This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Pneumatic Systems”. Or. Explanation: Operating cost that is the cost of the operating or using it practically in daily life and operating cost of hydraulic systems to pneumatic systems is less. None of these. Pneumatic systems used in industry are commonly powered by compressed air or compressed inert gases.A centrally located and electrically-powered compressor powers cylinders, air motors, pneumatic actuators, and other pneumatic devices. View Answer, 2. These … Pneumatic Testing as per ASME B31.3 ASME B31.3 section 345.5 specifies requirements of pneumatic testing. to develop the same force. When comparing first cost of hydraulic systems to pneumatic systems, generally they are: 3. Even though pneumatic systems usually operate at much lower pressure than hydraulic systems do, pneumatics holds many advantages that make it more suitable for many applications. Join our social networks below and stay updated with latest contests, videos, internships and jobs! When comparing operating cost of hydraulic systems to pneumatic systems, generally they are. A Dot. 11) Pneumatic systems usually do not exceed: (a) 1 hp (b) 1 to 2 hp (c) 2 to 3 hp (d) 4 to 5 hp ANS-a 12) Hydraulic and pneumatic circuits: (a) Perform the same way for all functions (b) Perform differently for all functions (c) Perform the same with some exceptions (d) Does not perform all the functions ANS-c 13) In an open loop … b. 7. We'll assume you're ok with this, but you can opt-out if you wish. MCQ in Industrial Electronics Part 8 of the series as Electronics Engineering topic in ECE Board Exam. * Spool valves may be built for more than two switching positions, but then the spool is normally spring centred, see Figure 3.16, or hand lever operated with detented … d) Does not perform all the functions. 2 to 3 hp 4. 1. This website uses cookies to improve your experience. ... ‖ do not exceed the “conservative” bounds ... X. Liu, T. WangTrajectory tracking control for double-joint manipulator systems driven by pneumatic … when residual water can damage the piping system. Which Instrument is at Fault in this System? d) Third element in line. a) True b) Second element in line Explanation: Series circuits are the circuits that in which the elements are connected in series and do not work on both hydraulic and pneumatic actuators. A pinoybix mcq, quiz and reviewers. Format of Pneumatic Test Procedure Test procedures ≤ 1677 kJ stored within the pneumatic test limitations may be developed and submitted by a licensed contractor using an application-specific or standard pneumatic test procedure format. b) Use air-over-oil power units c) Last element in line Fluid power circuits use schematic drawings to: a) Simplify component function details Air. 1. c) Perform the same with some exceptions Modes of aircraft cabin pressurization operation control are isobaric mode and constant differential mode, the cabin pressure controller is the device used to control the cabin air pressure. Pneumatic reservoirs are usually simple tanks and their symbology is usually some variation of the cylinder shown in Figure 20. The lubricator in a pneumatic circuit is the: Mechanical Engineering. Four point starter 4. d) None of the mentioned. This group of elements forms a control path for signal flow, starting from the signal section (input) through to the actuating section (output). d) None of the mentioned These systems are often powered by fans and not by positive … Automobile Engineering. Adjustments and settings on the pressure controller are the control input parameters for the cabin pressure regulator. (33 sq. Hydraulic and pneumatic circuits: Pneumatic control valves in electronic control loops should be equipped with a 24-V. D.C. device (convertor or transducer) to convert 4–20 mA, D.C. electronic instrument signal to a 0.2–1 barg pneumatic signal.Control valves should be furnished with pneumatic type (or DC electric-pneumatic) positioners in the following … View Answer, 7. ... its nozzle pressure may not exceed … d) Make untrained person to understand. When comparing first cost of hydraulic systems to pneumatic systems, generally they are: a) More expensive to purchase Answer.4. a) More expensive to operate Because pneumatic pressures … b) Synthetic fluid 345.5.1 Precautions. c) Have a dedicated power unit 4. Such systems are in use in hospitals nationwide; the 19th-century technology is enhancd by recent refinements in pneumatic braking. All of the above. Most hydraulic circuits: operate … On very critical applications, use “A” at PSI rP. a) Perform the same way for all functions While these systems are the same in many aspects, they can have very different characteristics in certain ways. 8. b) Perform differently for all functions Explanation:-Relay. c) Water a) Perform the same way for all functions Pneumatic systems usually do not exceed: d) 4 to 5 hp Pneumatic systems usually do not exceed a)1 hp b) 1 to 2 hp c) 2 to 3 hp d) 4 to 5 hp CORRECT ANSWER-1hp At the end of each ride, pneumatic power is usually responsible for the brake systems that bring each coaster to a stop, so every rider can exit their seats in total safety. Explanation: Hydraulic circuits are the circuits where the operation involves conversion of the hydel power into the electrical energy so that it can be stored and used and these operate from a central hydraulic power unit. (33 sq. c) 2 to 3 hp Commercial load for radio shall not exceed ____ minutes for a one-hour program outside Metro Manila . Accept Read More, Conductivity Transmitter Calibration Procedure, Level and Density Measurement Objective Questions, Instrumentation Diagrams Multiple Choice Questions, Dissolved Oxygen Analyzer Questions and Answers, Ion Selective Electrodes Questions and Answers. compressor can also get very hot and should not be in direct contact with anything else. a. not to be compared to a hydraulic symbol used for the same function. 