The equipment for these compressors is described as below:-1. If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. In this mechanical engineering coures we study of machine design objective. Small quantity of air at high pressure C. Small quantity of air at low … To help operators of reciprocating compressors gain greater The positive displacement compressor is....... You can send your comments directly at info@mechanicaltutorial.com. In a wide range of equipment, air compressors are the primary need for all of them. Can't read the image? Following mechanical engineering mcq or  objective questions is help you in ssc je 2020, ESE 2020, Gate 2020, IES 2020, psu 2020 examinations. Compressors, Gas Dynamics and Gas Turbines Online Test - Multiple Choice Questions and Answers,online quiz,online bits,interview questions pdf free download The air, after compression in the L.P. PDF. C. To enable compression in two stages . Dampens pulsations from the discharge line of a reciprocating compressor, resulting in an essentially steady flow of air in the system. 31 Full PDFs related to this paper. Free PDF. In a reciprocating air compressor the air temp at the end of compression is too high. Compressors, Gas Turbines and Jet Engines MCQ Practice Test - Set 01 For a more accurate time frame, call in with a model number to find the recommended schedule for your compressor. In this mechanical engineering coures we study of machine design or objective. They occupy a fraction of the space and weight of a reciprocating machine of equivalent capacity. Prevents the excessive cycling of a compressor. Download Full PDF Package. MECHANICAL ENGINEERING- COMPRESSORS, GAS TURBINES AND JET ENGINES Free air is the air at (a) atmospheric conditions at any specific location (b) 20°C and 1 kg/cm2 and relative humidity of 36% (c) 0°C and standard atmospheric conditions (d) 15°C and 1 kg/cm2 (e) 25°C, 1 kg/cm2 and relative humidity of 50%. Explanation: ... it requires cooling water for its operation. In multistage compressor, the isothermal compression is achieved by (a) employing intercooler (b) by constantly cooling the cylinder (c) by running compressor at very slow speed (d) by insulating the cylinder (e) none of the above. 6. can be used with or without any air reservoir or storage tank; because of the uniform nature of the gas output. a. rotary compressor to avoid pulsating effect b. reciprocating compressor to avoid pulsating effect c. both rotary and reciprocating compressors to avoid pulsating effect d. none of the above View Answer / Hide Answer A) centrifugal type B) reciprocating type C) lobe type D) axial flow type. compressor is a two cylinder reciprocating compressor with a rated displacement of 27 cubic feet per minute at 1250 RPM. Require an air reservoir or storage tank to compensate for the pulsating nature of compressed air. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) A self-contained lubricating system for bearings, gears, and cylinder walls, including a reservoir or sump for the lubricating oil, and a pump, or other means of delivering oil to the various parts. 42. Pneumatic Systems – Concepts and Components - Mechanical Engineering (MCQ) questions and answers. Centrifugal and reciprocating compressors and their drives require a variety of auxiliary equipment to support their operation. Reciprocating compressors require air reservoir tanks to reduce air pulses created in the compression process as well as using that reservoir to handle larger demands of air. The most common type of air compressor is the screw air compressor … Latest Compressors, Gas Turbines and Jet Engines Questions and Answers Pdf 1. Turbine Manager, MCQ bases aptitude questions. Mcq on reciprocating pump (objective questions) Reciprocating air compressor is best suited for...... 45. 3. For example, a 5,000-hp reciprocating compressor using a simple bypass to reduce compressor capacity from 100% to 90% will need to recycle gas that is already compressed, effec-tively wasting more than $326,000/yr in energy costs, assuming a local utility rate of $0.10/kWh. Following mechanical engineering mcq or objective questions is help you in ssc je 2020, ESE 2020, Gate 2020, IES 2020, psu 2020 examinations. Reciprocating air compressor is best … Serves as an air reservoir to take care of sudden or unusually heavy demands for air that’s in excess of the compressor’s designed capacity. This paper. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. 41. Ans: c. 47. 46. www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. Free air is the air at (a) atmospheric conditions at any specific location (b) 20°C and 1 kg/cm2 and relative humidity of 36% (c) 0°C and standard atmospheric conditions (d) 15°C and 1 kg/cm2 (e) 25°C, 1 kg/cm2 and relative humidity of 50%. Compressor required reservoir for compressed air - Hydraulics & Pneumatics Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Hydraulics & Pneumatics Q. The compressor consists of a water cooled cylinder head and valve body assembly and an air cooled integral crankcase and cylinder block. of the motor or engine required to drive the compressor Two stage Reciprocating Air Compressor with Intercooler: First of all, the fresh air is sucked from the atmosphere in the low pressure (L.P.) cylinder during its suction stroke at intake pressure P 1 and temperature T 1. READ PAPER. The intercooling in multistage compressors is done..... A. To cool the air at delivery . Chemical Engineering Site already published articles on Reciprocating Compressor Trips and Safety Aspects and Centrifugal Compressor Surge – Choke which was well received by the users. A reciprocating compressor is a positive displacement machine in that a volume of gas is drawn into a compressor cylinder’s compression chamber where it is trapped, compressed and pushed out. Answer is: axial flow type. This depends on the type of compressor you purchase. Premium PDF Package. Enter the code above here : D. To minimise the work of compression Compressor bearings receive lubricating oil from lube oil console. • Rotary screw compressors do not require an air reservoir, but; • for certain applications, a reservoir is a good addition to a rotary screw compressor applica- On some compressors a separate force-fed lubricator is installed to supply oil to the compressor cylinders. Specification : Compressor B. The overall isothermal efficiency of the compressor is defined as the ratio of (A) Work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio (B) Isothermal power to the shaft power or B.P. PDF. • Reciprocating air compressors require the use of an air tank • The larger the air tank, the less work the reciprocating compressor has to do. Reciprocating compressors can only be fully optimized for maximum throughput if either the cylinder capacity utilization or the power utilization, or both, is 100%. 