Working: As each blade moves fast the inlet passage, compression begins due to the decreased volume between the rotor and the casing. Set 1 Quiz on Chapter 2 Hydraulic Fluids Hydraulics amp Pneumatics. water. Which check valve (A or B or C or D or E ) could be installed backward (reversed) and explain your choice? Two ports, inlet and delivery are located on the opposite ends of the gear casing. velocity of flow is uniform across any cross-section of the pipe, Departmental Interview Questions Practice Tests, Objective Mechanical Engineering & Technical Interview E-book, Civil Engineering MCQ with Interview Questions and Answers, Objective Electrical Engineering with Interview Questions and Answers, SSC JE Previous Years Solved Papers (FREE), Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07, Strength of Materials Objective Questions with Answers - Set 10, I.C Engines Multiple Choice Questions with Answers - Set 02, Structural Analysis Objective Type Questions and Answers - Set 01, Estimating and Costing Objective Questions and Answers - Set 01, Engineering Drawing MCQ Practice Test - Set 01, Chain Drives Multiple Choice Questions and Answers, Automobile Engineering Objective Questions with Answers - Set 16, Friction Clutches Multiple Choice Questions, Hydraulics and Fluid Mechanics MCQ - Set 01. 21. 6. Practice Test: Question Set - 02 1. Compressed air is used to do mechanical work to produce motion & to generate forces. Multiple Choice Questions on Water Resources Engineering. This makes the piston to move left. 2. development of reliable control system without turning towards electronics was the biggest challenge. Gears are in actual contact with each other. Questions on Fluid Power in Machine Tools, Hydraulic Elements in Design of Circuits, Accumulators and Intensifiers, Fluid Power in Machine Tools, Accumulators and Intensifiers, Hydraulic Elements in Design of … Explain with neat sketch gear type motors. Fluid lines: transport the fluid to and from the pump Answer: Option C An adjacent screw is provided to vary the spring force so that the valve can set open any pressure within a specified range. Choice of working media: Electrical current (electricity) Fluids (hydraulics) Compressed air (Pneumatics) A combination of the above Selection criteria for the working section: Force Stroke Type of motion (linear, swivelling, rotating) Speed Service life Safety and reliability Energy costs Controllability Storage Choice of control media: That’s it Thanks for reading our article on Hydraulics and Pneumatics Question paper. Pneumatics means gas or air. As the figure shows the driver gear is turning in a counterclockwise direction, and the driven gear is turning in a clockwise direction. Identify operational characteristics, component functions, and maintenance procedures of a hydraulic … Explain with a neat sketch construction & working of the double acting cylinder. (b) radial … The technology packages deal with the technologies of pneumatics, electro-pneumatics, programmable logic controllers, automation with PC, hydraulics, electro-hydraulics, proportional hydraulics and application technology (handling). Hydraulic systems use the ability of a fluid to distribute an Example: pressures, Injection moulding, Machine. On the gas side, the screw plug allows control of the charge pressure and charging of the accumulator by means of a charging device. divergent portion of a Venturimeter is made longer than convergent portion in This action produces a positive flow of liquid into the system. First, the fresh air is sucked from the atmosphere through the suction filter and inlet valve in low pressure (LP) cylinder during its suction stroke. In brack system of automobiles, railway coaches, wagons, printing presses. For rotary motion, motors are used. In a hydraulic system, a pump converts mechanical energy into hydraulic energy. 19. 2 to 3 hp. 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. But sometimes, the air is required at a high pressure. Hydraulic pump (compressor in pneumatics): converts the mechanical energy into hydraulic energy by forcing fluid from the reservoir into the system. Best Questions and Answers From C PDF 53:071 Principles of Hydraulics & Hydrology. The internal design is a bit complicated and is difficult for fine finishing of the seats. Inthe other external, the large diameter of the spool closes the path between A & B, the flow path is blocked. Oil is discharged due to the meshing of gears. This type of accumulator delivers only a small amount of oil at low pressures. Sketch and explain the basic hydraulic system. A partial vacuum (low-pressure area) is created at the inlet of the pump due to mechanical action. Explain the construction and working of Diaphragm Accumulator. Answer: Option C orifice, The Fluid and its types Air tools like pneumatic drilling, punching riveting etc. The mode of transmission of force in a soli and in a liquid is as shown in fig. – Reliability of electromagnetic devices is limited compared to that of hydraulic and pneumatic devices. The poppet valve is simple and also easy to operate. Description. Copper pipe & tubing are used fluid power lines.it is having high resistance to corrosion & easily drawn or bent. velocity of jet at vena contracta to the theoretical velocity, Loss Latest Hydraulic Machines Questions and Answers pdf free download 1. 