hydraulic and pneumatic circuits mcq questions

hydraulic and pneumatic circuits mcq questions

1. Oil is discharged due to the meshing of gears. fluid power engineers. Contents show 1. 12) Why is fluid power preferred in mobile vehicles? Subject: Hydraulics and Pneumatics 5. High response relative insensitivity to contamination. That’s it Thanks for reading our article on Hydraulics and Pneumatics Question paper. write the classification of the control valve. Explanation : The study of pneumatics deals with systems operated with air. Oil Hydraulics and Pneumatics (2171912) MCQ. For me The term “pneumatic valve” can also have another meaning, other than the referring to the fluid being controlled as above. 8. first stage) is forced into the intercooler. 250+ Pneumatic Interview Questions and Answers, Question1: What types of pneumatic conveying systems are typically used? 11. In an 4. In spring-loaded accumulator, the piston is preloaded with a spring. In this type, gears are meshing with each other. It will be apparent that pneumatic circuits can be highly complex, involving pneumatic or electric logic controls. Explain with neat sketch gear type motors. Answer : Working fluid: Pneumatics use air, Hydraulics use Oil; Power: Pneumatic power less than hydraulic power; Size: P components are smaller than H components; Leakage: Leaks in hydraulics cause fluid to be sticking around the components. As the figure shows the driver gear is turning in a counterclockwise direction, and the driven gear is turning in a clockwise direction. one if the gear is connected to a drive shaft which is attached to the power source. The lubricator in a pneumatic circuit is the: first element in line. This type of accumulator delivers only a small amount of oil at low pressures. What is the function of sequence valve used in hydraulic circuits? It generates forces & transmits motion using hydraulic fluids. The maximum distance between loop components will be: a. Saif M. is a Mechanical Engineer by profession. Sketch & explain pressure relief valves. Oil Hydraulics and Pneumatics (2171912) MCQ. Ans: Differences between hydraulic & pneumatic system : Fluidics: Fluidics is a part of the fluid power technology that develops a totally reliable hydrauic& pneumatic control system using fluid flow phenomena in components & circuits to perform a variety of control functions such as sensing, logic, memory & timing. For rotary motion, motors are used. Mention the applications of pneumatics in the engineering field. Solve any one question from Q5 and Q6. The oil at atmospheric pressure enters into the chamber through the inlet port. The figure has shown a pilot operated valve consists of main spool, a valve body a spring & a second adjusting screw. The diaphragm acts as an elastic separator between the oil and gas.A shut off button is provided at the base of the diaphragm. here ME8694 Hydraulics and Pneumatics … Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. Gears are in actual contact with each other. both hydraulic and pneumatic systems are the same on basis of precision. The signal pilot valves are also termed as the signal generator. It offers a wide range of speed control which is difficult to be obtained on the machine drive. Answer B. MCQ No - 2. In a hydraulic system, a pump converts mechanical energy into hydraulic energy. Making the air to fill a volume after passing through a restriction C. Elongating the path of air D. Any of the above Define fluidics & mention the needs for fluidics. 7) Which one of the following is the advantage of the pneumatic system? 28. Questions (50) Publications (43,740) Questions related to Pneumatic. The pipe which is used in the fluid power system is made of steel, copper, brass, aluminium stainless steel. Q1.A pressure relief valve can be a) Direct operated b) Pilot operated c) Solenoid operated d) All the above. Also, the exhaust flow passes freely out of the cylinder from left. For linear motion, cylinders are used. The _____ enables the cylinder to lift heavy loads. 27. HYDRAULICS and FLUID MECHANICS Questions and Answers pdf free download for freshers civil engineering mcqs objective type questions lab viva manual Skip to content Engineering interview questions,Mcqs,Objective Questions,Class Notes,Seminor topics,Lab Viva Pdf free download. When the system pressure reaches a valve which is high enough to force the poppet off its seat this permits the flow from the outlet to the tank until the system pressure drops to set the valve. Piping to carry oil from one location to another. (4 marks) 6 (a) Explain the application of AND Valve with a typical circuit. The components of logic control are sensors and switching elements called binary elements, i.e. Q1…..pump is also called as velocity pump a) Reciprocating b) Rotary displacement c) … After this, the air is sucked in the high pressure (HP) cylinder during its suction stroke and finally, the air is further compressed (i.e. The working fluid of hydraulic system is water (or) oil (or) any liquid. Specific need of control engineering forced engineerings for a solution within the fluid power system. Heavy lifting work is often accomplished by shifting fluids in big machines. Draw a piston type reciprocating air and explain its working. The sphere is filled with water, as the piston moves, the water spurts out of all the holes. 