Hydraulic Machines

IMPORTANT

Hydraulic Machines: Overview

This topic consists of various concepts like Hydraulic Lift,Mechanical Advantage of Hydraulic Lift,Braking System of Vehicles, etc.

Important Questions on Hydraulic Machines

MEDIUM
IMPORTANT

The area of cross-section of the wider tube shown in figure is 800 cm2. If a mass of 12 kg is placed on the massless piston, the difference in heights h in the level of water in the two tubes is

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HARD
IMPORTANT

For the system shown in the figure, the cylinder on the left at L has a mass of 600 kg and cross-sectional area of 800 cm2. The piston on the right, at S, has cross-sectional area 25 cm2 and negligible weight. If the apparatus is filled with oilρ=0.75gm cm-3. Find the force F required to hold the system in equilibrium

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EASY
IMPORTANT

A force of 500 N is executed on a hydraulic piston of cross sectional area of 100 cm2. The cross-sectional area of other piston which supports a truck of a tonne weight is [use g=9.8 m s-2]

EASY
IMPORTANT

The working of hydraulic lift is based on the principle of

MEDIUM
IMPORTANT

A car hoist is operated by a hydraulic as pictured. Determine compressive force F applied by hydraulic to keep the car-weight W in equilibrium at given position.

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EASY
IMPORTANT

Which principle works on hydraulic lift?

EASY
IMPORTANT

Write a short note on hydraulic lift.

EASY
IMPORTANT

What is the formula for hydraulic lift?

EASY
IMPORTANT

How braking system in vehicles work?

EASY
IMPORTANT

In a hydraulic lift, the small piston has an area of 2 cm2 and the large piston has an area of 80 cm2. What is the mechanical advantage of the hydraulic lift?

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MEDIUM
IMPORTANT

Find the mechanical advantage of the hydraulic lift.

EASY
IMPORTANT

Mechanical advantage of a hydraulic lift is directly proportional to the:

MEDIUM
IMPORTANT

In a car lift, the mechanical advantage is 2.5. If the mass of the car to be lifted by the larger piston is 1200 kg, calculate the force exerted by the compressed air on the smaller piston. Take  g=10 m s-2.

EASY
IMPORTANT

What do you understand by the mechanical advantage in a hydraulic lift? Explain in brief.

MEDIUM
IMPORTANT

Hydraulic brakes works on the principle of

MEDIUM
IMPORTANT

The mechanical advantage of a hydraulic lift is directly proportional to

MEDIUM
IMPORTANT

Hydraulic brakes works on the principle of

HARD
IMPORTANT

The mechanical advantage of a hydraulic lift is directly proportional to

HARD
IMPORTANT

Derive the expression for hydraulic lift.

MEDIUM
IMPORTANT

A hydraulic lift can lift a maximum load of 3000 kg wt.  The area of cross section of the piston carrying the load is 4.25×10-2 m2. The maximum pressure the smaller piston would have to bear is