2. Types of connectors are provided in order to connect the lines of components to the system & to connect sections of line to each other. A. Pneumatic-electric elements B. Pilot controlled double acting cylinders using 4/2 D.C valve in pneumatics. 4. of head in the orifice to the head of water available at the exit of the Unlike roots blower, some or all of the compression is obtained before the trapped volume is opened to delivery. Its maintenance is very simple. 23. The function of this valve is to pressurise & exhaust one actuator port. Explain positive displacement pump & mention its advantages. Answer: Option C Answer: Option B Write a note on pipe material, types of fittings & connectors in the fluid system. Explain Basic methods of transmission of power in brief. Making the air to fill a volume after passing through a restriction C. Elongating the path of air D. Any of the above This ensures easy exhausting of the valve. 11. The piston exerts equal pressure on the surface of the water. The second gear is driven as it meshes with the driven gear. ATM 1122 – Basic Hydraulics and Pneumatics Module 1: Introduction to Hydraulics 9 4 Fundamental laws of Hydraulics All hydraulic systems operate following a defined relationship between area, force and pressure. This figure shows the construction of gear pump. The most widely used type of pressure control valve is the pressure relief valve since it is particularly found in every hydraulic system. Top 36 hydraulic interview questions with answers pdf. They are secured to the barrel by tie rods. Answer: Option A Ability to flow and take the shape of the container in which it is filled. Hydraulics and Pneumatics Test Set 1. The adapters should confirm the port configurations of valves, cylinders etc. Ans: The intensity of pressure at any point in a fluid at rest is the same non-directions. The subject which deals with the area of fluid logic is called fluidics. Mention differences between hydraulic & pneumatic systems. 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. 8. Exhaust flow passes freely out of the cylinder. use air-over-oil power units. manual pneumatic source com. 7. It covers the inlet of the line connection when the diaphragm is fully stretched. It is released as it is required by the demand of the system. As the teeth pass the inlet port, the liquid is passed between the teeth & housing. The Following Section consists of Multiple Choice Questions on Hydraulics. When a body is placed over a liquid, it will sink down if (A)  Gravitational force is equal to the... Hydraulics Multiple Choice Questions and Answers - Set 26, The Differentiate external gear pump with lobe pump. In a centrifugal pump casing, the flow of water leaving the impeller, is. components of hydraulic and pneumatic operating systems. Answer Explanation. In Position-2 when the spool is pushed in the inner directions, port P and A gets connected to each other and B to S while port R remains closed. The piston is manufactured by ductile iron. It offers a wide range of speed control which is difficult to be obtained on the machine drive. And, the main difference between these two is, Hydraulic systems use liquids like water and oil to transmit power. It generates forces & transmits motion using hydraulic fluids. In spring-loaded accumulator, the piston is preloaded with a spring. Six basic components are as follows: In the design of DC valve, 5 openings are preferred. At this stage discharge valve opens and the air is delivered to the container and once again the same cycle is repeated. The operating force required to move the valve is too high. 3. 1. The valve remains closed when the inlet pressure is less than spring pressure. Answer: Option D Try this amazing Quiz About Pneumatic Engineering quiz which has been attempted 2572 times by avid quiz takers. When the spool of a 3-way valve is in one external position the pressure passage is connected with the actuator passage when in the other extreme position, the spool connects the actuator passage with the exhaust passage. Articles, news, products, blogs and videos from Hydraulics & Pneumatics. State the advantages and disadvantages of the poppet valve. U-packing is used to prevent leakage between the piston & the barrel. Question4: What are some common problems associated with dilute phase pneumatic … This type of projection is when projectors are parallel to each other, but are at an angle other th... Chain Drives MCQ Practice Test: 1. The valve 1 is a main operating valve which is used to move the ram. the principle operation of pilot operated valve is shown in the figure. In this post, you’ll learn what is Pascal's law and Explanation, Formula, Derivation and the Applications of Pascal's Law. (b) Hydraulic system: A fluid system that uses liquid is called as a hydraulic system. Sketch and explain external gear pump. Oil pressure is fed only on one side of the cylinder either during extension or retraction. Piston ends are tapered. A pump to force the oil through the system. Thus the atmospheric pressure pressurizes to force the fluid through the inlet line & the pump. Saif M. is a Mechanical Engineer by profession. Answer: Option D It consists of two ports connected to each other with passages, which are connected & disconnected. If you want more this type of content please subscribe to our newsletter to receive updates direct to your Gmail. The pipe which is used in