4. b) Make it so only trained persons can understand the functions d) Does not have dedicated power unit View Answer, 5. c) Water Beca… Most hydraulic circuits: c) Have a dedicated power unit Pneumatic systems usually do not exceed: a) 1 hp b) 1 to 2 hp c) 2 to 3 hp ... To practice all areas of Control Systems, here is complete set of 1000+ Multiple Choice Questions and Answers. Modern aircraft often combine pneumatic… Limit switches should be fixed in such a way that they contact the trip cam of the cylinder only in the determined direction. in.) a) First element in line View Answer, 9. 4. b) The same as a hydraulic symbol used for the same function a) Operate from a central hydraulic power unit Two point starter 2. A standard pneumatic test procedure for pressure piping systems may be used with the following limitations: i) The stored energy value will not exceed 1677 kJ, ii) The pressure piping system is made of P-1 or P-8 materials, iii) The test medium is air or nitrogen, iv) Testing will be conducted at a temperature at least 17°C (30°F) above … in.) 4 to 5 2. a) 1 hp * Spool valves may operate without elastomeric seals if the spool to body tolerance is kept small (below 0.003 mm) and fluid pressure does not exceed 900 kPa (9 bar). A pneumatic cylinder using 100 psi air would need a bore of almost 6½ in. Most hydraulic circuits: a) Operate … Pneumatic testing decision system must be in place for an engineering firm. For example: remote outdoor applications may use dry nitrogen gas in place of compressed air to eliminate freezing problems. Hydraulic reservoirs can be much more complex in terms of how the fluid is admitted to and removed from the tank. Important 3. b) False View Answer, 4. d) Gel. 1. Explanation: Both circuits hydraulic and pneumatic are similar in functionalities and complexities but pneumatic are preferred over hydraulic as pneumatic systems are cleaner. Electrical Engineering. c) Make the drawing look impressive b) Less expensive to operate Difference between them, Electrical & Instrumentation QC Interview Questions, Start Stop of one Motor from the same Push button PLC program. 20 . _____ compressors are generally used in pneumatic power systems where comparatively large amounts of oil-free air are needed and can also supply large quatities of air at 80 to 120 psi. b) 1 to 2 hp d) Cost is not required c) Not to be compared to a hydraulic symbol used for the same function Explanation: The representation for hydraulic and pneumatic systems are different and for creating the easy readability and symbols for both used for the same function. The lifecycle expectancy for pneumatic tube systems in hospitals is estimated at 10 years, our systems usually go double that and still perform daily, although we do recommend it does not exceed 15 years. c) 2 to 3 hp The compressor can be mounted on or off-board the robot. Answer: a. 7. c) Last element in line Series circuits work on both hydraulic and pneumatic actuators. Find the pneumatic system component A) FRL unit B) Pump … 1 to 2 hp. d) Gel Readily available nitrogen gas is not hazardous to the atmosphere or humans. c) Cost is same to operate Do not operate the electrical limit switch manually during fault finding (use a tools only). A recommended typical piping schematic for pneumatic test is shown in . Control elements control the actuating elements in accordance with the signals received from the … View Answer, 8. Answer-Two point starter. Fluid most commonly used in pneumatics. Pneumatic test procedures > 1677 kJ that are not within the pneumatic test … Pneumatic Products - Parker Hannifin. View Answer. b) Use air-over-oil power units c. 25 . 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. Series circuits work on both hydraulic and pneumatic actuators. A pneumatic symbol is: different from a hydraulic symbol used for the same function. ... ⇒ In pneumatic systems time lags are obtained by pneumatic-electric elements making the air to fill a volume after passing through a restriction elongating the path of air Pneumatic systems in fixed installations, such as factories, use compressed air because a sustainable supply can be made by compressing atmospheric air. 2 to 3 hp. To convey this information, symbology conventions have been developed. b) Less expensive to operate d) Make untrained person to understand c) Make the drawing look impressive Pneumatic … An electric device that is designed to interpret input conditions in a prescribed manner and after specified conditions are met to respond to cause contact operation or similar … Digital circuits and systems Multiple choice questions for electronics engineering competitive examinations. PART 1: ... Series of MCQ in Electronics Systems and Technologies. The air usually has moisture removed, and a small quantity of oil is added at the compressor to prevent corrosion and lubricate … d) 4 to 5 hp. Negative airlift systems are a variation of vacuum dilute conveying systems. This is used on a pneumatic schematic to show that two crossing lines are connected. 2008-3-17 Note: Use “A” constant at PSI rP for most applications. c) Cost is same a) Different from a hydraulic symbol used for the same function Fluid power circuits use schematic drawings to: The air reservoir acts like a pneumatic … However, PAM systems usually have high nonlinearities, uncertainties, and time-varying characteristics, which bring challenges for accurate dynamic modeling and controller design. Three point starter 3. Sanfoundry Global Education & Learning Series – Control Systems. 6. 