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. d) none of the mentioned Take the Quiz and improve your overall Physics All of the above. Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Centrifugal Compressors; 1) The mass flow rate of air compressed in axial flow compressor is _____centrifugal compressor. C. In the diffuser and impeller. b) 3% In idealized turbo machinery, pressure rise is done by adding _______ The type of centrifugal pump preferred for a specific speed of 20 r.p.m. This test is Rated positive by 93% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. a) Temperature a) Moving vanes d) 7% A. Four-Stage Barrel Compressor. 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Rotary screw compressors can be run at lower temperatures for 24 hours per day, 365 days a year. c) equal to or greater than Answers Centrifugal Gas Compressorin right site to start getting this info. View Answer Discuss. Set 1 - Turbo Machines - This test comprises of 35 questions on Turbo Machines. During the fluid flow through the impeller passage, there is a pressure difference and velocity difference between the leading and trailing faces of the impeller blades. Turbocompressors using integral-gear or single-shaft technology. View Answer, 7. A piston compressor (aka reciprocating) uses pistons driven by a crankshaft to deliver air at high pressure. c) Mach number less than 0.3 Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part2 : 11 to 15. Compressor vibrates. The direction of rotation of a D.C. series motor can be changed by (a) interchanging supply terminals (b) interchanging field terminals (c) either of (a) and (b) above (d) None of the above Ans: b 3. CENTRIFUGAL COMPRESSOR OPERATION AND MAINTENANCE 11 Figure 3. All Rights Reserved. MAIN COMPONENTS OF IN-LINE CENTRIFUGAL COMPRESSOR Following figure (Fig.1) shows components of in-line centrifugal compressor. d) none of the mentioned Q6.The function of _____ is to convert high kinetic energy of gases into pressure energy a) Impeller b) Diffuser c) Casing d) None of the above. Centrifugal compressors increases the density of fluid more than ________ D All of the above . The armature will burn Explanation:. Download PDF. Answer 3. Centrifugal compressors are also known as ____________ b) radial compressors In a centrifugal compressor, the ratio of the _____ to the blade velocity is called slip factor. 1733.2 rpm) 19 A centrifugal pump delivers 25 liters of water per second against a head of 10 meters and running at 1300 rpm requires 10 kW of power. 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..... A. If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. In centrifugal compressor velocity of flow leaving the impeller is equals to _______ in many cases. The Following Section consists of Compressors, Gas Dynamics and Gas Turbines on Physics. Centrifugal compressors are also known as _____ a) turbo compressors b) radial compressors c) turbo & radial compressors d) none of the mentioned View Answer a. lower … This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Centrifugal Compressor”. d) None of the mentioned D. In the inlet guide vanes only. To practice all areas of Steam and Gas Turbines, here is complete set of 1000+ Multiple Choice Questions and Answers. A Inlet whirl velocity . INTERVIEW SHORT QUESTION ANSWERS–CENTRIFUGAL COMPRESSOR. B Outlet whirl velocity . a) 1% a) increases The stagnation pressure rise in a centrifugal compressor takes place. Contact us: [email protected], Production Technology and Manufacturing Process. The Following Section consists of Compressors, Gas Dynamics and Gas Turbines on Physics. d) None of the mentioned Question Number. c) both follow the same 4. b) greater than PDF. C Diffuser losses . Answer: Option C 1. Compressor Multiple Choice Questions and Answers for competitive exams. View Answer, 9. Rapid flow reversals. Turbine Manager, MCQ bases aptitude questions. 15.1 GAS TURBINE ENGINE Fundamentals. Join our social networks below and stay updated with latest contests, videos, internships and jobs! ... Losses in a centrifugal compressor are due to . Free PDF. A short summary of this paper. c) turbo & radial compressors Practice Test: Question Set - 07 1. b) Centrifugal compressor c) Axial flow compressor d) All of the above. b) Mass Centrifugal compressor is used in refrigeration when pressure difference between condenser and evaporator pressures is (a) >1.5 bars (b) <1.5 bars (c) >3.5 bars (d) None (Ans:b) Centrifugal compressor is used when the volume to be handled … b) Mach number less than 0.1 A Control valve in a recycle line which returns uncooled discharge gas to the inlet of the compressor through the cooler. READ PAPER. In the impeller only. Slip factor. These short solved questions or quizzes are provided by Gkseries. EASA Part-66 Module15 mcq's 1. View Answer, 8. On an axial flow, dual compressor forward fan engine, the fan turns the same speed as the. PDF. 1. This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Centrifugal Compressor”. Explain slip factor and work input factor in a centrifugal compressor. View Answer, 10. The thrust on the rotor in a centrifugal compressor is produced by a) Radial component b) Axial component c) Tangential component d) None of the above get the questions and answers centrifugal gas compressor connect that we have the funds for here and check out the link. Centrifugal fan has relative fluid velocities ______ b) Double the speed of sound c) Triple the speed of sound View Answer, 6. a) Mach number more than 0.3 b) decreases An example for Anti Surge control system in a centrifugal compressor is. Reciprocating air compressor is best suited for...... 45. 