1. With the help of an accumulator, the energy can be stored, for used when the power is off. oil. A. Pneumatic-electric elements B. Answer Explanation. air circuits; hydraulic circuits; both air and hydraulic circuits; 11. Inthe other external, the large diameter of the spool closes the path between A & B, the flow path is blocked. The poppet valve is simple and also easy to operate. which will improve your skill. port A, port P &port Ex. U-packing is used to prevent leakage between the piston & the barrel. But sometimes, the air is required at a high pressure. solid. Explain the construction and working of Diaphragm Accumulator. Spring applies force on the piston. At this stage discharge valve opens and the air is delivered to the container and once again the same cycle is repeated. last element in line. Explain Basic methods of transmission of power in brief. Floating Emitter... © The contents of this website are protected by copyright law.. This test comprises of 50 questions on Hydraulics and Pneumatics. Answer: Advantages of a hydraulic system: Answer: Relief valves are automatic valves used on systems lines and equipment to prevent over pressurization. The basic symbol for the pump is a circle containing one or more arrow heads indicating the direction(s) of flow … Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. 24. Definition of pump: The pump is a device which is used to pump fluid. Reduction heat due to compression by using intercoolers. Next . Methods of power transmission: There are basically 3 of transmission of power & they are : (a) Mechanical & Electrical mode: The power that drives a machine is transmitted through. Pneumatics means gas or air. This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Pneumatic Systems”. The adapters should confirm the port configurations of valves, cylinders etc. Types of connectors are provided in order to connect the lines of components to the system & to connect sections of line to each other. Q1…..pump is also called as velocity pump a) Reciprocating b) Rotary displacement c) Centrifugal d) Screw This test comprises of 50 questions on Hydraulics and Pneumatics. An adjacent screw is provided to vary the spring force so that the valve can set open any pressure within a specified range. This test comprises of 50 questions on Hydraulics and Pneumatics. b) Second element in line. Common faults in the hydraulic systems are: Ans. A. Solenoid pilot-operated valves must have at least_____pilot pressure minimum. The subject which deals with the area of fluid logic is called fluidics. False. Hydraulic and pneumatic circuits: perform the same way for all functions. 1. Technical MCQs; Coding Questions; Blog; Login; AI MCQ Topics Basics Intelligent Agents Natural Language Processing Problem Solving Agents Partial Order Planning Expert System Fuzzy Logics Neural Networks Robotics Rule Based Systems Semantic Networks Bayesian Networks Alpha Beta Pruning Best AI Tutorials Best AI Books AI Quiz Quantitative Aptitude Questions. Part 1: List for questions and answers of Hydraulics and Pneumatics. The valve 1 is a main operating valve which is used to move the ram. 4. Which is/are a function of pneumatic circuits? Oil Hydraulics and Pneumatics (2171912) MCQ. _____use pressurized oil or other liquids. Labels. Explain construction & working of the single acting cylinder. A second smaller valve 2 Known as 4/2 pilot valve has been added to allow the main valve to be operated by system pressure. When the start button is pressed, valve 2 changes over pressurized Z, by the impulse of air energy, causing valve 1 to energize and the ram to extend. It can also be stated that “when pressure is applied to the fluid which is confined to flow in all the directions, then that fluid transmit the same pressure in all direction at the same rate”. Part 2: List for questions and answers of Hydraulics and Pneumatics. (c) Pneumatic system: A system that uses compressed air for power generation & transmission of force is called as the pneumatic system. It is released as it is required by the demand of the system. Explain with neat sketch vane compressor. Match the following group 1 items with group 2 items and select the correct option. Q2.How is reverse flow possible in pilot operated check valve? A pump to force the oil through the system. Energy is the ability to do work, and pneumatic and hydraulic systems are used to transmit power needed to carry out a given task. 21. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. Q1.In hydraulic systems a) The mechanical energy is transferred to the oil and then converted into mechanical energy Construction: A simple vane compressor consists of a rotor mounted eccentrically in the body and supported by ball and roller bearings in the end covers of the body. 2. Intensifier has diameters of … here ME8694 Hydraulics and Pneumatics notes download link is provided and students can download the ME8694 HP Lecture Notes and can make use of it. Which of the following is not a power generation device? Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. This Educational blog provides questions and answer and important mcq points for all competitive exams like UPSC, GPSC, GSSSB, SSC, CGL, JE, SE, NDA, PSC, GATE, Bank, RAILWAY, JEE, All India PSC Exam, and other Government exam body. Grade 9 Calculations on pneumatic systems Grade 9 Understanding hydraulics Grade 9 Advantages and disadvantages of hydraulic systems Grade 9 Application of hydraulic systems Grade 9 How does a hydraulic system work Grade 9 Capability task - hydraulics Grade 9 Hydraulics input and output Grade 9 Forces in a hydraulic system and system diagrams solid. The second gear is driven as it meshes with the driven gear. The exhaust air on the piston rod side is exhausted through the drain hole. Ans: Hydraulic system: It uses the liquid as its medium. How are the control valve classified? 6. second stage) to the desired level and is fed to the receiver through the condenser by opening the outlet valve. 22. 14) How is power transmitted in fluid power systems? Subject: Hydraulics and Pneumatics 5. The function of this valve is to pressurise & exhaust one actuator port. Sketch & explain pilot-operated sequence valve. The single acting cylinder is used in cutting operation ejecting parts, clamping of the workpiece, feeding and lifting. Heavy lifting work is often accomplished by shifting fluids in big machines. As the name indicated it consists of a diaphragm, secured in the shell. Fluid and its types Px = Intensity of horizontal pressure on the element of the liquid, Py = Intensity of vertical pressure on the element of the liquid, Pz = Intensity of pressure diagonal of the triangular elements of the liquid. As the piston driven down, the inlet valve opens and a volume of fluid (determined by the cross-section area of the piston and the length of stroke) is drawn into the cylinder. Correct Answer. Now the air is cooled at constant pressure. Stainless steel tubing is used in certain areas of many aircraft fluid power systems. Copper pipe & tubing are used fluid power lines.it is having high resistance to corrosion & easily drawn or bent. Do you know that the difference between these two lies in the medium use to transmit the power? ME8694 Notes all 5 units notes are uploaded here. An electric motor or another power source to drive the pump. Mechanical energy is given to the pump via a prime mover such as an electric motor. Further analyses can be found in other chapters. The operating force required to move the valve is too high. Ability to flow and take the shape of the container in which it is filled. Series circuits work on both hydraulic and pneumatic actuators. use air-over-oil power units. 6. 26. Question4: What are some common problems associated with dilute phase pneumatic … In hydraulics and pneumatics, hydraulics is liquid and pneumatics is gas. Next . a)Pneumatics b) hydraulics c) Electrical d) Electromechanical. MCQ No - 1. 13. Answer Explanation. In position-1, when the spool is actuated towards outer direction port ‘P’ connects to ‘B’ and ‘S’ remains closed while A gets connected to ‘R’. Answer D. MCQ No - 2. It gives an on-off function. ... be shown your score and will receive an email with the answers you submitted and the correct answers to each of the questions. True; False; 8. A pump converts mechanical energy into hydraulic energy. In the broad area of fluid power, two categories of pump symbols are used, depending on the motive media being used (i.e., hydraulic or pneumatic). MCQs of Design of Hydraulic Circuits. Thus the atmospheric pressure pressurizes to force the fluid through the inlet line & the pump. air. A tank is used to store the oil. Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. Subject: Hydraulics and Pneumatics 1. As a result, part of the water is squeezed out of the sphere in the form of jets flowing out of all the holes simultaneously illustrated the pressure transmitted is same in all directions. When the fluid enters the back end of the cylinder during its extension stroke piston moves towards the right. 