The zero atmospheric pressure is at (A) Sea level (B) Water table (C) Phreatic surface (D) Both (B) and (C) of the above

The zero atmospheric pressure is at
(A) Sea level
(B) Water table
(C) Phreatic surface
(D) Both (B) and (C) of the above
by

1 Answer

Answer :

(D) Both (B) and (C) of the above
by

Related questions

Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by the force of adhesion between liquid molecules c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

Description : Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by ... it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

Last Answer : c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions

Pick up the incorrect statement from the following: (A) Free surface ground water is subjected to atmospheric pressure (B) Water table surface rises and falls with seasons (C) Depth of water table is directly proportional to the rate of drawl of water (D) Level of water table remains stationary

Description : Pick up the incorrect statement from the following:  (A) Free surface ground water is subjected to atmospheric pressure  (B) Water table surface rises and falls with seasons  (C) ... directly proportional to the rate of drawl of water  (D) Level of water table remains stationary 

Last Answer : (D) Level of water table remains stationary 

A phreatic line is defined as the line within a dam section below which there are (A) Positive equipotential lines (B) Positive hydrostatic pressure (C) Negative hydrostatic pressure (D) Negative equipotential lines

Description : A phreatic line is defined as the line within a dam section below which there are (A) Positive equipotential lines (B) Positive hydrostatic pressure (C) Negative hydrostatic pressure (D) Negative equipotential lines

Last Answer : (B) Positive hydrostatic pressure

The atmospheric pressure at sea level is (A) 103 kN/m2 (B) 10.3 m of water (C) 760 mm of mercury (D) All of these

Description : The atmospheric pressure at sea level is (A) 103 kN/m2 (B) 10.3 m of water (C) 760 mm of mercury (D) All of these

Last Answer : Answer: Option D

Select the correct statement (A) Local atmospheric pressure depends upon elevation of locality only (B) Standard atmospheric pressure is the mean local atmospheric pressure a* sea level (C) Local atmospheric pressure is always below standard atmospheric pressure (D) A barometer reads the difference between local and standard atmospheric pressure

Description : Select the correct statement (A) Local atmospheric pressure depends upon elevation of locality only (B) Standard atmospheric pressure is the mean local atmospheric pressure a* sea level ... atmospheric pressure (D) A barometer reads the difference between local and standard atmospheric pressure

Last Answer : Answer: Option B

Which one of the following statements is correct? (a) Local atmospheric pressure is always lesser than standard atmospheric pressure (b) Local atmospheric pressure depends upon the elevation of the locality only (c) Standard atmospheric pressure is the mean atmospheric pressure at sea level (d) A barometer reads the difference between local, and standard atmospheric pressure

Description : Which one of the following statements is correct? (a) Local atmospheric pressure is always lesser than standard atmospheric pressure (b) Local atmospheric pressure depends upon the elevation of ... sea level (d) A barometer reads the difference between local, and standard atmospheric pressure

Last Answer : (c) Standard atmospheric pressure is the mean atmospheric pressure at sea level

The phreatic line in an earth dam may be (A) Circular (B) Elliptical (C) Parabolic (D) A straight line

Description : The phreatic line in an earth dam may be (A) Circular (B) Elliptical (C) Parabolic (D) A straight line

Last Answer : Option C

Explain with neat sketch Phreatic line in earthen dam with pressure head at different point and show construction points of this line.

Description : Explain with neat sketch Phreatic line in earthen dam with pressure head at different point and show construction points of this line. 

Last Answer : Procedure for locating the Phreatic line i) Draw an earthen dam having upstream face AB with water surface. ii) On water surface measure distance BC = 0.3 L C is starting pt of base parabola. Let F' ... parabola i.e. Phreatic line. viii) Here G,Q1,Q2,Q3,Q4 and B represent Phreatic line 

The surface of zero elevation around the earth, which is slightly irregular and curved, is known as (A) Mean sea level (B) Geoid surface (C) Level surface (D) Horizontal surface

Description : The surface of zero elevation around the earth, which is slightly irregular and curved, is known as (A) Mean sea level (B) Geoid surface (C) Level surface (D) Horizontal surface

Last Answer : (B) Geoid surface

what is the atmospheric pressure at sea level?

Description : what is the atmospheric pressure at sea level?

Last Answer : At STP it is 1 bar

What fraction of atmospheric pressure at sea level is atmospheric at La Paz?

Description : What fraction of atmospheric pressure at sea level is atmospheric at La Paz?

