Hydraulic Accumulator Device

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What is the main purpose of a hydraulic accumulator?

To increase the speed of hydraulic machinery
To cool down the hydraulic system
To store the energy of a liquid as pressure energy (correct)
To reduce the pressure in the hydraulic system

In a hydraulic lift or crane, when does the energy stored in the hydraulic accumulator get utilized?

When the lift or crane is moving downward
When the lift or crane is moving upward (correct)
When the ram is at the lowermost position
When the machine is not in operation

What happens when the ram in a hydraulic accumulator reaches the uppermost position?

The ram automatically moves back to the lowermost position
The accumulator stops functioning
The cylinder is full of water and the accumulator has stored the maximum pressure energy (correct)
The cylinder becomes empty

How does the hydraulic accumulator supply energy to a hydraulic machine like a lift or crane?

By releasing the stored pressure energy when needed (C) Signup and view all the answers

What happens if the water under pressure is not needed by the machine connected to the hydraulic accumulator?

The water under pressure will be stored in the cylinder (C) Signup and view all the answers

Why does a hydraulic lift or crane require a large amount of energy from the hydraulic accumulator?

When moving upward (A) Signup and view all the answers

What principle is the hydraulic press based on?

Pascal's law (D) Signup and view all the answers

In a hydraulic press, which component contains a ram?

Large cylinder (D) Signup and view all the answers

What is the area of the plunger denoted by in the text?

$a$ (C) Signup and view all the answers

What is equated to determine the weight lifted by a hydraulic press?

Weight to be lifted (C) Signup and view all the answers

What defines the mechanical advantage of a hydraulic press?

Weight to be lifted divided by force applied on the plunger (D) Signup and view all the answers

What component is used for lifting or lowering heavy loads in a hydraulic crane?

Jigger (A) Signup and view all the answers

What is the purpose of a hydraulic intensifier?

To increase the intensity of pressure of water. (C) Signup and view all the answers

How does a hydraulic intensifier work?

By increasing the intensity of pressure with hydraulic energy. (A) Signup and view all the answers

What is a key component of a direct-acting hydraulic lift?

Sliding ram (C) Signup and view all the answers

Which type of hydraulic lift is a modified form of the direct-acting lift?

Suspended hydraulic lift (B) Signup and view all the answers

What is the purpose of a suspended hydraulic lift?

To carry passengers or goods from one floor to another (D) Signup and view all the answers

What is the function of a fluid or hydraulic coupling?

Transmit power with the help of fluid (D) Signup and view all the answers

What happens when the driving shaft in a hydraulic coupling is rotated?

Pressure and kinetic energy of oil increases (D) Signup and view all the answers

What does a hydraulic press do?

Increases pressure to lift heavy weights (A) Signup and view all the answers

What powers a fluid or hydraulic coupling?

Fluid (generally oil) (D) Signup and view all the answers

What occurs when water under high pressure enters the runner of a reaction turbine in a hydraulic coupling?

The oil flows inwardly to the inner radius (C) Signup and view all the answers