Centrifugal compressors, sometimes called radial compressors, are a sub-class of dynamic axisymmetric work-absorbing turbomachinery.. d) None of the mentioned View Answer, 9. Download PDF. 4. b) Mach number less than 0.1 c) turbo & radial compressors Can't read the image? B. b) greater than All of the above. Contact us: info@mechanicaltutorial.com, Production Technology and Manufacturing Process. 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 … Centrifugal compressor __________ the energy by increasing the radius where as centrifugal fan decreases the energy. Compressors, Gas Turbines & Jet Engines MCQ Question with Answer Compressors, Gas Turbines & Jet Engines MCQ with detailed explanation for interview, entrance and competitive exams. These short solved questions or quizzes are provided by Gkseries. PDF. Centrifugal Compressors. Join our social networks below and stay updated with latest contests, videos, internships and jobs! 42. Turbocompressors using integral-gear or single-shaft technology. Answer: Option C a) Centrifugal compressors b) Axial flow compressors c) Both a and b d) None of the above. d) Mach number more than 0.5 Centrifugal turbo compressors range for LNG, fertilizer, chemical petrochemical, power generation, and industrial gases. The Following Section consists of Compressors, Gas Dynamics and Gas Turbines on Physics. 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. b) Guide vanes Determine the minimum starting speed of the pump if it works against a head of 50 m. (Ans. a. lower … CENTRIFUGAL COMPRESSOR 1 manual I. MANUAL PURPOSE To be used for selection, application into the system, power and cooling water estimation. Centrifugal pumps cannot handle air … This manual does not for designing centrifugal compressor and those parts. Improves volumetric efficiency for the given pressure ratio B. Download Free PDF. (a) Shunt motor (b) Series motor (c) Cumulative compound motor (d) Differentiate compound motor Ans: b 2. c) both follow the same Explanation are given for understanding. b) Double the speed of sound a) Mach number more than 0.3 C Diffuser losses . Rotary screw compressors can be run at lower temperatures for 24 hours per day, 365 days a year. 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. 1. A. d) None of the mentioned The multi stage compression as compared to single stage compression..... A. Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2020 and IES 2020 examinations : PDF. 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. b) False View Answer, 5. 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. INTERVIEW SHORT QUESTION ANSWERS–CENTRIFUGAL COMPRESSOR. In the impeller only. a) 1% d) None of the mentioned Reduces work done per kg of air C. Reduces cost of compressor D. Gives more uniform torque E. All of the above A Inlet whirl velocity . ________ are used as stationary compressors in steam turbines. a) equal to View Answer, 7. 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. A Control valve in a recycle line which returns uncooled discharge gas to the inlet of the compressor through the cooler. ... Losses in a centrifugal compressor are due to . All Rights Reserved. Answers Centrifugal Gas Compressorin right site to start getting this info. c) Moving & Guide vanes Sanfoundry Global Education & Learning Series – Steam and Gas Turbines. 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 … Download PDF Package. 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. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Centrifugal fan has relative fluid velocities ______ 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 Premium PDF Package. 1. Compressor vibrates. d) none of the mentioned © 2011-2021 Sanfoundry. C. In the diffuser and impeller. Take the Quiz and improve your overall Physics Ans: a Standard air is the air at (a) atmospheric conditions at any specific … series and is designed to compress 4000 cfm of gas from an inlet pressure of 25 psi to a discharge pressure of 425 psi. 31 Full PDFs related to this paper. A Inlet losses . Gas Temperature rises. The stagnation pressure rise in a centrifugal compressor takes place. View Answer, 6. Set 1 - Turbo Machines - This test comprises of 35 questions on Turbo Machines. B. Steam Turbine – Governers, Regulators & Performance, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Steam Turbines Questions and Answers – AIEE-ASME Preferred Standard Turbine, Next - Steam Turbines Questions and Answers – Energy Transfer Relation and Losses, Digital Signal Processing Questions and Answers – Design of Hilbert Transformers, Steam Turbines Questions and Answers – Energy Transfer Relation and Losses, Mechanical Operations Questions and Answers, Mechanical Engineering Questions and Answers, Chemical Engineering Questions and Answers, Refrigeration and Air Conditioning Questions and Answers, Steam and Gas Turbines Questions and Answers, Environmental Engineering Questions and Answers – Centrifugal Pump, Steam Turbines Questions and Answers – Turbine Performance and Effect of Throttle Governing, Steam Turbines Questions and Answers – Steam Turbine Cylinders, Hydraulic Machines Questions and Answers – Centrifugal Pumps, Steam Turbines Questions and Answers – Types, Steam Turbines Questions and Answers – Surging. a) Moving vanes Each impeller imparts velocity (kinetic) energy Answer 3. Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part2 : 11 to 15. Download Full PDF Package. 4. 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. View Answer Discuss. You could purchase guide questions and answers centrifugal gas compressor or … Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. The type of centrifugal pump preferred for a specific speed of 20 r.p.m. Up to 200 bar and 500 000 m3/h volume flow. 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. If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. 9. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. View Answer, 2. 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. On an axial flow, dual compressor forward fan engine, the fan turns the same speed as the. This air is drawn in through a filter by a centrifugal compressor directly connected to the exhaust gas turbine. c) Kinetic energy 1. In a centrifugal compressor, the ratio of the _____ to the blade velocity is called slip factor. Slip factor. D. In the inlet guide vanes only. View Answer, 8. b) radial compressors get the questions and answers centrifugal gas compressor connect that we have the funds for here and check out the link. c) 5% During Centrifugal Compressor Surge, the following occurs. Free PDF. The positive displacement compressor is....... You can send your comments directly at info@mechanicaltutorial.com. Oct 15,2020 - Compressors - 3 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. View Answer, 3. B Impeller channel losses . 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. a) increases This paper. MAIN COMPONENTS OF IN-LINE CENTRIFUGAL COMPRESSOR Following figure (Fig.1) shows components of in-line centrifugal compressor. This is the Multiple Choice Questions Part 3 of the Series in Power Plant Engineering as one of the Mechanical Engineering topic. PDF. PDF. The armature will burn Explanation:. (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 … These short objective type questions with answers are very important for Board exams as well as competitive exams. The first part in both centrifugal compressor and axial compressor are similar. Centrifugal compressors are also known as _____ a) turbo compressors b) radial compressors c) turbo & radial compressors d) none of the mentioned View Answer Module 15, GAS TURBINE ENGINE. Mustakim Al Taki. Take the Quiz and improve your overall Physics MCQ on Compressors, Gas Dynamics and Gas Turbines Answer-C 30. b) decreases An example for Anti Surge control system in a centrifugal compressor is. 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. 41. ________________ has large change in inlet to exit radius when compared to centrifugal compressors. Enter the code above here : View Answer. 1. View Answer, 4. c) Centrifugal compressors 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. A piston compressor (aka reciprocating) uses pistons driven by a crankshaft to deliver air at high pressure. c) equal to or greater than C. … In idealized turbo machinery, pressure rise is done by adding _______ B Outlet whirl velocity . Four-Stage Barrel Compressor. b) 3% Discover our range here. In centrifugal compressor velocity of flow leaving the impeller is equals to _______ in many cases. Slip factor. c) Mach number less than 0.3 b) Mass a) True d) none of the mentioned To practice all areas of Steam and Gas Turbines, here is complete set of 1000+ Multiple Choice Questions and Answers. CENTRIFUGAL COMPRESSOR OPERATION AND MAINTENANCE 11 Figure 3. A short summary of this paper. Compressor Multiple Choice Questions and Answers for competitive exams. Jan 09,2021 - Compressors - 1 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. 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. a) Speed of sound No-load speed of which of the following motor will be highest ? d) 7% Centrifugal Compressors - Mechanical Engineering (MCQ) questions and answers. b) Axial & Centrifugal compressors 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) Axial compressors READ PAPER. In the diffuser only. The Following Section consists of Compressors, Gas Dynamics and Gas Turbines on Physics. Practice Test: Question Set - 07 1. 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. The pressure rise in impeller is _________ the rise in diffuser. EASA Part-66 Module15 mcq's 1. View Answer, 10. Reciprocating air compressor is best suited for...... 45. 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. Up to 200 bar. Turbine Manager, MCQ bases aptitude questions. Q10.All of the following are positive displacement compressors EXCEPT a) Screw compressor b) Axial flow compressor c) Roots blower d) Vane blower. Rapid flow reversals. d) none of the mentioned a) turbo compressors Compressors, Gas Turbines & Jet Engines MCQ with detailed explanation for interview, entrance and competitive exams. II. a) Temperature Centrifugal compressors are also known as ____________ 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. This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Centrifugal Compressor”. Question Number. b) Centrifugal compressor c) Axial flow compressor d) All of the above. c) Triple the speed of sound 15.1 GAS TURBINE ENGINE Fundamentals. D All of the above . Centrifugal compressors increases the density of fluid more than ________