7. We work closely with Howden Thomassen Compressors B.V. in serving the low-speed traditionally the API 618 reciprocating compressor market. Hello friends my name is Roshan Namdeo Waje and founder of mechstudy.here I shere the imforfation about mechanical engineering. In an axial flow compressor,the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as......... 44. The P-V diagram is a plot of the pressure of the gas versus the volume of the gas trapped in the compression chamber. Reciprocating Compressors. To cool the air during compression. The cylinder head is an aluminum casting which contains the required air and water Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. It reduces the cost of compressor. Although compressor capacity increases with increasing suction pressure, gas well deliverability benefits from lower suction pressures. Pick up the wrong statement. please do not enter any spam link in the comment box Large quantity of air at high pressure B. Lube Oil Console. 113) Gas turbines use following type of air compressor. PDF. Today we study of. Take the Quiz and improve your overall Physics In Figure 1, P S Today we study of  mcq on rolling  contact bearing (objecti... Mcq on reciprocating pump objective questions on hydraulic machine, Mcq on reciprocating pump (objective questions). 44. Download PDF. Apparatus Required : The test unit consisting of an air reservoir on air intake tank with an orifice and a U tube manometer , the compressor having pressure gauge , energy meter and stop watch . The displacement of a screw compressor is a function of rotor diameter, length and profile and the compressor speed, which is a direct result of the driver speed and any gear ratios. For a Reciprocating air compressor, generally you would change the oil approximately every 3 months. The Following Section consists of Compressors, Gas Dynamics and Gas Turbines on Physics. In a rotary screw compressor, oil should be changed about every 7000-8000 hours. Generally, rotary screw air compressors deliver more air compared to reciprocating compressors of the same size. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. A short summary of this paper. Explanation: Ans: b 2. In this mechanical engineering coures we study of machine design or objective. ConversionConversion Ans: a Standard air is the air at (a) atmospheric conditions at any specific … Rotary Compressors. Today we study of mcqs on axial flow compressor. Rotary Screw Compression Enerflex offers 20 hp to 3,000 hp field-proven custom and standard rotary screw compressor packages built to any technical specification, for moving large volumes at lower suction and discharge pressures. Download PDF Package. Reciprocating Compressors consist of a piston acting within a cylinder to physically compress the gas contained within that cylinder. The rotary compressor is adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel engines. While many business owners sometimes find it difficult to decide which type of air compressor would work best for them? Gas turbines use following type of air compressor. EmoticonEmoticon, In this mechanical engineering coures we study of power plant mcq or objective. Rotary screw compressors do not create the same type of air pulses and can deliver large amounts of air when required without the need of a reservoir tank. Like a reservoir of anything else, it’s a reserve (well, sure; hence the name) and a buffer. Contact us: info@mechanicaltutorial.com, Production Technology and Manufacturing Process. Reciprocating air compressor is best suited for..... A. 2. Which type of compressor requires a reservoir for compressed air and why? To conduct performance test on a two stage reciprocating compressor and to determine the volumetric efficiency. Which type of compressor requires a reservoir for compressed air and why? You can fill it up gradually but steadily, then draw it down as needed. Download Free PDF. This Compressor quiz also unveils you about the Selection, Types, Design and Performance Calculations, Components and Safety aspects of compressors. A refrigerant should have (a) Tow specific heat of liquid (b) high boiling point (c) high latent heat of vaporisation (d) higher critical temperature (e) low specific volume of vapour. PDF. Mustakim Al Taki. 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Questions and answers Engineering coures we study of machine design or objective of mechstudy.here I shere imforfation... An online portal for the preparation of the gas contained within that cylinder lower suction pressures a ) type. Roshan Namdeo Waje and founder of mechstudy.here I shere the imforfation about mechanical Engineering coures we study of design! University Exam common type of air in the compression chamber of Degree and Diploma Engineering Students of the gas in. Performance Calculations, Components and Safety aspects of compressors the space and weight of a reciprocating air would!, after compression in the system as needed type D ) axial flow.. Reciprocating air compressor is....... you can send your comments directly at info @ mechanicaltutorial.com, Production Technology and Process. The motor or engine required to drive the compressor cylinders support their.!