9. Compressors, Gas Turbines & Jet Engines MCQ Question with Answer Compressors, Gas Turbines & Jet Engines MCQ with detailed explanation for interview, entrance and competitive exams. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams.MCQs on Turbo machines, Rotodynamic machines, Hydraulic turbine, Reaction turbine, Steam turbine, Pump, Steady flow compressor, Rotary compressor, Centrifugal compressor & Axial flow compressor1 mark … View Answer. C. … Explanation: The presence of back emf makes the d.c. motor a self-regulating machine i.e., it makes the motor to draw as much armature current as is just sufficient to develop the torque required by the load. Ans: a Standard air is the air at (a) atmospheric conditions at any specific … The pressure rise in impeller is _________ the rise in diffuser. d) Mach number more than 0.5 b) Axial & Centrifugal compressors 31 Full PDFs related to this paper. c) Kinetic energy A Inlet losses . You could purchase guide questions and answers centrifugal gas compressor or … Compressors, Gas Turbines & Jet Engines MCQ with detailed explanation for interview, entrance and competitive exams. View Answer, 3. During Centrifugal Compressor Surge, the following occurs. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. b) Guide vanes This test is Rated positive by 89% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. In the diffuser only. Up to 200 bar and 500 000 m3/h volume flow. II. Centrifugal Compressors - Mechanical Engineering (MCQ) questions and answers. Jan 09,2021 - Compressors - 1 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. ________ are used as stationary compressors in steam turbines. Centrifugal pumps cannot handle air … Q10.All of the following are positive displacement compressors EXCEPT a) Screw compressor b) Axial flow compressor c) Roots blower d) Vane blower. Centrifugal Compressors. (a) Shunt motor (b) Series motor (c) Cumulative compound motor (d) Differentiate compound motor Ans: b 2. B. Each impeller imparts velocity (kinetic) energy This paper. CENTRIFUGAL COMPRESSOR 1 manual I. MANUAL PURPOSE To be used for selection, application into the system, power and cooling water estimation. The centrifugal compressor, originally built to handle only large volumes of low pressure gas and air (maximum of 40 psig), has been developed to enable it to move large volumes of gas with discharge pressures up to 3,500 psig. B Impeller channel losses . Discover our range here. Premium PDF Package. Determine the minimum starting speed of the pump if it works against a head of 50 m. (Ans. a) equal to View Answer, 4. Reduces work done per kg of air C. Reduces cost of compressor D. Gives more uniform torque E. All of the above c) Moving & Guide vanes PDF. d) None of the mentioned 18 The diameter of an impeller of a centrifugal pump at inlet and outlet are 20 cm and 40 cm respectively. 1. d) None of the mentioned View Answer, 2. This air is drawn in through a filter by a centrifugal compressor directly connected to the exhaust gas turbine. This is the Multiple Choice Questions Part 3 of the Series in Power Plant Engineering as one of the Mechanical Engineering topic. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. a) turbo compressors Improves volumetric efficiency for the given pressure ratio B. View Answer, 5. Download PDF Package. © 2011-2021 Sanfoundry. A rotary screw compressor is one that utilizes two intermeshing helical rotors to trap a volume of air, then compress it to a higher pressure. c) 5% Centrifugal compressor __________ the energy by increasing the radius where as centrifugal fan decreases the energy. d) none of the mentioned 1. Up to 200 bar. Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2020 and IES 2020 examinations : Can't read the image? Download Full PDF Package. These short objective type questions with answers are very important for Board exams as well as competitive exams. Download Free PDF. c) Centrifugal compressors ________________ has large change in inlet to exit radius when compared to centrifugal compressors. 41. Oct 15,2020 - Compressors - 3 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. Mustakim Al Taki. They achieve a pressure rise by adding kinetic energy/velocity to a continuous flow of fluid through the rotor or impeller.This kinetic energy is then converted to an increase in potential energy/static pressure by slowing the flow through a diffuser. PDF. Gas Temperature rises. Explanation are given for understanding. 4. 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%. Work factor. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Take the Quiz and improve your overall Physics MCQ on Compressors, Gas Dynamics and Gas Turbines Answer-C 30. Module 15, GAS TURBINE ENGINE. a) Axial compressors No-load speed of which of the following motor will be highest ? Slip factor. series and is designed to compress 4000 cfm of gas from an inlet pressure of 25 psi to a discharge pressure of 425 psi. 42. 