15 . The compressor should be wired directly to the “OMPRESSOR OUT” Weidmuller connectors on the pneumatic control module (PCM). Pneumatic testing is used where hydrostatic testing cannot be used e.g. Understanding High Integrity Pressure Protection Systems (HIPPS), What is FAT and SAT? Answer –1 hp. b) 1 to 2 hp 1 hp. Explanation: Blueprint of any structure is the model that replicates the functions of the original model makes the functional details easy to understand. Hydraulic motors are usually rated in A) Newton meters B) KW hour C) Horsepower D) Pounds force 8. d) Cost is not required. You will find in many cases, a 10 PSI P is not detrimental, and … blee37 sends along a writeup from the School of Medicine at Stanford University on their pneumatic tube delivery system, used for sending atoms not bits. The lubricator in a pneumatic circuit is the: a) First element in line D) Rodless cylinder 14. With the same pressure at either end a single rod end cylinder has. Following is the list of multiple choice questions in this brand new series: MCQ in Broadcasting and Cable TV System . c) Perform the same with some exceptions - 1000+ Multiple Choice Questions & Answers in C with explanations - Lots of MCQs with C code/programming snippet and its output - Every MCQ set focuses on a specific topic in C Language - C … used when there is a frequent need to connect and disconnect a hose. Even though pneumatic systems usually operate at much lower pressure than hydraulic systems do, pneumatics holds many advantages that make it more suitable for many applications. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. to develop the same force. View Answer, 10. Do not exceed 100 psi. A pneumatic cylinder using 100 psi air would need a bore of almost 6½ in. a) Different from a hydraulic symbol used for the same function Use only low voltages of ≤ 24 V. 8. Relays are switches that open and close circuits electromechanically or electronically. A) 0.114 m3/min B) 11.4 m3/min C) 7.916 m3/min D) 0.126 m3/min 7. Quick Connect Fittings. d) Cost is not required, a) Mineral oil a) More expensive to operate The air reservoir stores the pressurized air used to operate the pneumatic circuit components. Most fluid power circuits use compressed air or hydraulic fluidas their operating media. dust. Question-7.For the protect on of DC series motor, commonly used starter is. Pneumatic systems usually do not exceed: a) 1 hp c) Cost is same to operate b) Synthetic fluid A pneumatic system controlled through manual or automatic solenoid valves is … When comparing operating cost of hydraulic systems to pneumatic systems, generally they are. b) Perform differently for all functions 2. 1. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. ... four-way pneumatic valve is usually accomplished by springs located at each end of the control element. d) Cost is not required … b) Make it so only trained persons can understand the functions Do not reverse the compressor! Explanation: Hydraulic fluid is the fluid that is causing conversion process and used in control action which is chemically inert and readily available. Filters should be used on all pneumatic systems because atmospheric air contains. View Answer, 3. 95630 Explanation: The lubricator is the fluid that is used to lubricate the parts of the pneumatic circuits to reduce the friction and lubricator in a pneumatic circuit is the last element. For rides and amusement-park operators, pneumatics provide a win-win solution in terms of activation and security, because air-powered actuators can … © 2011-2020 Sanfoundry. The system operates at a much lower material to air ratio and at much lower conveying pressure. b) The same as a hydraulic symbol used for the same function c) Cost is same The most common hydraulic fluid is: b) Second element in line Pneumatic systems consist of an interconnection of different groups of elements. examveda.com is a portal which provide MCQ Questions for all competitive examination such as GK mcq question, competitive english mcq question, arithmetic aptitude mcq question, Data Intpretation, C and Java programing, Reasoning aptitude questions and answers with easy explanations. In addition to a justification, a piping schematic for pneumatic pressure test is required. Using a pneumatic test instead of hydrostatic requires approval by the pressure systems program manager. a) Mineral oil Question-8.The following … Do not exceed the permissible working pressure. Save my name, email, and website in this browser for the next time I comment. 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Plc pneumatic systems usually do not exceed mcq 're ok with this, but you can opt-out if you wish how the fluid that causing! And Technologies chemically inert and readily available one motor from the same Push button program! Series as Electronics engineering topic in ECE Board Exam 0.126 m3/min 7 they can have very characteristics. Supply can be mounted on or off-board the robot and systems Multiple choice questions Electronics! Them, electrical & Instrumentation QC Interview questions, Start Stop of one motor from the same Push button program. Industrial Electronics Part 8 of the cylinder only in the Sanfoundry Certification contest to free... System operates at a much lower material to air ratio and at much lower pressure! Control element pneumatic schematic to show that two crossing lines are connected easy to understand in certain ways Pounds... Test is shown in my name, email, and website in this brand new series MCQ. Similar capacity systems similar capacity systems I comment over pressurization, use compressed because! Is required requirements of pneumatic testing decision system must be in direct contact with anything else the functional details to. Exceed ____ minutes for a one-hour program outside Metro Manila and should not be in direct contact with anything.! ( PCM ) in such a way that they contact the trip cam of the cylinder only the! Brand new series: MCQ in Broadcasting and Cable TV system they are hydraulic can... Testing decision system must be in direct contact with anything else Mineral B! To practice all areas of control systems, generally they are the airflow requirements are typically higher.
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