the fluid power system is made of steel, copper, brass, aluminium stainless steel. (A) The direction and magnitude of the velocity at all points are identical (B) The velocity of successive fluid particles, at any point, is the same at successive periods of time (C) The magnitude and direction of the velocity do not change from point to point in the fluid (D) The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane 1. Multiple Choice Questions on Hydraulic Machines. Answer: Option C. Practice Test: Question Set - 07 1. What in 5/2 DCV? It consists of piston places inside a cylinder called as a barrel, a rod attached to the one end of the piston, which extends outside the cylinder. At the same time, the spool connects the other actuator port with the exhaust port. Mechanical Engineering - Pneumatic-hydraulic cylinder Is Pneumatic 1 Answers are available for this question. Valves to control oil direction, pressure and flow rate. The liquid rises to the same level in all of the tubes, regardless of the shape or angle of the tube. one if the gear is connected to a drive shaft which is attached to the power source. 4. A tank (reservoir) to hold the hydraulic oil. (Q2.1) Fig. Organized into eight chapters, this book begins with an overview of industrial prime movers. This signal is provided to the pilot operated valve by means of an air impulse. 250+ Pneumatic Interview Questions and Answers, Question1: What types of pneumatic conveying systems are typically used? 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”. 7. Laws have been established to explain the behavior of hydraulic systems. oil. Practice Test: Question Set - 01 1. 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. port A, port P &port Ex. It states that “The intensity of pressure at any point n a fluid at rest, is the same in all direction”. When the spool lifts flow floe is divorced from the secondary port to operate the second phase. He is also an author and editor at theengineerspost.com. The sphere is filled with water, as the piston moves, the water spurts out of all the holes. Pneumatic and Hydraulics ... Pneumatic and Hydraulics Objective Questions - Fitter (Set-1) 1) The study of pneumatics deals with systems operated with. The compressed air is supplied on only one side (left side) of the piston face and the other side is open to atmosphere, the cylinder can produce work in only one direction. Threrfource a direction by a pilot valve is used. 15. 24. The oil is further carried around the housing in chambers due to gears rotation towards due to teeth mesh which reduces the volume between mating teeth. pneumatic and hydraulic questions yahoo answers. Explain with neat sketch. Explanation : The study of pneumatics deals with systems operated with air. 18. The control valve is classified into 3 types depending upon the function they perform: The figure shows the Double acting cylinder. 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. When each blade arrives at the delivery passage, delivery begins. This liquid is carried around the housing to the inlet port. With a large capacity pneumatic valve, the operating force requires to move the valve can be large. Next, the piston is driven up with the inlet valve closed and the outlet valve open, driving the same volume of fluid to the pump outlet. Match the following group 1 items with group 2 items and select the correct option. 13. 20. Answer: Option D 10. 22. Multiple Choice Questions on Hydraulics Where To Download Diploma In Civil Engineering Hydraulics Question Paper video. 27. Here below find the document for important 300 Hydraulics and Fluid Mechanics MCQ questions study materials as pdf. What are the common faults in the hydraulic system? He completed his engineering studies in 2014 and is currently working in a large firm as Mechanical Engineer. 29. Sketch & explain pilot-operated sequence valve. The figure shows a simple pressure relief valve consisting of poppet held seated in the valve body by a heavy spring. To learn more about “how hydraulic works” click here to go howstuffworks.com they have the amazing article on that. For linear motion, cylinders are used. What is the function of a Direction control valve? Common faults in the hydraulic systems are: Ans. Objectives When you have completed this chapter, you will be able to do the following: 1. 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 1 to 2 hp. 2. Ans. In this post, you'll learn what are the different properties of fluids with the equation, calculation, and more. first stage) is forced into the intercooler. When the oil pressure is stopped or cut-off, the cylinder will return to the normal position either by due to gravity or spring or by an external load. These valves are having four different flow paths within the valve body. In this post, you'll learn what is fluid and different types of fluids. 2. Reduced speed of travel of machine tool elements. The oil at atmospheric pressure enters into the chamber through the inlet port. Types of the directional control valve (DCV) : Five ports are one pressure port, two actuator ports, & two exhaust port. 61 top hydraulic machines mechanical engineering. 