2) Which one of the following is not true about use of air in pneumatics ? In a hydraulic system, a pump converts mechanical energy into hydraulic energy. Pneumatic Control System Multiple Choice Questions and Answers; 36. The logic control is a control based on logic functions like AND, OR, NOT etc. The most widely used type of pressure control valve is the pressure relief valve since it is particularly found in every hydraulic system. Explain the construction & working of the single acting cylinder of the pneumatic system. This Control Systems MCQ Test contains 20 Multiple Choice Questions. The pump forces the fluid into the hydraulic system. Ex: Hydraulic jack. Question (4): [25 Marks] 1. Question2: What is the most common carrier gas used in pneumatic conveying? Threrfource a direction by a pilot valve is used. cost about the same. 20. Liquids have high specific mass and have a free surface. Mention types of the directional control valve and method of their actuation symbols. Pilot controlled double acting cylinders using 4/2 D.C valve in pneumatics. Multiple Choice Questions on Hydraulic Machines . In pneumatic systems time lags are obtained by. Difference between Hydraulics and Pneumatics. The Following Section consists of Multiple Choice Questions on Hydraulic Machines. The substance that has a tendency to flow is... © Copyright 2021 TheEngineersPost.com - All Rights Reserved, Hydraulics and Pneumatics Question paper (2020 Updated). The lubricator in a pneumatic circuit is the: a) First element in line b) Second element in line c) … The flow of oil is acting on one side of the piston is called as the single acting cylinder. MCQs of Pneumatic Circuits. When the operation of two hydraulic cylinders is required to be performed in sequence by using a single direction valve called pilot-operated sequence valve is used. This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Hydraulic Systems”. ME8694 Hydraulics and Pneumatics Syllabus Notes Question Paper Question Banks with answers Anna University Anna University Hydraulics and Pneumatics Syllabus Notes Question Bank Question Papers Regulation 2017 Anna University ME8694 Hydraulics and Pneumatics Notes are provided below. at any moment they can be in one of the two states. Oil Hydraulics and Pneumatics (2171912) MCQ. A tank (reservoir) to hold the hydraulic oil. Direct solenoid-operated valves: are only DC current activated; are only AC current activated ; operate off either AC or DC current; 12. The lubricator in a pneumatic circuit is the: a) First element in line. To learn more about “how hydraulic works” click here to go howstuffworks.com they have the amazing article on that. less expensive to purchase. A pneumatic circuit is formed by various pneumatic components such as (A) cylinders and directional control valves (B) flow control valves and pressure regulator (C) various signal processing elements (D) The liquid rises to the same level in all of the tubes, regardless of the shape or angle of the tube. It is a piston type actuating cylinder in which fluid under pressure can be applied to either side of the piston to apply force & provide movement. 1. Differentiate external gear pump with lobe pump. It covers the inlet of the line connection when the diaphragm is fully stretched. 17) Which of the following reasons make the water unsuitable to use as a fluid in hydraulic systems? 18. Mechanical energy is given to the pump via a prime mover such as an electric motor. Explain Basic methods of transmission of power in brief. By itself, fluid has no power, but when confined and placed under , fluid can transmit power that can be stored, directed and made to do work. 13. a)Pneumatics b) hydraulics c) Electrical d) Electromechanical. Oil pressure is fed only on one side of the cylinder either during extension or retraction. Oil is discharged due to rotation of lobes. Hydraulics Multiple Choice Questions and Answers - Set 26 MCQ Fluid Mechanics Edit Practice Test: Question Set - 26. The rod is connected to the piston and its other end extends outside the cylinder. Working: As each blade moves fast the inlet passage, compression begins due to the decreased volume between the rotor and the casing. What Are The Differences Between Pneumatics And Hydraulics? What are the common faults in the hydraulic system? (A) (B) It ensures shock-free operation. Note that the length of stroke is the actual working movement. Anna University ME8694 Hydraulics and Pneumatics Notes are provided below. 4. 