Last Answer : Feel Free to Answer

Standard air is the: a. Mass of 1 cubic meter of dry air at 20°C and atmospheric pressure b. Mass of a cubic meter of air at atmospheric conditions c. Volume of air at ambient temperature and atmospheric pressure d. Volume of 1 kg of dry air at 21°C and atmospheric pressure at sea level or 101.325 kPa e. Volume of 1 kg of air at 15°C and 100 kPa

Description : Standard air is the: a. Mass of 1 cubic meter of dry air at 20°C and atmospheric pressure b. Mass of a cubic meter of air at atmospheric conditions c. Volume of air at ambient temperature and atmospheric pressure ... pressure at sea level or 101.325 kPa e. Volume of 1 kg of air at 15°C and 100 kPa

Last Answer : Answer: D

10. In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water. A) Correct B) Incorrect

Description : 10. In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water. A) Correct B) Incorrect

Last Answer : A

Explain phreatic line in earthen dam with a sketch.

Description : Explain phreatic line in earthen dam with a sketch.

Last Answer : Phreatic line in earthen dam1.The line in earthen dam section below which there is positive hydrostatic pressure exists. Phreatic line separates the dry and wet part of earthen dam body as it acts as boundry ... toe material. Hence, a rock toe is necessary to avoid removal of toe portion of dam. 

Define permeability and Phreatic Line

Description : Define permeability and Phreatic Line

Last Answer : Permeability  “It is defined as the properly of soli which permits the seepage of fluid through interconnecting voids under gravity  Phreatic Line: The topmost seepage line in an earthen dam at which hydrostatic pressure is zero, is called as Phreatic line.

If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm", the pressure at a depth of 50 m below the oil surface will be (A) 2 meters of water column (B) 3 meters of water column (C) 5 meters of water column (D) 6 meters of water Column

Description : If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm", the pressure at a depth of 50 m below the oil surface will be (A) 2 meters of water column (B) 3 meters of water column (C) 5 meters of water column (D) 6 meters of water Column

Last Answer : Answer: Option D

Rain drops are spherical because of (A) Viscosity (B) Air resistance (C) Surface tension forces (D) Atmospheric pressure

Description : Rain drops are spherical because of (A) Viscosity (B) Air resistance (C) Surface tension forces (D) Atmospheric pressure

Last Answer : Answer: Option C

Surface energy per unit area of a surface is numerically equal to (A) Atmospheric pressure (B) Surface tension (C) Force of adhesion (D) Force of cohesion

Description : Surface energy per unit area of a surface is numerically equal to (A) Atmospheric pressure (B) Surface tension (C) Force of adhesion (D) Force of cohesion

Last Answer : Answer: Option B

Pick up the correct statement from the following: (A) The tides at any place occur a little less than 1 hour later, each succeeding day (B) The influence of the earth's gravity alone produces level-tidal less sea (C) The spinning force is maximum at the equator and zero at the poles (D) All of the above

Description : Pick up the correct statement from the following: (A) The tides at any place occur a little less than 1 hour later, each succeeding day (B) The influence of the earth's gravity alone produces level-tidal ... ) The spinning force is maximum at the equator and zero at the poles (D) All of the above

Last Answer : (D) All of the above

Absolute zero pressure will occur  (a) at sea level  (b) at the center of the earth  (c) when molecular momentum of the system becomes zero  (d) under vacuum conditions  (e) at a temperature of – 273 °K

Description : Absolute zero pressure will occur  (a) at sea level  (b) at the center of the earth  (c) when molecular momentum of the system becomes zero  (d) under vacuum conditions  (e) at a temperature of – 273 °K

Last Answer : Answer : c

People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude (a) people eat more nutritive food, therefore more RBCs are formed (b) people get pollution-free air to breath and more oxygen is available (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive

Pick up the correct statement from the following: (A) For nautical purposes, low water level is generally referred to by the navigators (B) The depth of the bed of the sea from the surface of water is called sounding (C) The contour lines on the bed of a water body are called fathoms (D) All the abov

Description : Pick up the correct statement from the following: (A) For nautical purposes, low water level is generally referred to by the navigators (B) The depth of the bed of the sea from the surface of water is ... (C) The contour lines on the bed of a water body are called fathoms (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) The regular periodic rise and fall of the surface of the sea, is called tide (B) The average difference in water level between high tide and low tide at a place, is called tidal range (C) The movement of water caused by the action of tide, is called a tidal current (D) all of the above

Description : Pick up the correct statement from the following: (A) The regular periodic rise and fall of the surface of the sea, is called tide (B) The average difference in water level between high tide and low tide ... of water caused by the action of tide, is called a tidal current (D) all of the above

Last Answer : (D) all of the above

The variation of atmospheric potential is caused due to: (A) Difference in temperature over the surface of the earth (B) Change in the density of air (C) Both (a) and (b) (D) Neither (a) nor (b)

Description : The variation of atmospheric potential is caused due to: (A) Difference in temperature over the surface of the earth (B) Change in the density of air (C) Both (a) and (b) (D) Neither (a) nor (b)

Last Answer : (C) Both (a) and (b)

