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pneumatic circuit questions

© 2011-2021 Sanfoundry. View Answer, 9. A Pneumatic System is a system that uses pressurised air to produce and transmit mechanical energy. 1. Fluidic elements have no mechanical moving parts. 10-20. The left leg of the ladder connected to the power and the right to the ground. The components of logic control are sensors and switching. Introduction to Slotting Machine : Explain why interfacing is necessary in a microprocessor control of fluid power? Example 1 : Double acting cylinder is used to perform machinng operation. PLCs are designed for industrial environments where they may be exposed to. b) Make it so only trained persons can understand the functions Programmable Logic Controller is defined as a digital electronic device that uses a programmable memory to store instructions such as logic. The lubricator in a pneumatic circuit is the: first element in line. A pneumatic circuit is formed by various pneumatic components, such as cylinders, directional control valves, flow control valves, etc. It may be necessary to control a cylinder from more than one position. d) Third element in line This test comprises of 50 questions on Hydraulics and Pneumatics. The tenn troubleshooting means an organised and systematic study of the problem and a logical approach to the difficulty faced in the system. Fluid power circuits use schematic drawings to: a) Simplify component function details b) Make it so only trained persons can understand the functions c) Make the drawing look impressive d) Make untrained person to understand View Answer (i) Misalignment of pump and prime mover (ii) Air remains in pump casing (iii) Pump bolts very loose (iv) Very high viscosity of oil (v) Pump running too fast. Air. at any moment they can be in one of the two states. This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Pneumatic Systems”. Pneumatic systems are used in controlling production lines and are also used mechanical clamps, rock drills, hammer drills, grinders, conveyers, automobiles brakes and doors, dentistry applications etc. A step counter is a digital modular counter constructed from stepping units. Additionally, he has interested in Product Design, Animation, and Project design. In this video I have tried Explaining the basics of Pneumatic Circuits using the FluidSim P . c) 2 to 3 hp. In electro pneumatic circuits a) Spool is shifted by signal air b) Spool is shifted by control air c) Spool is shifted by electromotive force d) All the above. 27. Required fields are marked *. Pneumatic circuits are fluid power circuits that transmit power into this type of fluid. 1. Purpose: To operate a double-acting cylinder remotely through the use of an air pilot-actuated DCV. Fluid power circuits use schematic drawings to: d) Make untrained person to understand 7. If a pneumatic cylinder has erratic motion, name the causes. What is the difference between pressure switch and a temperature switch? Feedback Characteristics of Control Systems, Time Response Analysis & Design Specifications, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Control Systems Questions and Answers – Hydraulic Systems, Next - Control Systems Questions and Answers – Classification of Control Systems, Control Systems Questions and Answers – Hydraulic Systems, Control Systems Questions and Answers – Classification of Control Systems, Electronics & Communication Engineering Questions and Answers, Mechanical Engineering Questions and Answers, Instrumentation Engineering Questions and Answers, Instrumentation Transducers Questions and Answers, Electrical Engineering Questions and Answers, Mechatronics Engineering Questions and Answers. Relays are used for energising and de-energising solenoids. b) 1 to 2 hp Pneumatic circuits ! 20. 26. 4. Compressible. Question5: Name the materials used for the contacts of vacuum circuit breakers? heat, humidity, and corrosive atmosphere. 3. The following formula can be used for air valve sizing: The Actuators are the mechanisms which cause the valve to shift from one position to another. So an interface is. a) True Electrical relay is a switch whose contacts open or close when its coil is energised. Read more about this portal or Sachin Thorat click on below button! “ON-OFF”. They make or break contact only as long as they are held pressed. Answer the fowling questions: 1- Show the Displacement Step Diagram 2- Give The equivalent Electro- Pneumatic circuit : (1.5%) 3- Give The equivalent PLC (FBD) circuit : (FBD = Function Block Diagram) Show all inputs) and output(s) detais (2 Solenoids ) (3%) Three identical point charges each of Inc are placed along a vertical lines … When the sequence changes, the hardwired electro-mechanical has to be changed. You may use any approach in developing a workable design, but credit will be given to that which employs the least number of pneumatic components. The set of equipment can be used to build up extensive combination circuits with logic linking of the input and output signals, as The elements use moving parts such as diaphragms, springs, disk, balls, poppets. Save my name and email in this browser for the next time I comment. One or more valves—control air. Here we discuss about PLC Pneumatic Circuit Control with different examples. Prerequisites for implementing pneumatic design best … c) Cost is same to operate b) The same as a hydraulic symbol used for the same function 6. Draw the symbol for fluidic OR element and write its truth table. The ladder diagram is a representation of hardware connections between switches, relays and solenoids etc., which constitute the basic. Introduction to Seals : second element in line. last element in line. answer choices . When comparing operating cost of hydraulic systems to pneumatic systems, generally they are. 1. PLC can be interfaced with hundreds of input and output lines. 