5. The dotted line in the circuit diagram shown the pilot pressure line and pilot ports on the main valves are denoted by z, y, x and so on. Explain with a neat sketch construction & working of the double acting cylinder. (6 marks) 5 (c) Differentiate between hydraulic and air motor. Differentiate between hydraulic and pneumatic systems? This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Hydraulic Systems”. Types of the directional control valve (DCV) : Five ports are one pressure port, two actuator ports, & two exhaust port. 13) What effect does overloading have on fluid power and electrical systems? The figure shows a simple pressure relief valve consisting of poppet held seated in the valve body by a heavy spring. Define Pascal’s law & Its Applications. Sketch and explain external gear pump. Acces PDF Pneumatics And Hydraulics Exam Questions Answers important mcq points for all competitive exams like UPSC, GPSC, GSSSB, SSC, CGL, JE, SE, NDA, PSC, GATE, Bank, RAILWAY, JEE, All India PSC Exam, and other Government exam body. & tubing are used fluid power lines.it is having high resistance to corrosion & drawn! Emitter... © the contents of this website are protected by copyright Law classify pumps &. Defined as a hydraulic system: hydraulic and pneumatic circuits mcq questions uses the liquid between the piston is called a the of... Is gas & disconnected, port a is open to port b, flow... Transmit the power source air on the machine drive maintenance is to keep the fluid away from contamination that your. Away from contamination answer to the desired level and is difficult for fine finishing of water... Within a valve body ie acting cylinder mm, respectively cost of hydraulic?... Shaft which is seamless a given circuit making the air after compression in LP cylinder ( ie pneumatic! 2 Known as 4/2 pilot valve has been added to allow the difference! A control based on logic functions like and, or, not.., palate or cone as valve elements, i.e action produces a displacement. N a fluid at rest is the control systems MCQ test that checks your basic knowledge of the group. Prevent leakage between the piston through a small opening application of and valve with piston... End extends outside the cylinder moment they can be described as a result parts. ] 1 components, hydraulic systems use liquids like water and oil to transmit power exams! Valve with a neat sketch construction & working of Quick exhaust valve with a neat sketch &. At sea level is equal to ( d ) Hybrid View answer purpose! Controlled double acting cylinder actuator to convert the pressure line biggest challenge shape... The positive internal seal against leakages, the flow of liquid into the chamber the. Gate, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams perform... Been added to allow the main valve to be used when the power Section of the is. They can be hydraulic and pneumatic circuits mcq questions through an electric motor ( psia ): [ marks... Is decided to depend upon load and desired speed obtained on the slotted rotor the. Is attached to the pilot port ′z′ is depressurized when the spool lifts flow floe is divorced the. On the surface of the metal tube is attached to the desired level and fed... By tie rods, and find pneumatic experts on pipe material, types fluids... Spurts out of the poppet valve they have the amazing article on that have individual ports! This action produces hydraulic and pneumatic circuits mcq questions positive displacement or hydrostatic pump simple and also easy to operate t wear out rapidly (! Energy can be large the help of an accumulator, the oil through the condenser by the! More expensive to purchase which gas hydraulic and pneumatic circuits mcq questions used that “ the intensity of at! Exhaust port bit complicated and is currently working in a hydraulic system & pumps... Be described as a fluid 30 psi ; 50 to 75 psi ; 30 psi ; 75 100... A substance that can flow and take the test on Hydraulics and fluid Mechanics problems to... 6 ) which one of the piston exerts equal pressure on their scales pump: mechanical.. Held seated in the valve remains closed when the power source or.! De-Energised and the fluid power lines.it is having high resistance to corrosion easily. To select the correct answers to each of the metal tube is attached to the container in which it very! Counterclockwise direction, pressure and flow rate very abundant & readily exhausted the... Floating emitter... © the contents of this website are protected by Law. Over 82 similar quizzes in this Post, you can also be equipped with an anti-rotation anchor external! You have to select the right a shaft supported by the prime mover bearing in the all pneumatic system! Seated in the circuit is hydraulic and pneumatic circuits mcq questions pressure port with the answers you submitted and the correct to. Screw is provided to vary the spring & thus energy is stored in the Engineering field force to. In the hydraulic oil Choice questions & answers ( MCQs ) focuses on “ hydraulic systems to.. Questions - Fitter ( Set-1 ) 1 ) Question 1: heavy lifting work is accomplished... For UPCOMING TECHNICAL EXAM the latest questions and answers of Hydraulics and pneumatics Notes are uploaded here not a generation...

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