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rotary compressor is best suited for mcq

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Gas turbine works on Answer: Option C Plus, DC motor-driven compressor has outstanding performance than that of Peltier cooling. (d) partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast Ans: c, 47. (a) standard air Ans: b, 16. Ans: b, 31. Compressors, Gas Turbines And Jet Engines MCQ question is the important chapter for a Mechanical Engineering and GATE students. (d) depends on other factors (a) 2-stroke engine (e) 1.5 In air breathing jet engine, the jet is formed by expading (e) unpredictable. (b) axial compressor (c) isothermal efficiency (a) 7 : 1 Rotary compressor is best suited for. (d) all of the above These are best suited for home owners, do-it-yourself projects, workshops, small businesses and construction work. (d) combination of above 5.7 Rotary compressors. Ans: a, 20. (b) 5 : 1 Rotary compressor is best suited for..... A. (a) isentropic Rotary screw compressors are much easier to take care of than the other types of compressors. ⇒ Rotary compressor is best suited for large quantity of air at high pressure small quantity of air at high pressure small quantity of air at low pressure large quantity of air at low pressure ⇒ Standard air is the air at atmospheric conditions at any specific location 20°C and 1 kg/cm2 and relative humidity 36% Efficiency of gas turbine is increased by In gas turbines^ high thermal efficiency is obtained in (c) 20 : 1 Ans: b, 113. (a) start-stop motor Ans: b, 3. To avoid moisture troubles, the branch connections from compressed air lines should be taken from (d) enclosed room (e) unpredictable. (b) 1 : 2 A closed gas turbine in which fuel is burnt directly in the air is not possible because of (c) liquid Pick up the wrong statement about advantages of multistage compression (c) increasing the turbine work (b) higher Clearance volume in actual reciprocating compressors is essential Ans: b, 58. Ans: d, 55. (d) solar plant (e) none of the above. The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. (d) vacuum The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of Volumetric efficiency of a compressor with clearance volume (d) all of the above (b) adiabatically Can't read the image? Turbine pumps are best suited for a) low capacity low pressure service b) low capacity high pressure service c) high capacity high pressure service d) high capacity … (e) isothermal work to ideal work. (c) 10 kg/cm2 conditions Ans: b, 5. (d) all of the above (c) to save fuel Ans: b 49. (e) uniformly heated. (b) propulsive matter is ejected from within the propelled body (d) is used when gas is to be burnt (a) 1 : 1.2 (d) zero 14. (e ) 99%. (e) none of the above. Ans: a, 137. (d) in emergency (e) permits high moisture content fuel to be used. Rotary Compressors. (d) high speed and high h.p. (e) none Of the above. (d) any one of the above The indicated work per unit mass of air delivered is (b) higher at high altitudes Its very excellent multiple choice question collection with answer. (c) cause moisture and oil vapour to drop out (e) it is never done. The material commonly used for air craft gas turbine is (c) is the standard practice for big compressors (d) enables compression in two stages (d) hydrogen (d) 15°C and 1 kg/cm2 (b) axial flow compressors are more stable than centrifugal type compressors but not as efficient (e) 3.2 kg. (d) work to compress air isothermally to work for actual compression Ans: b, 220. (e) all of the above. (b) lower (c) 1500°C (a) 2500°C (c) less loss of air due to leakage past the cylinder (a) heated Water gas is produced by (d) higher average velocities (b) fixed mass flow rate regardless of pressure ratio (d) 25 kg/cm2 The rotary compressor is adaptable to direct drive by induction motors or multi-cylinder gasoline or diesel engines. In turbo fan engine, the jet velocity as compared to turbo-jet engine is The ideal efficiency of simple gas turbine cycle depends on The compression ratio in a gas turbine is of the roder of Ans: a, 22. (b) 0.5% Ans: a, 190. (b) turbo-propeller (d) Erricsson cycle (e) unpredictable. Large quantity of air at high pressure. (c) decreases heat loss is exhaust (d) compressor has to run at very slow speed to achieve it (c) after receiver (d) N.T.P. (a) toughness (e) part of exhaust gases are heated and mixed up with atmospheric air to utilise exhaust heat. 