Reciprocating air compressor is best … In a wide range of equipment, air compressors are the primary need for all of them. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) The rotary compressor is adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel engines. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Dampens pulsations from the discharge line of a reciprocating compressor, resulting in an essentially steady flow of air in the system. Reciprocating Compressors. 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. Compressors, Gas Dynamics and Gas Turbines Online Test - Multiple Choice Questions and Answers,online quiz,online bits,interview questions pdf free download While many business owners sometimes find it difficult to decide which type of air compressor would work best for them? 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%. It reduces the cost of compressor. The units are compact, relatively inexpensive, and require a minimum of operating attention and maintenance. 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. PDF. Following mechanical engineering mcq or objective questions is help you in ssc je 2020, ESE 2020, Gate 2020, IES 2020, psu 2020 examinations. In Figure 1, P S Enter the code above here : In a rotary screw compressor, oil should be changed about every 7000-8000 hours. If the flow of air through the compressor is perpendicular to its axis,then it is a....... 43. The P-V diagram is a plot of the pressure of the gas versus the volume of the gas trapped in the compression chamber. READ PAPER. Today we study of mcqs on axial flow compressor. Following mechanical engineering mcq or objective questions is help you in ssc je 2020, ESE 2020, Gate 2020, IES 2020, psu 2020 examinations. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Pneumatic Systems – Concepts and Components - Mechanical Engineering (MCQ) questions and answers. Lube Oil Console. 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). Compressor bearings receive lubricating oil from lube oil console. C. To enable compression in two stages . 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. 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. Like a reservoir of anything else, it’s a reserve (well, sure; hence the name) and a buffer. Explanation: The cylinder head is an aluminum casting which contains the required air and water Gas turbines use following type of air compressor. 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 . • 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- Mcq on reciprocating pump (objective questions) On some compressors a separate force-fed lubricator is installed to supply oil to the compressor cylinders. 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 PDF. 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. 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. A) centrifugal type B) reciprocating type C) lobe type D) axial flow type. 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. Hello friends my name is Roshan Namdeo Waje and founder of mechstudy.here I shere the imforfation about mechanical engineering. Compressor required reservoir for compressed air - Hydraulics & Pneumatics Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Hydraulics & Pneumatics Q. 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. Download PDF Package. 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. 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. The intercooling in multistage compressors is done..... A. Is adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel Engines capacity increases with suction... Change the oil approximately every 3 months C ) lobe type D ) axial flow compressor engine required to the! 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