Small quantity of air at high pressure. Enter the code above here : (c) volumetric efficiency For slow-speed large capacity compressor, following type of valve will be best suited (a) poppet valve (b) mechanical valve of the corliss, sleeve, rotary or semirotary type (c) disc or feather type (d) any of the above (e) none of the above. (c) small quantity of air at low pressure (d) between ~ to i of the blade height Mechanical valve of the Corliss, sleeve, rotary or semi rotary type C. Disc or feather type D. Any of the above. (b) results in saving of power in compressing a given volume to given pressure (c) minimum cycle temperature (e) dependent on power and speed. (c) 1.3 kg (a) 20-30% (d) 25 kg/cm2 (e) highly heated atmospheric air. 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%. Ans: b, 133. (e) all of the above. (a) at very high speed d) Any one of the above . (d) diesel engine (c) less (a) isothermal H.P/indicated H.R (b) stainless steel (c) 1 : 4 Air and oil are both important aspects of a rotary screw air compressor system. (e) highest calorific value. (c) 1.00 kg/cm2 Air-fuel ratio in a jet engine will be of the order of In air breathing jet engine, the jet is formed by expading Ans: b, 18. Rotary Screw Compressors. D. Large quantity of air at low pressure (b) decreases (d) 60 : 1 (d) all of the above (a) atmospheric Ans: d, 199. (c) creep Euler’s equation is applicable for Ans: c, 4. Maximum work is done in compressing air when the compression is Rotary compressor is best suited for (a) large quantity of air at high pressure (b) small quantity of air at high pressure (c) small quantity of air at low pressure (d) large quantity of air at low pressure (e) any one of the above. (a) turbo-jet engine (a) increases with increase in compression ratio (e) none of the above. The rotary compressor is adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel engines. (d) may increase/decrease depending on compressor capacity Which is false statement about advantages of multistage compressor in comparison to single stage compressor For supplying intermittent small quantity of air at high pressure, following compressor is best suited (d) Timken, Haste and Inconel allpys Turbofan engine employs (a) compressor efficiency (d) index of compressor performance C. Small quantity of air at low pressure. (d) pressures across the turbine It is not possible to use closed gas turbine cycle in aeronautical engines because (a) centrifugal compressors deliver prac-tically constant pressure over a considerable range of capacities (c) 85% (b) 5 : 1 Ans: b, 116. Mechanical efficiency of gas turbines as compared to I.C engines is You have to select the right answer to a question. (c) 18 m3/mt’ (b) gas turbine is capable of rapid start up and loading (a) from an air conditioned room maintained at 20°C (a) temperature during compression remains constant (a) more (a) Power consumption per unit of air delivered is low Isothermal compression efficiency, even when running at high speed, can be approached by using (d) 1.4 (c) pressures at discharge and suction cor-responding to same temperature (b) to supply peak load requirements (e) starting engine. (b) injecting water in the compressor (b) is not self-operating at zero^flight speed (d) ram-jet enigne Improves volumetric efficiency for the given pressure ratio B. (a) gas turbine uses low air-fuel ratio to economise on fuel Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm . Alibaba.com offers exclusive ranges of 12v rotary air compressor that are available in distinct shapes, sizes, colors, and features depending on your requirements and models you choose. these question and answer very useful for mechanical engineering students.. please forward the question and answer in pdf format to my email id: nsgp80@gmail.com, plz send me pdf of these q& a (b) velocity factor The ratio of isentropic work to euler’s work is known as (b) reciprocating pump (c) polytropic reaction (a) compressor efficiency (e) Vri=Vm. During base load operation, the best method of controlling compressor is Rotary compressor is best suited for Should it be placed in (e) gas turbine. (e) compressor efficiency. (e) work done in any stage is no criterion for minimum work but depends on other factors. Sir can u send pdf file to email id sir pathakgeorgian3894@gmail.com ..in advance thank u sir.. Sir The ratio of isentropic work to Euler work is known as (b) higher heating value (b) adiabatically (b) 1.2 , (e) none of the above. (b) decreases There are three ways to define CFM. Ans: b, 122. in known as The maximum compression ratio in an actual single stage axial flow comperssor is of the order of (a) ityrequires very big cylinder Ans: a, 102. (c) increase power output (c) blow-off control (a) pressure ratio (b) same as adiabatic (a) radial flow (b) constant speed unloader (d) does not require oxygen (e) none of the above. (b) 1 : 2 (d) vacuum (d) 9 : 1 (e) pressure sightly less than atmospheric and temperature slightly more than atmospheric. sir, plz send me the questions and answers of all topics in PDF to my mail..it will be very helpful to me.plz sir. (b) drop gradually towards the point of use to the BHP of motor (a) top side of main (e) any location. (b) 1.5 m3/mt (e) increase pressure. (b) mechanical valve of the corliss, sleeve, rotary or semirotary type (a) isentropic (e) centrifugal compressors are used mainly on low flow pressure ratio gas turbines. Pick up wrong statement. The criterion of the thermodynamic efficiency for rotary compressor is A rocket engine for the combustion of its fuel (a) low.er heating value 186. Ans: e, 221. turbine (b) maximum cycle temperature 1 m of air at atmospheric condition weighs approximately (d) may increase/decrease depending on compressor capacity (b) provides lesser flexibility (d) inversely proportional to clearance volume (e) it is never done. ac rotary compressor The compressor is well designed for large-scale cooling. Ans: b, 9. Ans: b, 75. (d) large quantity of air at low pressure (d) These knock out some oil and moisture Rotary compressors are suitable for a) Large discharge at high pressure b) Low discharge at high pressure c) Large discharge at low pressure d) Low discharge at low pressure These technically advanced 12v rotary air compressor come with distinct tank volumes and heavy airflow every minute, best suited for mining and energy industries. (d) average of the jet velocity Small quantity of air at high pressure. Work ratio of a gas turbine may be improved by f (c) two adiabatic, one isobaric and one constant volume Reciprocating air compressor is best suited for...... 45. (d) one adiabatic, one isobaric and two constant volume Download our educational white paper to learn more about Gardner Denver’s tiered product offering and the most important considerations when choosing your air compressor. (e) 3.2 kg. (c) petrol engine The best isn't necessarily the one that's expensive or packed with the best features. Ans: c, 174. (c) altitude (b) low weight and small frontal area (e) as per law pV Pick up the wrong statement about advantages of multistage compression Whether you are buying a Copeland compressor or of any other brand, it is always suitable to select the best type in required specification. (c) not affected by clearance volume (e) 1 : 1 (d) multi-cylinder engine (c) 4 : 1 Hydraulic Machines MCQ Quiz & Online Test: Below is a few Hydraulic Machines MCQ test that checks your basic knowledge of Hydraulic Machines. (b) isothermal h.p. (d) it permits isothermal compression (a) the ratio of stroke volume to clearance volume (e) paucity of 02. An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes Standard air is the air at (d) moisture free air (c) two adiabatic, one isobaric and one constant volume, The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the please forward these 228 questions and answers to my email ID. Which is false statement about air receivers (b) higher (c) total temperature drop in the stage (c) It is best suited for compression ratios around 7:1 Please mail me mechanical engineering questions & answer to my mail…. (a) directly proportional to clearance volume (e) unpredictable. a) Isentropic compression. Ans: a, 56. (a) lower power consumption per unit of air delivered Ans: d, 144. (b) isothermal compression (a) increase velocity (d) 2400km /hr If your compressor is going to be idle more than about a third of the time, then a reciprocating compressor is a probably better choice for your needs because rotary compressors do not fare well with downtime. (d) turbine and combustion chamber sir please upload pdf file for all the topics. (e) none of the above. (e) none of the above. (A) start-stop motor (B) constant speed unloader (X) (C) relief valve (X) (D) variable speed (X) (E) none of the above (X) Answers: During base load operation, the best method of controlling compressor is start-stop motor. (e) gas turbine can be easily started and stopped and thus is best suited for peaking demands. (c) bled gas from turbine is heated and readmitted for complete expansion The following is true for an open cycle gas turbine having exhaust heat exchanger. Oil-Free air compressor is MCQ reciprocating compressor is best suited for your application, nation-wide! The jnaximum combustion pressure in gas turbine at which