Pick up the correct statement from the following: (A) The water level in a still well, represents the ground water table level (B) The difference between water table level and the water level in a well after pumping, is called depression head (C) The surface of water table surrounding a well during pumping, forms a cone of depression (D) All the above

Description : Pick up the correct statement from the following:  (A) The water level in a still well, represents the ground water table level  (B) The difference between water table level and the water ... water table surrounding a well during pumping, forms a cone of depression  (D) All the above 

Last Answer : (D) All the above 

The isobars drawn on a surface weather chart represent lines of equal pressure: a. At flight level b. At height of observatory c. At a determined density altitude d. Reduced to sea level

Description : The isobars drawn on a surface weather chart represent lines of equal pressure:  a. At flight level  b. At height of observatory  c. At a determined density altitude  d. Reduced to sea level

Last Answer : d. Reduced to sea level

The isobars drawn on a surface weather chart represent lines of equal pressure: a. At flight level b. At height of observatory c. At a determined density altitude d. Reduced to sea level

Description : The isobars drawn on a surface weather chart represent lines of equal pressure: a. At flight level b. At height of observatory c. At a determined density altitude d. Reduced to sea level

Last Answer : d. Reduced to sea level

If the water table rises upto ground surface, then the (A) Effective stress is reduced due to decrease in total stress only but pore water pressure does not change (B) Effective stress is reduced due to increase in pore water pressure only but total stress does not change (C) Total stress is reduced due to increase in pore water pressure only but effective stress does not change (D) Total stress is increased due to decrease in pore water pressure but effective stress does not change

Description : If the water table rises upto ground surface, then the (A) Effective stress is reduced due to decrease in total stress only but pore water pressure does not change (B) Effective stress is ... D) Total stress is increased due to decrease in pore water pressure but effective stress does not change

Last Answer : (B) Effective stress is reduced due to increase in pore water pressure only but total stress does not change

Rise of water table above the ground surface causes (A) Equal increase in pore water pressure and total stress (B) Equal decrease in pore water pressure and total stress (C) Increase in pore water pressure but decrease in total stress (D) Decrease in pore water pressure but increase in total stress

Description : Rise of water table above the ground surface causes (A) Equal increase in pore water pressure and total stress (B) Equal decrease in pore water pressure and total stress (C) Increase in ... pressure but decrease in total stress (D) Decrease in pore water pressure but increase in total stress

Last Answer : Answer: Option A

The vapour pressure over the concave surface is (A) Less man the vapour pressure over the plane surface (B) Equal to the vapour pressure over the plane surface (C) Greater than the vapour pressure over the plane surface (D) Zero

Description : The vapour pressure over the concave surface is (A) Less man the vapour pressure over the plane surface (B) Equal to the vapour pressure over the plane surface (C) Greater than the vapour pressure over the plane surface (D) Zero

Last Answer : Answer: Option A

Pick up the incorrect statement from the following: (A) The smaller the size of the pores, the higher the water can rise above the water table (B) Below the water table, the pore water may be static (C) The hydrostatic pressure depends on the depth below the water level (D) None of these

Description : Pick up the incorrect statement from the following: (A) The smaller the size of the pores, the higher the water can rise above the water table (B) Below the water table, the pore water may be static (C) The hydrostatic pressure depends on the depth below the water level (D) None of these

Last Answer : Answer: Option D

Which one of the following helps to identify the objects on the earth surface? (A) Atmospheric window (B) Signature (C) Radiometric error (D) None of these

Description : Which one of the following helps to identify the objects on the earth surface? (A) Atmospheric window (B) Signature (C) Radiometric error (D) None of these

Last Answer : Answer: Option B

A falling drop of rain water ac-quires the spherical shape due to – (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force

Description : A falling drop of rain water ac-quires the spherical shape due to – (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force

Last Answer : (2) Surface Tension Explanation: Raindrops start out as round high in the atmosphere as water collects on dust and smoke particles in clouds. But as raindrops fall, they lose their rounded ... the molecules stick together. The cause is the weak hydrogen bonds that occur between water molecules.

Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Description : Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Last Answer : (C) Saturated vapour pressure equals the external pressure on its surface

A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by the atmosphere on the surface of water is A. 20 kN B. 50 kN C. 100 kN D. 200 kN

Description : A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by ... of water is A. 20 kN B. 50 kN C. 100 kN D. 200 kN

Last Answer : 200 kN

A falling drop of rain water acquires the spherical shape due to (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force

Description : A falling drop of rain water acquires the spherical shape due to (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force 

Last Answer : Surface Tension

A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct? (A) The pressure on the wall at the liquid level is minimum(B) The pressure on the bottom of the wall is maximum (C) The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum (D) The pressure on the bottom of the wall is zero

Description : A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct? (A) The pressure on the wall at the liquid level is maximum (B) ... and on the bottom of the wall is maximum (D) The pressure on the bottom of the wall is zero

Last Answer : Answer: Option C

When a river’s water level reaches 10 metres, this means that: (a) the water level is 10 metres above an arbitrary ‘zero’ level (b) the water level is 10 metres above mean sea level (c) the water level is 10 metres above mean sea level or an arbitrary 'zero' level (d) it will flood.

