the nose and therefore do not enter the respiratory tract. 926.

The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Description : The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Last Answer : Sneezing

What waste product exhaled from the lungs?

Description : What waste product exhaled from the lungs?

Last Answer : What is the answer ?

How is carbon dioxide removed from blood before it is exhaled?

Description : How is carbon dioxide removed from blood before it is exhaled?

Last Answer : In humans, carbon dioxide is generated in the tissues during oxidation of glucose, in order to liberate energy, which is resumed to perform body functions. Before exhalation through lungs the gas is transported ... than the tissue capillaries. Nearly 23 per cent of CO{-2} is transported this way.

(3) checking the penetration of ultra-violet rays to the earth Explanation: Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. This ozone UV absorption is important to life, since it extends the absorption of UV by ordinary oxygen and nitrogen in air (which absorbs all wavelengths < 200 nm) through the lower UV-C (200 nm-280 nm) and the entire UV-B band (280 nm-315 nm).

Description : (3) checking the penetration of ultra-violet rays to the earth Explanation: Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. This ... the lower UV-C (200 nm-280 nm) and the entire UV-B band (280 nm-315 nm).

Last Answer : The advantage of detergents over soaps is – (1) Detergents are soluble in water (2) Detergents could not give much lather (3) Detergents give lather even with hard water (4) Soaps give lather with only soft water

(3) checking the penetration of ultra-violet rays to the earth Explanation: Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. This ozone UV absorption is important to life, since it extends the absorption of UV by ordinary oxygen and nitrogen in air (which absorbs all wavelengths < 200 nm) through the lower UV-C (200 nm-280 nm) and the entire UV-B band (280 nm-315 nm).

Description : (3) checking the penetration of ultra-violet rays to the earth Explanation: Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. This ... the lower UV-C (200 nm-280 nm) and the entire UV-B band (280 nm-315 nm).

Last Answer : The advantage of detergents over soaps is – (1) Detergents are soluble in water (2) Detergents could not give much lather (3) Detergents give lather even with hard water (4) Soaps give lather with only soft water

A ball bounces higher at high altitudes than in plains. This is because (a) the pressure on higher altitudes is lower than that in plains (b) Downward pull due to gravity is less at higher altitudes (c) The rarefied air offers less resistance to the ball (d) You become more energetic at hills, so greater the force applied, higher goes the ball.

Description : A ball bounces higher at high altitudes than in plains. This is because (a) the pressure on higher altitudes is lower than that in plains (b) Downward pull due to gravity is less at higher altitudes ... ball (d) You become more energetic at hills, so greater the force applied, higher goes the ball.

Last Answer : Ans:(a)

Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Description : Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Last Answer : (4) Of the capillary action phenomenon Explanation: It is because of the capillary action phenomenon because of which oil rise up the wick in a lamp. Capillary action, or capillarity, is the ability ... such as paper, in some nonporous materials such as liquefied carbon fiber, or in a cell.

Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Description : Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Last Answer : Of the capillary action phenomenon

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because – (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because - (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : (3) metals are good conductors of heat Explanation: On a chilly day, the room temperature is lower than our body temperature. Since metals have a higher coefficient of thermal conductivity than plastic, they ... from our fingers will flow to the metal cap much more quickly than to the plastic body.

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : metals are good conductors of heat

When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as (A) Steady flow (B) Turbulent flow (C) Vortex flow

Description : When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as (A) Steady flow (B) Turbulent flow (C) Vortex flow

Last Answer : Answer: Option C

Tea and Coffee are perfect substitute of each other, given the price of Tea and Coffee being `100 and `200 per Kg. a consumer is prepared to buy 3 Kg. of each. If the price of tea remain same and the price of Coffee rises to `400 per kg. the demand for Tea goes to 6 Kg. and that of Coffee falls to 1Kg. The elasticity of substitution between Tea and Coffee is (a) 1 ; (b) 4 ; (c) 5 ; (d) 3

Description : Tea and Coffee are perfect substitute of each other, given the price of Tea and Coffee being `100 and `200 per Kg. a consumer is prepared to buy 3 Kg. of each. If the price of tea remain same and the price of ... elasticity of substitution between Tea and Coffee is (a) 1 ; (b) 4 ; (c) 5 ; (d) 3

Last Answer : (c) 5 ;

Capacity utilization - (1) is usually near 100 percent. (2) represents the percent of the labour force that is employed. (3) is a measure of the proportional of the existing capital stock used for current production. (4) rises as the economy moves into a recession, since firms must replace unemployed workers with some other resources to maintain production.

Description : Capacity utilization - (1) is usually near 100 percent. (2) represents the percent of the labour force that is employed. (3) is a measure of the proportional of the existing capital ... into a recession, since firms must replace unemployed workers with some other resources to maintain production.

Last Answer : (3) is a measure of the proportional of the existing capital stock used for current production. Explanation: Capacity utilisation refers to the extent or level to which the productive capacity of a ... as a percentage, it is computed by dividing the total capacity with the portion being utilized.

Capacity utilisation (1) is usually near 100 percent. (2) represents the percent of the labour force that is employed. (3) is a measure of the proportional of the existing capital stock used for current production. (4) rises as the economy moves into a recession, since firms must replace unemployed workers with some other resources to maintain production.

Description : Capacity utilisation (1) is usually near 100 percent. (2) represents the percent of the labour force that is employed. (3) is a measure of the proportional of the existing capital ... into a recession, since firms must replace unemployed workers with some other resources to maintain production.

Last Answer : is a measure of the proportional of the existing capital stock used for current production.

A twin goes on a high speed space journey (near the speed of light) and returns to meet his twin who stayed on earth. At their meeting the traveling twin has: w) aged more than the earthbound twin x) aged less than the earthbound twin y) aged the same as the earthbound twin

Description : A twin goes on a high speed space journey (near the speed of light) and returns to meet his twin who stayed on earth. At their meeting the traveling twin has: w) aged more than the earthbound twin x) aged less than the earthbound twin y) aged the same as the earthbound twin

Last Answer : ANSWER: X -- AGED LESS THAN THE EARTHBOUND TWIN 

During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than the eastern region (c) hills do not form barriers for winds (d) the area is far away from the sea

Description : During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than ... (c) hills do not form barriers for winds (d) the area is far away from the sea

Last Answer : Ans: (a)

A large iceberg melts at the base, but not at the top, because of the reason that (A) Ice at the base contains impurities which lowers its melting point (B) Due to the high pressure at the base, its melting point reduces (C) The iceberg remains in a warmer condition at the base (D) All (A), (B) and (C)

Description : A large iceberg melts at the base, but not at the top, because of the reason that (A) Ice at the base contains impurities which lowers its melting point (B) Due to the high pressure at the base, its melting point ... C) The iceberg remains in a warmer condition at the base (D) All (A), (B) and (C)

Last Answer : (B) Due to the high pressure at the base, its melting point reduces