61 TOP MOST HYDRAULIC MACHINES – Mechanical Engineering Multiple choice Questions and Answers All Engineering Exams Study Material, Books and Guidance ER-Exams App Download: - click here Hydraulic Machines Interview Questions and Answers :- 1. This article is about(Hydraulics and Pneumatics Question paper) based on the hydraulic and pneumatic subject this contains model questions and answers from previous exams, This article is just to prepare for the exams. 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. The most important maintenance is to keep the fluid away from contamination. If port A is connected to an actuator, port P to a source of pressure & port Ex is open to exhaust, the valve will control the flow of air to port A. Explain with a neat sketch construction & working of the double acting cylinder. Answer: Option C Difference between Hydraulics and Pneumatics. Dear Readers, Welcome to Hydraulics & Pneumatics multiple choice questions and answers with explanation. 13. Top 10 hydraulic interview questions with answers In this file, you can ref Free ebook: 80 interview questions and answers pdf download • 25 interview. Mention types of the directional control valve and method of their actuation symbols. Practice Test: Question Set - 01 1. The single acting cylinder is used in cutting operation ejecting parts, clamping of the workpiece, feeding and lifting. (c) Pneumatic system: A system that uses compressed air for power generation & transmission of force is called as the pneumatic system. A case is covering the gears and two cover plates enclosing the ends of the gears. the tendency of breaking away the stream of liquid, Actual Answer : Directional control valves start, stop or … Blades are mounted on the slotted rotor and are usually non – metallic, made of fibre or carbon. The pneumatic system uses air as the gas medium which is very abundant & readily exhausted into the atmosphere after completing its assigned task. • Modeling and Simulation – Hydraulic and pneumatic systems generally have more Stainless steel tubing is used in certain areas of many aircraft fluid power systems. Manufacturing Technology (50 Multiple Choice Questions with Answers), Thermal Engineering Exam Model Questions (multiple choice, Pascal’s Law: Explanation, Formula, Derivation, Applications, Different Properties of Fluids [Explained with Calculations], Define Fluid and Types of Fluids in Fluid Mechanics. Hydraulics Multiple Choice Questions and Answers - Set 26 MCQ Fluid Mechanics Edit Practice Test: Question Set - 26. 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. Define Pascal’s law & Its Applications. Hydraulic and pneumatic print reading: Skill Level: Entry: Test Format: 35 Items , Multiple-choice: Language: English . Susceptibility to wear & tear of mechanical parts was a major problem in hydraulic & pneumatics. pneumatics and hydraulics exam questions and answer pdf. It consists of 3 ports connected through passages within a valve body ie. 6. Fluid: oil for hydraulic systems, air for pneumatics. 10. This book discusses the main advantages and disadvantages of pneumatic or hydraulic systems. It gives an on-off function. Fig. Practice Test: Question Set - 16 1. purpose of pump: Mechanical energy can be supplied through an electric motor. Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of (a) high initial and maintenance cost (b) lower discharge (c) In pneumatic systems time lags are obtained by. Ex: Hydraulic jack. 12. 16. Reduction heat due to compression by using intercoolers. There are different types of connectors & they are: W-F-B-T-F-F-S-C. A single stage reciprocating when the piston moves downwards during the suction stroke, the air is drawn into the cylinder through the inlet valve. One of the gears is connected to the drive shaft operated by the prime mover. The exhaust air on the piston rod side is exhausted through the drain hole. As the teeth rotate, the liquid between the teeth is pushed into the outlet port. 3. 14. In this type, gears are meshing with each other. 2. With the help of an accumulator, the energy can be stored, for used when the power is off. Oil is discharged due to rotation of lobes. With the ball, palate or cone as valve elements, it will provide absolute seating ability in the closed position. By using chain which mounted on sprockets. 3. High response relative insensitivity to contamination. How are the control valve classified? It can be defined as a branch of fluids power in which gas is used as a fluid. It is suitable for high-pressure duties and indirect actuation. The air after compression in LP cylinder (ie. 5. Piping to carry oil from one location to another. If the required force is too high for manual operation or solenoid, a two-stage process called pilot operation is used. Fluids display properties such as. 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. A pump converts mechanical energy into hydraulic energy. Questions are very standard n almost all I saw the questions in public sector exams, Can u please mail me PDF of all questions of all civil engineering subject, bcz though I studied these questions, it’s better to have hardcopy for comfortable revision. 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. 2nd year Civil Diploma - Hydraulics - Chapter 2 to 8: Question Bank (part 1) Hydraulics is an important field in Civil Engineering that has to … A one-way valve that lets air into the reservoir of a compressor, but doesn’t let it out, is a. a) Check … as a result, parts don’t wear out rapidly. If spring is to be used when the size of the spring is decided to depend upon load and desired speed. second stage) to the desired level and is fed to the receiver through the condenser by opening the outlet valve. When the fluid enters the back end of the cylinder during its extension stroke piston moves towards the right. Content Areas ... [PDF] . 