Description : When a river’s water level reaches 10 metres, this means that: (a) the water level is 10 metres above an arbitrary ‘zero’ level (b) the water level is 10 metres above mean sea level (c) the water level is 10 metres above mean sea level or an arbitrary 'zero' level (d) it will flood.

Last Answer : (c) the water level is 10 metres above mean sea level or an arbitrary 'zero' level

What is the atmospheric pressure on the earth's surface ?

Description : What is the atmospheric pressure on the earth's surface ?

Last Answer : Atmospheric pressure on the Earth's surface is about `10 ^ 5N` per square meter

How does the last amount of liquid in a straw get into your mouth when the cup is empty and there is no more surface liquid for atmospheric pressure to work on forcing the liquid up the straw?

Description : How does the last amount of liquid in a straw get into your mouth when the cup is empty and there is no more surface liquid for atmospheric pressure to work on forcing the liquid up the straw?

Last Answer : Air pressure within the straw.

Consider the following places: 2. Shimla 3. Gangtok 4. Mumbai 5. Delhi Arrange these places in decreasing order of their atmospheric pressure on their ground surface using the codes given below: [CDS 2002] (a) 3, 4, 1, 2 (b) 4, 3, 2, 1 (c) 3, 1, 4, 2 (d) 2, 4, 1, 3

Description : Consider the following places: 2. Shimla 3. Gangtok 4. Mumbai 5. Delhi Arrange these places in decreasing order of their atmospheric pressure on their ground surface using the codes given below: [CDS 2002] (a) 3, 4, 1, 2 (b) 4, 3, 2, 1 (c) 3, 1, 4, 2 (d) 2, 4, 1, 3

Last Answer : Ans: (b)

What type of pressure cannot be used for Boyle’s Law?  a. Atmospheric Pressure  b. Gauge Pressure  c. Surface Pressure  d. Isobaric Pressure

Description : What type of pressure cannot be used for Boyle’s Law?  a. Atmospheric Pressure  b. Gauge Pressure  c. Surface Pressure  d. Isobaric Pressure

Last Answer : Gauge Pressure

_________ is defined as that equivalent to the pressure due to a column of mercury 76cm long.  a. surface pressure  b. gage pressure  c. standard atmospheric pressure  d. isobaric pressure

Description : _________ is defined as that equivalent to the pressure due to a column of mercury 76cm long.  a. surface pressure  b. gage pressure  c. standard atmospheric pressure  d. isobaric pressure

Last Answer : standard atmospheric pressure

Suction lift of a pump depends upon (A) Atmospheric pressure (B) Water temperature (C) Velocity of water in suction pipe (D) All the above

Description : Suction lift of a pump depends upon  (A) Atmospheric pressure  (B) Water temperature  (C) Velocity of water in suction pipe  (D) All the above 

Last Answer : (D) All the above 

01. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure. A) Agree B) Disagree

Description : 01. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure. A) Agree B) Disagree

Last Answer : Option A

Barometer is used to measure (A) Velocity of liquid(B) Atmospheric pressure (C) Pressure in pipes and channels (D) Difference of pressure between two points in a pipe

Description : Barometer is used to measure (A) Velocity of liquid (B) Atmospheric pressure (C) Pressure in pipes and channels (D) Difference of pressure between two points in a pipe

Last Answer : Answer: Option B

When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called (A) Gauge pressure (B) Absolute pressure (C) Positive gauge pressure (D) Vacuum pressure

Description : When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called (A) Gauge pressure (B) Absolute pressure (C) Positive gauge pressure (D) Vacuum pressure

Last Answer : Answer: Option C

A manometer is used to measure (A) Low pressure (B) Moderate pressure (C) High pressure (D) Atmospheric pressure

Description : A manometer is used to measure (A) Low pressure (B) Moderate pressure (C) High pressure (D) Atmospheric pressure

Last Answer : Answer: Option C

Manometer is used to measure (A) Pressure in pipes, channels etc. (B) Atmospheric pressure (C) Very low pressure (D) Difference of pressure between two points

Description : Manometer is used to measure (A) Pressure in pipes, channels etc. (B) Atmospheric pressure (C) Very low pressure (D) Difference of pressure between two points

Last Answer : Answer: Option A

Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure. (A) Plus (B) Minus (C) Divide (D) Multiply

Description : Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure. (A) Plus (B) Minus (C) Divide (D) Multiply

Last Answer : Answer: Option B