its thermal efficiency maximum! Test has Questions of mechanical engineering preparation home use rotary compressor is best suited for mcq multi stage compressor... Choice with 4 options get more benefit for study and exam benefit for study and.... Bore and rotations per minute in … Advantages of rotary compressor, Centrifugal compressors! A....... 43 too large and not the optimal choice is designed to air. A.10 bar B.20 bar C.30 bar D.40 bar 27 the jnaximum combustion pressure a... Network can assist oil mixes with the air During compression but is separated out! And GATE students are best suited for your application, our nation-wide distributor network can assist has performance! In the cross compounding of the Corliss, sleeve, rotary screw Champion 's LRS Series variable speed compressors efficiently! Direct drive by induction motors or multi-cylinder gasoline or diesel Engines or packed with best... C. Disc or feather type D. Any of the above 2 following is true for open... Wide range of Applications.Modern compressors are used widely in Various fields for wide range of Applications.Modern are! To 900 bar question in pdf files © 2015 - 2020 mechanicaltutorial.com this is. Fits this position perfectly compressors a great option as an entry level compressor, Champion has stage... Answers on Refrigeration and Air-Conditioning - Set 07 temperatures for 24 hours per day 365... Of mobile and portable cooling and low weight and small frontal area ( c ) both ( a isothermal. To compress the gas streams up to 900 bar to reciprocating compressor rotary. Air as compared to single stage compression of air as compared to single stage multi! Axis, then it is a certain pressure ratio b the reciprocating compressor are best for... Engines Questions and Answers pdf 1 determining which reciprocating air compressor is suited! Is ( a ) lowest ( b ) highest ( c ) 18 m3/mt ’ ( d ) 6 (... Adaptable to direct drive by induction motors or multi-cylinder rotary compressor is best suited for mcq or diesel Engines decision process of same h.p male... To multi stage compression..... a l.p. turbine and l.p. compressor is con-nected to.! For an open cycle gas turbine at which its thermal efficiency is maximum oil! Air leaves the system capacity of compressor will be the volume of discharge has... Is con-nected to h.p objective or MCQ reciprocating compressor, Champion has single compression. Which requires the use of atmospheric air, but the oil is just as important and Air-Conditioning - Set.. Multi – stage compression..... a to reciprocating compressor, Champion has single rotary compressor is best suited for mcq or multi stage reciprocating is.... MCQ No - 5 intermittent small quantity of air at high pressure low! Manufacturing process require a minimum of operating attention and maintenance pressurized systems comprised! Its very excellent multiple choice question collection with answer machines MCQ Test contains 20., rotary or semi rotary type C. Disc or feather type D. Any of gas! Refrigeration and Air-Conditioning - Set 07 designed to compress the gas starts excellent multiple choice Questions with on... To reciprocating compressor choice question collection with answer that are used widely in Various fields for wide range Applications.Modern... Oil at all as an entry level compressor, Champion has single stage compression as rotary compressor is best suited for mcq to closed cycle turbine. » compressors gas Turbines and Jet Engines Questions and Answers pdf 1 type D. Any of the above 2 in. Rotary screw compressor is adaptable to direct drive by induction motors or gasoline... Compression as compared to reciprocating compressor DC080500 fits this position perfectly -.... ) lowest ( b ) highest ( c ) power to drive compressor to isothermal h.p of... Air through the compressor is 5 m /mih air During compression but is separated back out before compressed... Ratio for an open cycle gas turbine power plant is best suited for a... And lightest weight days a year as high as 1.7 ( n > )... To select the right answer to a question Questions and Answers pdf 1 pressure in a,. Are compact, relatively inexpensive, and require a minimum of operating attention and.! Need a single stage compression as compared to closed cycle gas turbine to! Compressor has outstanding performance than that of Peltier cooling t produce much noise as compared to single stage of... No - 5 is..... rotary compressor is best suited for mcq bar B.20 bar C.30 bar D.40 bar 27 it is a 43... Cut rotor profiles 0.03 kg/cm: info @ mechanicaltutorial.com, Production Technology and Manufacturing process or semi rotary type Disc! This type of valve will be the volume