12 V and 24 V Join our social networks below and stay updated with latest contests, videos, internships and jobs! d) Does not perform all the functions a) Perform the same way for all functions Pneumatic has a great demand in manufacturing industries where it is used by engineers in the field of packaging, medical, material handling as well as mechatronics. What is the difference between pressure switch and a temperature switch? 250+ Circuit Breaker Interview Questions and Answers, Question1: What is a Circuit Breaker? One or more valves—control air. Most valve symbols have three parts (see Figure 2A below). View Answer, 4. Example 1 : Double acting cylinder is used to perform machinng operation. Thank you For Visiting. Note that the length of stroke is the actual working movement. So when the sequence changes, the program only has to be changed. at any moment they can be in one of the two states. 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. The Position and Flow Boxes indicate how the valve functions. In this video I have tried Explaining the basics of Pneumatic Circuits using the FluidSim P . Explain why interfacing is necessary in a microprocessor control of fluid power? (i) The automation of small to medium scale industries can be made viable. “ON-OFF”. a. c) 2 to 3 hp List three causes for low or erratic pressure in a hydraulic system. 1. 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. 23. d) Cost is not required (i) Air-oil reservoir (ii) Air-oil cylinder (iii) Air-oil intensifier. c) Make the drawing look impressive The logic control is a control based on logic functions like AND, OR, NOT etc. Basics Pneumatic circuits Air pilot control of double-acting cylinder A pneumatic circuit is usually designed to implement the desired logics. 2. It may be necessary to control a cylinder from more than one position. (ii) Low-level language based on Boolean expressions (iii) Functional blocks (iv) High-level languages. Question2: How does a Circuit Breaker different from Switch? Air. b) Use air-over-oil power units What is the purpose of an electrical timer? Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. What is the important requirement to get a maximum trouble-free life from fluid power systems? (i) Ladder diagram based. Test the circuit functions against any errors or mistakes. Pneumatic circuits have the following functions: 1. Simple Pneumatic Circuits By Terry Bartelt. break contact permanently when they are actuated. (i) Valve sticking or binding (ii) Cylinder sticking or binding. (i) A wear and tear of elements. In this way, a dwell can be provided when needed. last element in line. (iii) Labour productivity can be enhanced substantially. d) Gel Sanfoundry Global Education & Learning Series – Control Systems. Lubricator. 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. less expensive to purchase. Pneumatic systems usually do not exceed: 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. When comparing first cost of hydraulic systems to pneumatic systems, generally they are: more expensive to purchase. 22. 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. They make or break contact only as long as they are held pressed. c) 2 to 3 hp. This chart asks a question which has only two possible answers-Yes or No. Components. 10-20. The hydropneumatic systems use air and oil. Define Low-Cost Automation and what are its features? One way of doing this is by the circuit of Figure 12, which has two palm-operated valv… Introduction to Slotting Machine : 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. answer choices . Fluidics is fluid logics. pressure within a pneumatic circuit as long as the supply (reservoir) pressure is greater than the required circuit pressure. A step counter is a digital modular counter constructed from stepping units. Low-cost automation is defined as a technology that creates some degree of automation around the existing equipment, tools and methods. Microcomputers are used where the input and output lines are limited and more data processing is required. 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. (ii) No actuating force needed. View Answer, 7. View Answer, 5. (4.5%) QUISTION: 3 For the given pneumatic circuit. 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 The components of logic control are sensors and switching elements called binary elements, i.e. 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. Basic Valve Sizing: Air valves are sized for flow capacity (Cv) based upon a given cylinder piston size, stroke and travel time requirements. Pneumatic control systems can be designed in the form of pneumatic circuits. Prerequisites for implementing pneumatic design best … SURVEY . Explain what The components of logic control are sensors and switching elements called binary elements, i.e. using mostly the standard equipment available in the market. What are the advantages of fluidic elements? Draw the elector-pneumatic circuit using the FluidSim software 2. PLC can be interfaced with hundreds of input and output lines. What is the advantage of using microelectronic control for fluid power compared to electro-mechanical control? a) 1 hp Here we discuss about PLC Pneumatic Circuit Control with different examples. A reservoir (or receiver)—stores air. c) Cost is same to operate a) Simplify component function details The speed of the forward and backward stroke of the cylinder rod is adjustable 3. Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. Thank you For Visiting. The set of equipment can be used to build up extensive combination circuits with logic linking of the input and output signals, as Electrical relay is a switch whose contacts open or close when its coil is energised. This site uses Akismet to reduce spam. Design a purely pneumatic circuit to achieve the above sequence of operations. d) Third element in line b) Less expensive to purchase A pneumatic circuit is an interconnected set of components that convert compressed gas (usually air) into mechanical work. d) Make untrained person to understand The tenn troubleshooting means an organised and systematic study of the problem and a logical approach to the difficulty faced in the system. (ii) Since it is built using the existing resources, in a systematic way, the investment risks are low. This gas is commonly used in pneumatic circuits because it is readily available, inexpensive, and can be returned to the atmosphere. 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. a) Operate from a central hydraulic power unit components of an electrical control system. This leakage of... Slotter Machine - Types, Parts, Operations, Diagram, Specification. The lubricator in a pneumatic circuit is the: (i) Properly installed equipments (ii) Properly trained personnel, (iii) Planned bolts preventive maintenance, (ii) Leakage of pump delivery within the system. 29. If you have any questions about troubleshooting pneumatic circuits call Parker Hannifin Motion Control and Training Dept. 27. “ON-OFF”. They can also be equipped with an anti-rotation anchor, external guidance and a magnetic ring for triggering non- contact signaling elements. What is the main advantage of hydro pneumatics? The logic control is a control based on logic functions like AND, OR, NOT etc. 1. The answer determines the next step to be taken in fault analysis. a) True PLCs are designed for industrial environments where they may be exposed to heat, humidity, and corrosive atmosphere. 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. A pneumatic circuit is formed by various pneumatic components, such as cylinders, directional control valves, flow control valves, etc. View Answer, 8. Fluid power circuits use schematic drawings to: The most common hydraulic fluid is: Combinational circuit design. This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Pneumatic Systems”. The left leg of the ladder connected to the power and the right to the ground. The lubricator in a pneumatic circuit is the: first element in line. Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Multicylinder Pneumatic Circuits Electropneumatics; 1) What is the DC range of of solenoids in pneumatic systems? Learners examine the operation of five pneumatic animated circuits that use directional control valves, pilot … b) Second element in line Pneumatic cylinder is advanced by pressing two push buttons simultaneously. Oil under pressure is moving in every hydraulic circuit. View Answer, 10. This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Pneumatic Systems”. Several companies furnish air logic elements designed specifically for this type of circuit. Control a cylinder from more than one position, a dwell can be enhanced substantially to a shaper necessary a... Or erratic pressure in a hydraulic system switches, relays and solenoids etc., constitute! 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Answers, Question1: what is the important requirement to get free Certificate Merit. Both media, the program only has to be taken in fault analysis comparing first cost of hydraulic systems pneumatic! System pressure the common methods used in hydraulic system we discuss about PLC pneumatic circuit to achieve the sequence. Position to another more data processing is required ) True b ) False View answer,.!

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