Applications of pascals law - class-XI
Description: applications of pascals law | |
Number of Questions: 46 | |
Created by: Naresh Verma | |
Tags: properties of bulk matter mechanical properties of fluids floating bodies fluid pressure forces in fluids pressure fluids properties of matter physics pressure in fluids and atmospheric pressure |
State the principle on which a hydraulic press works.
The principle of fluid pressure that is used in hydraulic brakes or lifts is that.
In a hydraulic lift, used at a service station the radius of the large and small piston are in the ratio of 20 : 1. What weight placed on the small piston will be sufficient to lift a car of mass 1500 kg ?
Hydraulic press is based upon :-
The working of hydraulic brakes is based on $Pascal's \ law.$
.......................... is used to lift or support heavy objects and work on Pascal's law.
A mechanical machine which is used to lift or compress large loads.
................ works on the Pascal's law and is used in automobiles.
The pump tube of hydraulic press is of cross section area $a$ and is connected with a press tube of cross section area $A$ such that :
Discharge of centrifugal pump is
Hydraulic jacks works on which principle from below?
Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.
The greater the differences in the areas of the cylinders, the greater the force output of the big cylinder for hydraulic jack. Fill in the gap
The center of pressure of surface subjected to fluid pressure is the point
Which of the following pump is preferred for flood control and irrigation applications?
Slip of a reciprocating pump is defined as
jacks can be categorized based on which types of forces from below
The shaft in floor jack is vertical. Is the statement true or false
What does hydraulic jacks use to move oil through two cylinders?
How many commonly used hydraulic jacks are available?
An enclosed fluid under pressure exerts that pressure throughout its volume and against any surface containing it. Is the statement true or false
In the vacuum suspended system, the brakes are applied when
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?
In a vacuum suspended unit, when the brakes are on , the piston and diaphragm has on both sides of it
What is a hydraulic jack?
The type of braking system referred to as power brake makes use of
In the hydraulic braking system , the piston in the master cylinder is connected by mechanical linkage to the
In the integral type of power brake , the diaphragm acts directly on the hydraulic piston in the
In the power assisted kind of brake the bellows applies force to master cylinder piston
In Jeeps we use
In the air brake, air pressure is supplied by
Two general types of vacuum assisted power brakes are
If the system is not in free fall, which of the following statements is true about hydrostatic pressure?
A hydraulic machine exerts a force of 900 N on a piston of diameter 1.80 cm. The output force is exerted on a piston of diameter 36 cm. What will be the output force?
A U-tube is partially filled with water. Oil which does not mix with water is next poured into one side, until water rises by $25\;cm$ on the other side. If the density of oil is $0.8\;g/cc$, the oil level will stand higher than the water level by
The area of the piston in hydraulic machine are $10cm^2$ and $225cm^2$. The force required on the smaller piston to support a load of $1000N$ on the larger piston.
Hydraulic machines work on the application of
What should be the ratio of area of cross section of the master cylinder and wheel cylinder of a hydraulic brake so that a force of $15 N$ can be obtained at each of its brake shoe by exerting a force of $0.5 N$ on the pedal?
In a hydraulic lift, used at a service station the radius of the large and small piston are in the ratio of $20 : 1$. What weight placed on the small piston will be sufficient to lift a car of mass $1500 kg$ ?
To avoid vaporization in the pipe line, the pipe line over the bridge is laid such that it is not more than
A hydraulic press has a ram of 15 cm diameter and plunger is 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is
The maximum number of jets generally employed in an impulse turbine without jet interference are
In a typical hydraulic press, a force of 20 N is exerted on small piston of area 0.050 m2. What is force exerted by large piston on load if it has an area of 0.50 m2?
Principle of similitude forms the basis for:
A hydraulic press contains 0.25 $m^3$ (250 L) of oil. Find the decrease in volume of the oil when it is subjected to a pressure increase $\Delta p \, = \, 1.6 \, \times \, 10^7$ ,Pa. The bulk modulus of the oil is $B \, = \, 5.0 \, \times \,10^9$ Pa.