Tag: pressure in fluids and atmospheric pressure

Questions Related to pressure in fluids and atmospheric pressure

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


Correct Option: B
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.

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


Correct Option: A
Explanation:

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


Hence, option A is correct.

jacks can be categorized based on which types of forces from below

  1. Mechanical and hydraulic

  2. Mechanical and kinetic

  3. Kinetic and potential

  4. Hydraulic and rotational


Correct Option: A
Explanation:

Jacks can be categorized based on mechanical and hydraulic forces.

The shaft in floor jack is vertical. Is the statement true or false

  1. True

  2. False


Correct Option: B
Explanation:

The shaft in the floor jack is horizontal. Hence option B is correct.

What does hydraulic jacks use to move oil through two cylinders?

  1. Pipe

  2. Wheel

  3. Pump Plunger

  4. Tube


Correct Option: C
Explanation:

Hydraulic jacks use pump plungers to move oil through two cylinders.

How many commonly used hydraulic jacks are available?

  1. 3

  2. 4

  3. 2

  4. 1


Correct Option: C
Explanation:

Two types of hydraulic jacks are commonly used- bottle jacks and floor jacks.

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


Correct Option: B
Explanation:

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

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


Correct Option: A
Explanation:

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

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


Correct Option: A
Explanation:

Force required        $F = PA$    

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

In a vacuum suspended unit, when the brakes are on , the piston and diaphragm has on both sides of it

  1. Atmospheric pressure

  2. Vacuum

  3. Hydraulic pressure

  4. Air pressure


Correct Option: A
Explanation:

In a vacuum suspended unit, when the brakes are on , the piston and diaphragm has on both sides of it Atmospheric pressure.