Tag: physics

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Questions Related to physics

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

The center of pressure of surface subjected to fluid pressure is the point

  1. on the surface at which resultant pressure acts

  2. on the surface at which gravitational force acts

  3. equal to volume of liquid displaced

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

The center of pressure of surface subjected to fluid pressure is the point on the surface at which gravitational force acts

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

Which of the following pump is preferred for flood control and irrigation applications?

  1. Centrifugal pumop

  2. Axial Flow pump

  3. Mixed flow pump

  4. Reciprocating pump
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The axial pump is a pump in which fluid flows axially to the rotation of the propeller. In Axial flow, the fluid flows parallel to the axis of rotation, as in a turbine. Axial flow pump contains a propeller or centrifugal impeller in the casing. Axial Flow pump is preferred for flood control and irrigation applications.

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

Slip of a reciprocating pump is defined as

  1. Difference of theoretical discharge and actual discharge

  2. ratio of actual discharge to theoretical discharge

  3. ratio of theoretical discharge to actual discharge

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

Slip of a reciprocating pump is defined as  Difference of theoretical discharge and actual discharge.


Hence, option A is correct.

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

An enclosed fluid under pressure exerts that pressure throughout its volume and against any surface containing it. Is the statement true or false

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is true that an enclosed fluid under pressure exerts that pressure throughout its volume and against any surface containing it.

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

In the vacuum suspended system, the brakes are applied when

  1. Atmospheric pressure is applied to one side of diaphram

  2. Vacuum is applied to both sides of diaphram

  3. Atmospheric pressure is applied to both sides of diaphram

  4. Vacuum is applied to one side of diaphram
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the vacuum suspended system, the brakes are applied when atmospheric pressure is applied to one side of diaphram.

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

When two cylinder with different size like larger and smaller are kept together then though the pressure is same in both, still the force required is more for larger cylinder. Due to increase in which property?

  1. Area

  2. height

  3. Weight

  4. Volume
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Force required        $F = PA$    

$\implies$    $F\propto A$                          $(\because P = constant)$
Thus option A is correct.