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WorksheetsHYDRAULIC AND PNEUMATIC CIRCUIT
Total questions: 17
Worksheet time: 6mins
Fluid power circuits use schematic drawings to
Make it so only trained persons can understand the functions
Simplify component function details
Make untrained person to understand
Make the drawing look impressive
Most hydraulic circuits
Have a dedicated power unit
Use air-over-oil power units
Operate from a central hydraulic power unit
Does not have dedicated power unit
Hydraulic and pneumatic circuits
Perform the same with some exceptions
Perform differently for all functions
Perform the same way for all functions
Does not perform all the functions
The lubricator in a pneumatic circuit is the
First element in line
Second element in line
Third element in line
Last element in line
Series circuits work on both hydraulic and pneumatic actuators.
True
False
Which of the following statements is true?
Tank line feed control systems have speed control only in one direction
Standard block feed circuits have speed control in two directions
Meter-in feed circuits have speed control in two directions
all of the above
What is a pressure sequence valve?
It is a combination of nonadjustable pressure relief valve and directional control valve
It is a combination of adjustable pressure relief valve and directional control valve
It is a combination of adjustable pressure reducing valve and check valve
It is a combination of adjustable pressure reducing valve and flow control valve
What is the notation used for the sequence of operations mentioned below?
1. Cylinder A undergoes forward stroke
2. Cylinder B undergoes forward stroke
3. Cylinder A undergoes backward stroke
4. Cylinder B undergoes backward stroke
A+ B- A- B+
A+ B+ A– B–
A– B– A+ B+
A+ A– B+B–
Which of the following statements is true for cascade method which is used to draw a pneumatic circuit?
signal processing valves are connected in parallel
When the number of signal processing valves are greater than 4, the signals are strong
Cascade method does not consider the cost factor
all of the above
In a regenerative circuit, the speed of extension is greater than that for a regular double-acting cylinder
because the flow from the (a) regenerates with the pump.
For two cylinders to be synchronized, the piston area of cylinder 2 must be equal to (a) between
the areas of piston and rod for cylinder 1.
Meter (a) systems are used primarily when the external load opposes the direction of motion of the
hydraulic cylinder.
One drawback of a meter (a) system is the excessive pressure build-up in the rod end of the cylinder while it is extending.
Fail–safe circuits are those designed to prevent injury to operator or damage to (a) .
The load-carrying capacity for a regenerative cylinder during extension equals pressure times the piston
rod area.
True
False
When two cylinders are identical, the loads on the cylinder are not identical, and then extension and
retraction can be synchronized.
True
False
Two cylinders are used to transfer parts from a magazine onto a chute (Figure 1.12). When a push button is pressed, the first cylinder extends. Pushing the part from the magazine and positions it in preparation for transfer by the second cylinder onto the out feed chute. Once the part is transferred, the first cylinder retracts, followed by the second. Confirmation of all extended and retracted positions are required.
A+B+A-B-
A+B+B-A-
A+A-B+B-