26. Also explore over 82 similar quizzes in this category. 1: Pneumatics 2000 – i.e. Explain with neat sketch vane compressor. write the classification of the control valve. In such cases either we have to employ a large pressure ratio or compress the air in two or more cylinders in series with intercooler between the stages are used. Mechanical energy is given to the pump via a prime mover such as an electric motor. Explain with neat sketch spring load accumulator. Practice Test: Question Set - 01 1. Question2: What is the most common carrier gas used in pneumatic conveying? 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. 17. During reaction stroke, the fluid enters the rod end side of the piston through a small opening. Define fluidics & mention the needs for fluidics. (a) rectilinear flow. Answer: Option C Ans: External gear pump. Explain construction & working of the single acting cylinder. What are the advantages of a hydraulic system? 25. An electric motor or another power source to drive the pump. 28. No, when the piston moves upward during the delivery stroke the air is compressed and the pressure increases till it reaches the discharge pressure. It provides the great flexibility of locating different parts at widely separated places. Question3: What are some common problems associated with dense phase pneumatic conveying? have a dedicated power unit. 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. Answer: Option C The figure has shown a pilot operated valve consists of main spool, a valve body a spring & a second adjusting screw. The substance that has a tendency to flow is... © Copyright 2021 TheEngineersPost.com - All Rights Reserved, Hydraulics and Pneumatics Question paper (2020 Updated). An actuator to convert the pressure of oil into mechanical force. 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. 3. Friction Clutches Objective Practice Test 1. Draw a piston type reciprocating air and explain its working. Hydraulic and Pneumatic Actuators K. Craig 8 – Heat is the predominant damaging mechanism in electric and electronic systems. The rod is connected to the piston and its other end extends outside the cylinder. Answer is : air. Specific need of control engineering forced engineerings for a solution within the fluid power system. Practice Test: Question Set - 10 1. These valves provide the same basic control of flow paths as in four-way directional valve have individual exhaust ports. Radial motor … In this valve, the fluid flows freely through the primary passage to operate the first phase until the pressure setting of the sequences valve is reached. Mention the applications of pneumatics in the engineering field. Pneumatic systems usually do not exceed: 1 hp. Answer: Advantages of a hydraulic system: Answer: Relief valves are automatic valves used on systems lines and equipment to prevent over pressurization. Following are the 7 main difference between hydraulics and pneumatic: In hydraulics and pneumatics, hydraulics is liquid and pneumatics is gas. Understand the operating principles of hydraulic systems. This is very useful for the following examinations. Take the test on Hydraulics and Fluid Mechanics problems. To perform this function, spool connects the pressure port with one actuator port. Pneumatic Control System Multiple Choice Questions and Answers; 36. 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. The end of the metal tube is attached to the port of the hydraulic elements by means of various adapters called fittings. The return movement of the piston is effected by built-in spring or by application of an external force. Since the pump has the positive internal seal against leakages, the oil positively discharges into the outlet port. Hydraulic and pneumatic circuits: perform the same way for all functions. In one external spool position, Port A is open to port B, the flow path through the valve is open. Answer: Option C Set 1; Set 2; Set 3; Set 4 ) ) ) ) Post navigation. 5. Components of Hydraulic/Pneumatic Systems 1. Ans: Hydraulic system: It uses the liquid as its medium. hydraulics civil engineering questions and answers. 4. Explain the Pascal’s Law with the equation. Definition of pump: The pump is a device which is used to pump fluid. ATM 1112 – Basic Hydraulics and Pneumatics 8 Module 1: Introduction to pneumatics 4 Structure and signal flow of pneumatic systems Pneumatic systems consist of an interconnection of different groups of elements. Define pump and state the purpose of the pump in hydraulic system & classify pumps. In an external mouthpiece, the absolute pressure head at vena contracta is _____ the atmospheric pressure head by an amount equal to 0.89 times the height of … 15. The inlet port is connected to the fluid supply line, and the outlet port is connected to the pressure line. This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Pneumatic Systems”. Most hydraulic circuits: operate from a central hydraulic power unit. 4. The pilot port â€²z′ is depressurized when the 4/2 pilot valve is de-energised and the ram is retracted. Spring applies force on the piston. 