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WorksheetsAccumulator - Types
Total questions: 20
Worksheet time: 11mins
What is the function of unloading relief valve and can it be used as an accessory for accumulators?
unloading relief valve is used to charge the accumulator by a pump when accumulator pressure falls below the set value but is not used as an accessory
unloading relief valve is used to charge the accumulator by a pump when accumulator pressure falls below the set value and it can be used as an accessory.
unloading relief valve is used to charge the accumulator by a pump when accumulator pressure rises above the set value and is used as an accessory
unloading relief valve is used to charge the accumulator by a pump when accumulator pressure rises above the set value but is not used as an accessory
Accumulator used in gas charged accumulator is
Hydraulic
Pneumatic
Hydropneumatic
None of the above
A ________ is a storage reservoir under pressure where a liquid is held under pressure.
Hydraulic accumulator
Hydraulic crane
Hydraulic gear
Hydraulic pump
The inert gas used in gas compressed accumulator is usually _______
Carbon dioxide
Nitrogen
Oxygen
Sulphur
The relation for rapid change in pressure and volume adiabatically is given as
p0 v0 = p1 v1 = p2 v2
p0 v0 = p1 v1n = p2 v2n
p0 v0n = p1 v1n = p2 v2n
None of the above
Which of the following is a gas charged accumulator?
Bladder type accumulator
Spring loaded accumulator
Weight loaded accumulator
All the above
Which of the following statements are true for accumulator used in hydraulic systems?
1. accumulator stores fluid with pressure
2. accumulator stores fluid without any pressure
3. accumulator stores compressible liquid
4. spring is used as an external source to keep the fluid under hydraulic pressure
1, 3 and 4
1 and 4
2 and 3
2, 3 and 4
A hydraulic accumulator normally consists of________________?
two cylinders, two rams and a storage device
a cylinder and a ram
two co-axial rams and two cylinders
a cylinder, a piston, storage tank and control valve
special type of pump with storage device and a pressure regulator
A hydraulic accumulator is a device that stores the potential energy of an (a) held under pressure
by an external source against some dynamic force.
An accumulator permits (a) to be absorbed and stored in a hydraulic system.
Hydraulic accumulator is used for
Accumulating oil
Supplying large quantities of oil for very short duration
Generally high pressures to operate hydraulic machines
Supplying energy when main supply fails
Hydraulic intensifier is a device used for.......
Storing energy of a fluid in the form of pressure energy
Increasing pressure intensity of a fluid
Transmitting the power from one shaft to another
None of the above
As a general rule, the pre-charge pressure of a gas-loaded accumulator should be set between _________________ of the maximum operating pressure of the pump.
40-50%
80-90%
15-20%
60-80%
When mounting bladder type accumulators, an additional _____________ is used between the accumulator body and base to provide additional stability
Bolt
Clamp
Rubber ring
Bracket
A _______________ accumulator has a bladder that can expand and contract quickly
Gas loaded
Weight loaded
Spring loaded
P-port
Manufacturers of accumulators specify accumulator size by _____________________
Total amount of liquid obtained from the accumulator
Total internal volume of accumulator
Outside diameter of tank
Length of tank
The accumulator that is typically used for pulsation dampening and noise suppression is generally small ____________________ type accumulators.
Bladder
Piston
Diaphragm
Non-Barrier
The ________________________ accumulator is usually small because of the precise fit required by its internal components.
Bladder
Piston
Diaphragm
Non-barrier
Which of the following is an accumulator safety rule?
Roll up your sleeves before working with an accumulator
Reduce hydraulic pressure to zero at shutdown
Pre-charge an accumulator before each use
Use compressed air to charge an accumulator for additional safety
The Following is a symbol of
Spring Loaded accumulator
Weight Loaded accumulator
Gas Charged accumulator with seperator
Gas Charged accumulator without seperator