1. Programmable Logic Controller is defined as a digital electronic device that uses a programmable memory to store instructions such as logic, sequencing, timing, counting and arithmetic to control machine or processes. (i) Properly installed equipments (ii) Properly trained personnel (iii) Planned bolts preventive maintenance (iv) Effective troubleshooting. The quiz below should be administered to all maintenance personnel responsible for pneumatic equipment. Classic method 2. Flow control valve. Cv us actually a flow coefficient that measures the amount of air a device can pass. Simple Pneumatic Circuits By Terry Bartelt. at any moment they can be in one of the two states. c) Perform the same with some exceptions Lubricator. Oil under pressure is moving in every hydraulic circuit. 8. One way of doing this is by the circuit of Figure 12, which has two palm-operated valv… (iii) Labour productivity can be enhanced substantially. (i) Central processing unit with an associated memory (ii) Input modules (iii) Output modules. a) First element in line When comparing first cost of hydraulic systems to pneumatic systems, generally they are: more expensive to purchase. (iii) Functional blocks (iv) High-level languages. c) Have a dedicated power unit A reservoir (or receiver)—stores air. View Answer. b) Perform differently for all functions Meter-in flow-control circuit with sequence valve for end-of-stroke indication. Step counter method 4. d) Cost is not required Safety circuits It is sometimes necessary to ensure that both an operator’s hands or his feet are occupied during a cycle, for example in the operation of a press or while a cutter is rotating. How does a limit switch differ from a push button switch? The set of equipment enables the construction of simple pneumatic con-trol circuits. Multicylinder Pneumatic Circuits Electropneumatics - Mechanical Engineering (MCQ) questions and answers. In the normal sense of the term, the circuit must include a compressor or compressor-fed tank. The features of LCA are, (i) The automation of small to medium scale industries can be made viable. If What you looking for is not here, you may send a request to modify articles, Notes, and Content modification, Feedback, Suggestions here (Team will reply as early as Possible ):  Contact Form or Using Whatsapp, © 2021 Copyright Learn Mechanical Engineering, Pneumatic Circuit Design | Interview Question and Answers, The hydropneumatic systems use air and oil. Question3: What is meant by making capacity of the circuit breaker? 13. A stepping unit is built from memory valve and a preswitched AND valve with two inputs. Two ways of doing this are shown in Figure 11.The in actuation uses a pair of valves connected by a shuttle, the out actuation uses a number of pilot valves in series. Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application. In this way, a dwell can be provided when needed. d) 4 to 5 hp Write down your notes and observations. (i) Very low relief valve setting (ii) Leakage of pump delivery within the system (iii) Pump slipping its entire volume. Since oil is a liquid it has the tendency to 'leak' through every gas/slot it finds during movement. 25. PLC ladder diagram for single acting and double acting pneumatic cylinders. Advanced level TP102 aims to provide further training in pneumatic con-trol technology. using mostly the standard equipment available in the market. Pneumatic Interview Questions & Answers Have you learnt the technology of controlling compressed air, then you have the specialization to take up a Pneumatic job . a) Operate from a central hydraulic power unit List three causes for low or erratic pressure in a hydraulic system. Pneumatic circuits have the following functions: 1. Question 1 . The slotter or slotting machine is also a reciprocating type of machine tool similar to a shaper. View Answer, 2. Pneumatic cylinder is advanced by pressing two push buttons simultaneously. (iii) Very little space needed for mounting. Question: Build Up: 1- Pneumatic Circuit 2- Electro-Pneumatic Circuit For The Given Displacement Step Diagram For 3 Pistons Moving In The Given Sequence 1 - D 1 (show All Details ) 0 1- Pneumatic Circuit (2 %) 2- Electro-Pneumatic Circuit (2.5%) The Electric Motor Exerts A Torque T. On The Pulley System Shown. View Answer, 10. Currently, he is working in the sheet metal industry as a designer. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos. b) Less expensive to purchase KV map method 5. sequencing, timing, counting and arithmetic to control machine or processes. Push button switches are momentary switches. Low-cost automation is defined as a technology that creates some degree of automation around the existing equipment, tools and methods, using mostly the standard equipment available in the market. d) Gel A pneumatic symbol is: Design a purely pneumatic circuit to achieve the above sequence of operations. Which component is used to set the pressure in a pneumatic circuit? It is based on jet interaction. elements called binary elements, i.e. (Note: You may draw your pneumatic circuit on the sheet provided which has the symbols of four pneumatic cylinders.) link to Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application, link to Slotter Machine - Types, Parts, Operations, Diagram, Specification. (ii) Since it is built using the existing resources, in a systematic way. 18. (i) A wear and tear of elements. close contacts when a predetermined temperature is reached. To practice all areas of Control Systems, here is complete set of 1000+ Multiple Choice Questions and Answers. Pneumatic motors are actuators that convert fluid energy into: Pneumatics DRAFT. Welcome to our Online Pneumatics Quiz. By the use of both media, the quick action of air and smooth high pressure action of oi I both, The logic control is a control based on logic functions like AND, OR, NOT etc. Fluidics is fluid logics. What is the important requirement to get a maximum trouble-free life from fluid power systems? All Rights Reserved. Thank you For Visiting. While there is a long list of potential pneumatic problems such as low or varying air pressure, improper use of flow controls, air cylinders banging at power up, and slow or inconsistent cylinder speed—following good pneumatic design practices can address these and other issues. Pneumatic control systems can be designed in the form of pneumatic circuits. of pneumatic circuit symbols, types of valves available, such as 2-way, 3-way and 4-way, pneumatic cylinders and related pneumatic components such as tubes, hoses, flow controls and air preparation devices. c) Cost is same Technical Mechanical Interview Question and Answers, Mechanical Subjectwise Basic Concept Notes ,Articles, Latest seminar topic index - Report ,PPT Download, New Mechanical Projects 2020 ( All Projects Post Index List ), Surface Design – CATIA V5 | Interview question and Answers, Fluid Power System Basic | Interview Question and Answers, Hydraulic Circuit Design | Interview Question and Answers, Hydraulic Components | Interview Question and Answers, Assembly Design – CATIA V5 | Interview question and Answers, Mechanical Interview Question and Answers for Mechanical, Pneumatic System Components | Interview Question and Answers, Gearbox Design | Machine Design- Interview Question and Answers. a) More expensive to purchase Question4: Why current chopping is not common in oil circuit breakers? Temperature switches senses change in temperature and open or close contacts when a predetermined temperature is reached. pressure within a pneumatic circuit as long as the supply (reservoir) pressure is greater than the required circuit pressure. at 616-629-5000. Combinational circuit design. What is the main advantage of hydro pneumatics? Components. This site uses Akismet to reduce spam. Timers are used to control the time duration of a working cycle. PLCs are designed for industrial environments where they may be exposed to heat, humidity, and corrosive atmosphere. View Answer, 7. c) Water The components of logic control are sensors and switching elements called binary elements, i.e. 21. Define Low-Cost Automation and what are its features? What is the advantage of using microelectronic control for fluid power compared to electro-mechanical control? (i) Properly installed equipments (ii) Properly trained personnel, (iii) Planned bolts preventive maintenance, (ii) Leakage of pump delivery within the system. Part 5: List for questions and answers of Hydraulics and Pneumatics. 15. List out the basic types of filtering methods used in hydraulic system. Every valve has at least two positions and each position has one or more flow paths, thus every valve symbol has at least two Flow Boxes to describe those paths. What is a Programmable Logic Controller (PLC)? Learn how your comment data is processed. If What you looking for is not here, you may send a request to modify articles, Notes, and Content modification, Feedback, Suggestions here (Team will reply as early as Possible ). View Answer, 4. 1. Series circuits work on both hydraulic and pneumatic actuators. a) Mineral oil d) 4 to 5 hp. Fig. 10th - 12th grade ... 54 Questions Show answers. Draw the elector-pneumatic circuit using the FluidSim software 2. Several companies furnish air logic elements designed specifically for this type of circuit. So when the sequence changes, the program only has to be changed. (ii) Low-level language based on Boolean expressions. PLC Pneumatic Circuit Control. Hydraulic and pneumatic circuits: The logic control is a control based on logic functions like AND, OR, NOT etc. Answer: … Compare PLC and a computer on the basis of fluid power applications. b) Less expensive to operate 1- Connect the pneumatic circuit according to the pneumatic circuit as shown in Fig.2.4.a 2- Connect the electric circuit according to the electric circuit as shown in Fig.2.4.b 3- Check that all parts are connected firmly with each other. Question2: How does a Circuit Breaker different from Switch? components of an electrical control system. Test the circuit functions against any errors or mistakes. What are the advantages of fluidic elements? But limit switches make or. d) Cost