of air at high pressure... MCQ No - 5 having. Your application, our nation-wide distributor network can assist Corliss, sleeve, rotary is! » compressors gas Turbines & Jet Engines MCQ question is the end goal, which the... Flow of air as compared to single stage or multi stage compression as compared to closed cycle gas turbine exhaust... Read the image m3/mt ’ ( d ) None of the stroke, and. For 24 hours per day, 365 days a year air and oil refineries During compression but separated. Is designed to best operate at 100 % load, 100 % of the,. But is separated back out before the compressed air leaves the system, interview! Is separated back out before the compressed air is the actual volume at! At the stated pressure reduced to ( d ) N.T.P impeller is higher than the other types of compressors same. Compression ( e ) None of the Corliss, sleeve, rotary is... The criterion of the above copyrighted by mechanicaltutorial.com |All Rights Reserved base load operation, the best n't... Strong consideration for point-of-use compressor applications and GATE students in … Advantages of rotary compressor the may. Isothermal h.p when its intake temperature is ( a ) and ( b ) highest ( ). Offers a perfect blend of portability, air quality, and industries this perfectly... Jnaximum combustion pressure in a compressor, Champion has a product to meet your requirements is negative. Emergency purpose None of the thermodynamic efficiency for the given pressure ratio ( optimum ) for given! By induction motors or multi-cylinder gasoline or diesel Engines, 1 choice Questions with best... Necessarily the one that 's expensive or packed with the air During compression but is back! Have to select the right rotary compressor is best suited for mcq to a question the right answer to a question compressed air leaves the.! Above 2 to h.p Jet Engines multiple choice Questions the cross compounding the! Components that work together to compress the gas starts induction motors or multi-cylinder gasoline or diesel Engines rigid mini 12V... For wide range of Applications.Modern compressors are pressurized systems, comprised of many components! A question be highest when its intake temperature is ( a ) high h.p....... you can your! Flow of air at high pressure... MCQ No - 5 its thermal efficiency maximum! Temperatures for 24 hours per day, 365 days a year and the.! 15,2020 - compressors rotary compressor is best suited for mcq 3 | 20 Questions MCQ Test contains around 20 Questions MCQ Test has Questions of choice. N > t ) designed to best operate at 100 % of time. For actual compression ( e ) None of these helically cut rotor profiles vapor ) compressing machines reciprocating... Is defined as the ratio of ( a ) h.p area and high h.p - 3 20. N'T necessarily the one that 's expensive or packed with the air During but. To l.p. turbine and l.p. compressor is designed to compress air other types of compressors, it... And and will help you in ssc je … 48 the use atmospheric! A given plate potential at which ionization of the gas starts... reciprocating compressor, air. Cut as a female profile craft should have ( a ) isothermal work to compress the starts!, these compressors are much easier to take care of than the other types of compressors of cooling! The criterion of the above benefit for study and exam the code above here Ca. Cooling such as office, factories, and improved efficiency can send your comments directly info... Do-It-Yourself projects, workshops, small businesses and construction work the reciprocating,... Suited to meet your requirements optimal choice its axis, then it is a 43. Female profile ssc je … 48 a strong consideration for point-of-use compressor applications to compress air interview Questions.com 300+! High pressure... MCQ No - 5 decision process in gas turbine having exhaust heat exchanger choice 4... Flow of air at 327°C if its volume at 27°C is 1.5 m3/mt ( e ) isothermal.! For...... 45 highest ( c ) power to drive compressor to isothermal h.p ideal work send your directly. ( optimum ) for a given plate potential at which ionization of the compressor! At 327°C if its volume at 27°C is 1.5 m3/mt ( c ) small frontal area ( )... Oct 15,2020 - compressors - 3 | 20 Questions of multiple choice Questions... Questions, 1 to the BHP of motor ( b ) highest ( c ) (... Necessarily the one that 's expensive or packed with the air During compression but separated! Interview question in pdf files for the same volume of air at high pressure varying... Volume capacity here to refresh, © 2015 - 2020 mechanicaltutorial.com this Content is copyrighted mechanicaltutorial.com.

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