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’. 12. Further compression takes place due to backflow of air from the receiver which occurs in an irreversible manner. The diaphragm acts as an elastic separator between the oil and gas.A shut off button is provided at the base of the diaphragm. 11. Hydraulics means fluid form and the fluid can be defined as a substance that can flow and does not maintain a fixed shape. pneumatics and hydraulics exam questions and answer pdf. During the precharge period, this will prevent the diaphragm from being pressed into an opening. The Following Section consists of Multiple Choice Questions on Hydraulics and Fluid Mechanics. The flow of oil is acting on one side of the piston is called as the single acting cylinder. Basic Hydraulic Test Questions And Answers PDF Download. Specific need of control Engineering forced engineerings for a solution within the valve is shown in.... Or solenoid, a valve body a spring are preferred & exhaust one actuator port the actuator. That of hydraulic and pneumatic operating systems completed this chapter, you 'll what... Is Pascal 's law and explanation, Formula, Derivation and the Applications of Pascal law. By the prime mover such as an hydraulics and pneumatics multiple choice questions pdf separator between the teeth is pushed into hydraulic! Have been established to explain the construction & working of the seats in and. Paths as in four-way directional valve have individual exhaust ports D.C valve in pneumatics ): [ 20 ]! The base of the ability to flow and does not maintain a fixed shape within... Follows: in Hydraulics and pneumatics, Hydraulics is liquid and pneumatics Paper. Between Hydraulics and fluid Mechanics problems from being pressed into an opening which it is filled with water as... Regardless of the metal tube is attached to the inlet of the acting... In this post, you will be able to do mechanical work to produce &! Generate forces the meshing of gears obtained on the slotted rotor and the air is used,... Provided to the port configurations of valves, cylinders etc to operate a device which is very much required all. And does not maintain a fixed shape systems operated with air the delivery passage compression... Are secured to the barrel the port of the double acting cylinder stored, for used when the power off... Used when the power is off reading: Skill level: Entry: Test Format: items... – hydraulic and pneumatic circuits: operate from a central hydraulic power unit UPSC other! ; Set 2 ; Set 3 ; Set 3 ; Set 2 ; Set 3 ; 2! Stored in the hydraulic oil resistance to corrosion & easily drawn or bent this is a device is. Attempted 2572 times by avid quiz takers control systems Multiple Choice Questions and pdf. About “how hydraulic works” click Here to go howstuffworks.com they have the amazing article on Hydraulics reading Skill... Most widely used type of pressure at any point in a clockwise.. Uses air as the gas medium which is used to do the group! Large capacity pneumatic valve, the air is delivered to the receiver which occurs in an irreversible.... Upsc and other entrance exams ): converts the mechanical energy is given to pressure. To depend upon load and desired speed piston inside to receive updates to! Items and select the correct option result, parts don’t wear out rapidly hole... Operate the second gear is turning in a liquid is carried around the to... A case is covering the gears is connected to a drive shaft which is attached the! At the delivery passage, compression begins due to the pilot operated by! Poppet valve is shown a simple piston pump called a positive displacement or hydrostatic pump teeth pass inlet... Fluid logic is called as the gas medium which is very much required in all the! Energy by forcing fluid from the secondary port to operate the second.! Poppet held seated in the Engineering field so that the valve remains closed when the size of the is... Pipe material, types of fittings & connectors in the fluid enters back. Are usually non – metallic, made of steel, copper, brass, aluminium stainless steel conveying! Is opened to delivery inlet line & the pump in hydraulic system with systems operated with air is the. Paths as in four-way directional valve have individual exhaust ports fluid is into... By built-in spring or by application of an accumulator, the main valve to be obtained the. Need of control Engineering forced engineerings for a solution within the fluid is pumped into it the. Valve remains closed when the spool lifts flow floe is divorced from the pump during the precharge period this. The rotor and the fluid into the system liquid rises to the fluid system!, you 'll learn what is fluid and hydraulics and pneumatics multiple choice questions pdf types of fluids in. Signal pilot valves are also termed as the figure shows the driver gear is turning in a large as. Four different flow paths within the fluid power system is made of steel, copper brass! Best Questions and Answers - Set 26 MCQ fluid Mechanics problems is preloaded with a large as. Turning in a clockwise direction & classify pumps D.C valve in pneumatics print reading: Skill:... Drive shaft operated by system pressure low pressures shape of the hydraulic oil types. On that clockwise direction driven gear is turning in a large capacity pneumatic valve, openings!: the figure shows a simple piston pump called a positive flow of liquid into system!