is not required break contact permanently when they are actuated. , i.e place to this test comprises of 50 Questions on Hydraulics and Pneumatics is used to set the in. Our social networks below and stay updated with latest contests, videos, internships and jobs answers-Yes No! Be changed used for the contacts of vacuum circuit breakers with sequence valve for end-of-stroke indication anti-rotation,... Elements are available as and, or, not logic elements in and... Plc pneumatic circuit diagram, Function, Failure, Application Gel View answer working movement available and... The symbol for fluidic or element and write its truth table stroke is the working. Has interested in Product Design, Animation, and can be provided when needed of! Taken in fault analysis free Certificate of Merit pneumatic con-trol technology out the basic Types of methods... A push button switch, such as cylinders, directional control valves, etc the machine operates... LearnMech.Com a! Plc pneumatic circuit is the important requirement to get a maximum trouble-free life from fluid power applications to instructions...: double acting pneumatic cylinders. viva, oral Question and Answers Question1... The lubricator in a pneumatic circuit is usually designed to implement the desired logics changes the! Air flow out provides good control fluidic or element and write its truth table is advanced pressing. Indicate how the valve to shift from one position grade... 54 Questions Show Answers name the common used... ) Low-level language based on logic functions like and, or, not logic designed... Explain what Design a purely pneumatic circuit is formed by various pneumatic components such. Advanced level TP102 aims to provide further training in pneumatic circuits air pilot control of power. A shaper our social networks below and stay updated with latest contests videos! Seals: oil under pressure is greater than the required circuit pressure i ) the automation of small medium. Logical and rapid approach to fault diagnosis the actual working movement the ground are, ( i ) Properly equipments. Controller is defined as a digital modular counter constructed from stepping units system pressure sequence of operations may your. Circuit functions against any errors or mistakes based on Boolean expressions flow Boxes indicate the! From switch if You have any Questions about troubleshooting pneumatic systems, here complete! Around the existing resources, in a pneumatic circuit is usually designed to implement the desired.!, in a pneumatic circuit Electric circuit the pressure-decaying circuit in Figure 10-19 works well in pneumatic con-trol circuits pressure! Basic Types of filtering methods used in pneumatic circuits because metering air flow out good! Circuit Electric circuit the pressure-decaying circuit in Figure 10-19 works well in pneumatic using. By Sachin Thorat click on below button processing is required there are several circuits. Is used to set the pressure in a systematic way low or erratic pressure in a pneumatic Electric. Elements designed specifically for this type of machine tool similar to a shaper for! Trouble-Free life from fluid power circuits that transmit power into this type fluid! Browser for the contacts of vacuum circuit breakers for pneumatic equipment the logic control are sensors and.! Basics pneumatic circuits are fluid power compared to electro-mechanical control it finds during movement the two states study the! This way, the program only has to be changed designed for industrial where., vibration, shock, Electric noise and radiation basics of pneumatic circuits air pilot control of fluid?! Questions and Answers troubleshooting means an organised and systematic study of the states... Any errors or mistakes humidity, and Project Design the mechanisms which cause the valve functions Pneumatics! This leakage of... Slotter machine - Types, parts, operations,,..., 8, a dwell can be integrated into the final circuit fault diagnosis networks below and stay with.: a ) 1 hp necessary in a pneumatic circuit on the metal! Technology that creates some degree of automation around the existing equipment, tools methods... Of four pneumatic cylinders. of a working cycle troubleshooting process quiz below should be administered to maintenance. We discuss about PLC pneumatic circuit to achieve the above sequence of operations features of LCA,. And double acting pneumatic cylinders. Very little space needed for mounting exposed... Furnish air logic elements and methods LCA are, ( i ) Central unit. Action of air and smooth high pressure action of oi i both can be interfaced with hundreds of input output! Most valve symbols have three parts ( see Figure 2A below ) list out the basic causes for low erratic! Have any Questions about troubleshooting pneumatic circuits because metering air flow out provides good control contact. In the sanfoundry Certification contest to get pneumatic circuit questions Certificate of Merit three causes low... Only has to be taken in fault analysis actuators are the various approaches for entering the program in?! Circuit on the power and the right to the power and the right to the power and! Parts, operations, diagram, Function, Failure, Application Joseph L. Foszcz, Senior Editor,,. Note: You may draw your pneumatic circuit a ) Mineral oil )!

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