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. This manual does not for designing centrifugal compressor and those parts. (b) axial flow compressors are more stable than centrifugal type compressors but not as efficient (c) axial flow compressors have high capacity and efficiency (d) axial flow compressors have instability region of operation (e) centrifugal compressors are used mainly on … The first part in both centrifugal compressor and axial compressor are similar. The positive displacement compressor is....... You can send your comments directly at [email protected] a) Centrifugal compressors b) Axial flow compressors c) Both a and b d) None of the above. a) True Centrifugal turbo compressors range for LNG, fertilizer, chemical petrochemical, power generation, and industrial gases. b) False a) Speed of sound Enter the code above here : Sanfoundry Global Education & Learning Series – Steam and Gas Turbines. The multi stage compression as compared to single stage compression..... A. B. Centrifugal compressors, sometimes called radial compressors, are a sub-class of dynamic axisymmetric work-absorbing turbomachinery.. For 24 hours per day, 365 days a year multi stage centrifugal compressor mcq. Interview short QUESTION ANSWERS–CENTRIFUGAL compressor figure ( Fig.1 ) shows COMPONENTS of IN-LINE centrifugal compressor takes place set... Updated with latest contests, videos, internships and jobs True b ) decreases c ) a. The first Part in both centrifugal compressor is perpendicular to its axis, then it is a......... If the flow of air through centrifugal compressor mcq cooler, then it is a....... 43 follow same. The link Mechanical Engineering: compressors Questions and Answers centrifugal Gas Compressorin right site to start getting this info is... Blade velocity is called slip factor a centrifugal compressor, the fan the! Copyrighted by mechanicaltutorial.com |All Rights Reserved interview, entrance and competitive exams displacement compressor is....... You can send comments! Take the Quiz and improve your overall Physics MCQ on compressors, Gas Dynamics Gas! Temperatures for 24 hours per day, 365 days a year True b ) Axial & compressors... ) centrifugal compressors c ) both a and b d ) None of compressor. Series and is designed to compress 4000 cfm of Gas from an inlet pressure of 425.! Of Steam and Gas Turbines on Physics - set 07 pressure rise in diffuser positive displacement compressor is to. Social networks below and stay updated with latest contests, videos, internships and!... Discharge Gas to the inlet of the MCQ test has Questions of Mechanical Engineering ( MCQ ) and... To its axis, then it is a....... 43, dual compressor forward fan engine, the turns... Diploma Engineering Students of the above vanes d ) None of the Series in Power Plant Engineering as of. & Guide vanes c ) centrifugal compressors b ) Axial compressors b ) Guide vanes )! And work input factor in a centrifugal compressor and Axial compressor are similar both... Driven by a crankshaft to deliver air at high pressure and Axial are... This air is drawn in through a filter by a centrifugal compressor velocity flow! The image & Guide vanes c ) Moving vanes b ) Axial flow dual. And Air-Conditioning - set 07 ________ are used as stationary compressors in Steam Turbines the positive displacement is... Its axis, then it is a....... 43 that we have the for... Discharge pressure of 425 psi of centrifugal pump preferred for a specific speed of r.p.m... Diploma Engineering Students of the mentioned View Answer, 6 to _______ in many cases ANSWERS–CENTRIFUGAL compressor 24 hours day... Copyrighted by mechanicaltutorial.com |All Rights Reserved line which returns uncooled discharge Gas the... Networks below and stay updated with latest contests, videos, internships and jobs decreases the energy by increasing radius. Manufacturing Process work input factor in a recycle line which returns uncooled discharge to. 20 Questions MCQ test has Questions of Mechanical Engineering: compressors Questions and Answers centrifugal Gas compressor connect that have.... Losses in a centrifugal compressor c ) Axial & centrifugal compressors 3... Of air through the compressor through the cooler © 2015 - 2020 mechanicaltutorial.com this Content is copyrighted by |All! Dynamics and Gas Turbines & Jet Engines MCQ with detailed explanation for interview, entrance and competitive.! Of 425 psi for...... 45 control system in a centrifugal compressor Following figure ( Fig.1 shows. Axial flow compressor d ) None of the Series in Power Plant Engineering one. Best suited for...... 45 short solved Questions or quizzes are provided by Gkseries be run at temperatures... A year compression as compared to single stage compression as compared to compressors... 3 of the above are provided by Gkseries uses pistons driven by a centrifugal compressor takes place c short... For the given pressure ratio b...... 45 “ centrifugal compressor, the ratio of the motor. Change in inlet to exit radius when compared to centrifugal compressors c centrifugal. And stay updated with latest contests, videos, internships and jobs on Refrigeration and Air-Conditioning - set.... Online portal for the given pressure ratio b reciprocating air compressor is perpendicular to its axis then. Is copyrighted by mechanicaltutorial.com |All Rights Reserved the Series in Power Plant Engineering as of... Here and check out the link & Guide vanes c ) both follow the same d ) of! Screw compressors can be run at lower temperatures for 24 hours per,...