Tag: fluids

Quizzes (14) Questions (63)

Questions Related to fluids

Multiple choice various types of barometer fluids physics
When atmospheric pressure increases, the rod present at the upper end of the metallic box of the Aneroid barometer

  1. gets elevated

  2. gets depressed

  3. remains static

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aneroid barometers are popular for their light weight and size which increases its portability. The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring which is corrugated in form of a diaphragm. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer.  When atmospheric pressure increases, the spring in upper end of box gets depressed and the reading is thus visible due to the elastic potential energy stored in the spring due to compression which pushes the diaphragm inside.

Multiple choice various types of barometer fluids physics
The flat spring present in Aneroid barometer

  1. Depresses the rod

  2. Elevates the rod

  3. Protects the diaphragm from collapsing

  4. Decreases the atmospheric pressure
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aneroid barometers are popular for their light weight and size which increases its portability. The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring which is corrugated in form of a diaphragm. Small changes in external air pressure cause the cell to expand or contract. 

Multiple choice various types of barometer fluids physics
Diaphragm is seen as a component of ........ barometer.

  1. Fortin

  2. Simple

  3. Aneroid

  4. None
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aneroid barometers are popular for their light weight and size which increases its portability. The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring which is corrugated in form of a diaphragm. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer.  Since it is calibrated directly for the atmospheric pressure, no prior adjustments are required to be made before its usage.

Multiple choice various types of barometer fluids physics
When atmospheric pressure decreases, the diaphragm of Aneroid barometer

  1. Bulges out

  2. Bulges in

  3. Get depressed

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aneroid barometers are popular for their light weight and size which increases its portability. The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring which is corrugated in form of a diaphragm. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer.  When atmospheric pressure increases, the spring in upper end of box gets depressed and the reading is thus visible due to the elastic potential energy stored in the spring due to compression.

When the pressure decreases, the diaphragm to which spring is attached bulges out, showing the reading in the opposite direction.

Multiple choice various types of barometer fluids physics
Mark the correct statement about Aneroid barometer.

  1. It is portable

  2. It is heavy in weight

  3. It cannot be fixed in any plane

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aneroid barometers are those barometers that do not use liquid to tell the atmospheric pressure. They are popular because of the portability due to their small weight and size.The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer. 

Multiple choice various types of barometer fluids physics


Barometer which is calibrated directly to read the atmospheric pressure is

  1. Aneroid barometer

  2. Fortin's barometer

  3. Simple barometer

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring. Since the instrument calibrated directly to read the atmospheric pressure, small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer. 

Multiple choice various types of barometer fluids physics
Barometer which do not require any prior adjustment for reading atmospheric pressure is

  1. Aneroid barometer

  2. Fortin barometer

  3. Simple barometer

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aneroid barometers are popular for their light weight and size which increases its portability. The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer.  


Since it is calibrated directly for the atmospheric pressure, no prior adjustments are required to be made before its usage.

Multiple choice various types of barometer fluids physics

Mark the correct statement about Aneroid barometer.

  1. It does not need any prior adjustment for reading atmospheric pressure.

  2. It is light in weight

  3. It is portable in nature

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Aneroid barometers are popular for their light weight and size which increases its portability. The Aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule). The evacuated capsule (or usually several capsules, stacked to add up their movements) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer.  Since it is calibrated directly for the atmospheric pressure, no prior adjustments are required to be made before its usage.
Multiple choice various types of barometer fluids physics

The measurement of altitude is known as

  1. Altimetry

  2. Altimeter

  3. barometry

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The instrument used to measure the altitude is known as altimeter whereas altimetry is defined as the measurement of altitude.

Multiple choice various types of barometer fluids physics
What is the advantage of negligible vapour pressure of mercury.

  1. It does not affect the barometric height

  2. It gives the correct reading

  3. It is easily seen while taking the reading

  4. All the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The surface of mercury is shiny and opaque. Therefore it is easily seen while taking the observation. The vapor pressure of mercury is negligible. Hence the barometric height is not affected. The mercury neither sticks nor wets the glass tube.