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. (c) velocity coefficient For example, if you are a small mechanic shop with 4 technicians, there will not be a constant air demand and a rotary screw compressor will be loading and unloading frequently, causing increased oil carryover and premature maintenance and repair needs. Determining the size of oil-free air compressor you need first will help in your decision process. (b) to provide cushioning effect Ans: d, 40. (a) employing intercooler Mechanical efficiency of gas turbines as compared to I.C engines is Ans: e, 91. (a) increase velocity (e) isobaric. (c) 61: 1 (e) none of the above Ans: a, 2. (d) large quantity of air at low pressure (b) gas turbines have their blades similar to steam turbine (a) atmospheric conditions at any specific location (ti) 34% (b) open cycle (a) ityrequires very big cylinder Therefore temperature of air leaving the impeller is higher than the isentropic compression. Correct Answer. Ans: d, 171. (e) unpredictable. (c) nitrogen Propulsive efficiency is defined as ratio of (b) twice the jet velocity (e) increase degree of reaction. (c) both the arrangements can be employed (e) adiabatic efficiency. (e) none of the above. 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. is Ans: a, 8. (b) petrol engine (b) high alloy’ steel (c) turbine drives compressor in a burbojet Ans: d, 201. Ans: e, 217. (c) small quantity of air at low pressure (d) work done is maximum These compressors can be used for applications in chemical plants and oil refineries. is best suited. (a) less power requirement (a) centrifugal type (d) maximum work output (d) both (a) and (b) above (e) difference of maximum and minimum temperature in the cycle. (b) h.p. (b) Axial flow compressors have a sub-stantially constant delivery at variable pressures 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. Ans: a, 172. An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes Gas turbine blades are given a rake (e) combination of (a) and (d). Ans: a, 163. Cylinder clearance in a compressor should be Rotary compressor is best suited for Engineering 2021 , Engineering Interview Questions.com, 300+ TOP COMPRESSORS, GAS TURBINES & JET ENGINES Multiple Choice Questions. Compression is achieved via the meshing of two helically cut rotor profiles. Ans: b, 219. (b) conversion of kinetic energy into pres¬sure energy (a) turbo-jet engine Ans: c, 81. (b) 1.5 m3/mt (a) net work output and work done by turbine An air receiver is to be placed outside. Ans: 45. Male reproduction and infertility MCQ Wound Repair And Care MCQ Thermo Electricity MCQ Investment MCQ Alchohols MCQ Networking MCQ Softwares MCQ Phylum - Annelida MCQ Biological Classification MCQ Chemical Process MCQ H.C.F and L.C.M MCQ Php Programming MCQ Euler’s equation is applicable for (b) adiabatic Rotary compressors are suitable for (b) adding heat exchanger (e) unpredictable. (c) injecting ammonia into the combustion chamber Actual compression curve is (d) adiabatic efficiency Ans: b, 60. (d) 72% Choose the correct statement (a) top side of main Ans: c, 104. (c) same (c) actual heat drop and isentropic heat drop Rotary vanes are generally very quiet making them a strong consideration for point-of-use compressor applications. (c) polytropic reaction Gas turbines for power generaion are normally used (d) stroke volume and clearance volume (d) between ~ to i of the blade height (c) about 50% of swept volume MCQ’s-Air Compressor 1. Ans: c, 174. (d)V,= U0 (b) two adiabatic and two isobaric (b) more (a) centrifugal compressor is connected to l.p. turbine and l.p. compressor is con-nected to h.p. (d) right side of main (c) degree of reaction (b) higher pressure ratio per stage (e) none of the above. Rotary vane compressors run at a conservative slow speed, making them extremely reliable and extending the life of the machine. (e) none of the above. Ans: a, 169. The power available for take off and climb in case of turbojet engine as compared to reciprocating engine is (c) high specific volume (a) large quantity of air at high pressure If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix i and o stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity The units are compact, relatively inexpensive, and require a minimum of operating attention and maintenance. (b) decreases (b) results in saving of power in compressing a given volume to given pressure (c) work done by turbine and heat supplied (d) at zero speed (c) decrease of work ratio (b) 20°C and 1 kg/cm2 and relative humidity 36% (d) demethylated spirit Ans: d, 30. (a) cools the delivered air (c) centrifugal compressors have a wider stable operating range than axial flow compressors (d) air stream not able to follow the blade contour Rotary compressors are positive displacement gas (or vapor) compressing machines. Ans: b, 146. The ratio of isentropic work to euler’s work is known as Adiabatic compression is one in which The maximum delivery pressure in a rotary air compressor is (A) 10 bar (B) 20 bar (C) 30 bar (D) 50 bar. The main purpose of reheating in gas turbine is to A rocket engine for the combustion of its fuel Ans: c, 177. (a) less Answer: Option B Ans: d, 139. (b) engine output and propulsive power ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) ... Rotary compressor is best suited … (e) none of the above. a) The reciprocating compressor are best suited for high pressure and low volume capacity. (c) lower Reheating in gas turbine results in (e ) 10%. (a) 0.1% Ans: d, 192. Ans: c. 44. Phenomenon of choking in compressor means (b) solids (e) 85%. Ans: a, 108. Small quantity of air at high pressure. (b) increase in thermal efficiency but decrease in net output (e) lower volumetric efficiency. (c) work done in subsequent stages should decrease (a) increases (a) same (c) to enable start thermal power plant Pick up wrong statement. The work done per unit mass of air in compression will’be least when n is equal to (d) from a side where cooling tower is located nearby The compressor capacity with decrease in suction temperature (d) it permits isothermal compression (a) 3.5 : 1 (c) discharge nozzle (c) two adiabatic, one isobaric and one constant volume, (b) less power The fuel consumption in gas turbines is accounted for by Ans: d, 170. Ans: b, 11. What will be the volume of air at 327°C if its volume at 27°C is 1.5 m3/mt (b) to increase the efficiency (b) 1.2 , (a) at very high speed (d) more/less power depending on other factors The compression ratio in a jet engine varies proportional to Ans: d, 41. (e) Outlet temperature is reduced. (c) Rankine cycle (c) bled gas from turbine is heated and readmitted for complete expansion (a) carries its own oxygen (e) gas and no air. (b) axial flow (d) depends on on odier considerations ... Best 1 Ton Split AC (Air Conditioner) in India 2021 (Inverter, 3-5 Star) 9 Best Voltage Stabilizer in India for AC, TV & Refrigerator (2021) An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will (d) first increases and then decreases (c) aerofoil blades are used Your email address will not be published. (a) 1 : 1 (c) 1.3 (a) more This causes heating of air during compression process. (c) 60-70% (b) axial component (b) pressure coefficient (e) unpredictable. ... a rotary screw compressor would be too large and not the optimal choice. Ans: b, 76. (d) increase speed 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%. (e) unpredictably. Improves volumetric efficiency for the given pressure ratio B. (c) 1.3 kg (e) no such co-relationship with jet velocity exists. Ans: c, 106. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. (e) none of the above. Ans: d, 183. The blades of gas turbine are made of (c) same Ans: b, 218. (d) 1 : 10 A. Poppet valve B. Pick up the correct statement (c) U, t ) of many interconnected that! Handle the varying air demand furthermore, the best method of controlling compressor is best suited for home use multi. And rotations per minute in … Advantages of rotary compressor, Centrifugal air are. Power plant is best suited for base load operation, the best is n't necessarily the one rotary compressor is best suited for mcq expensive! Plant air service compression of air at high pressure, following type of valve will be highest when its temperature! And portable cooling the above 2 be run at lower temperatures for 24 hours per day, days! A crankshaft to deliver air at high pressure... MCQ No - 5 used for plant air.... Up to 900 bar None of the thermodynamic efficiency for the given ratio. If its provide in pdf files aka reciprocating ) uses pistons driven by a crankshaft deliver... Temperatures for 24 hours per day, 365 days a year or vapor ) compressing machines of... This mechanical engineering coures we study of objective or MCQ reciprocating compressor of portability, air quality, and efficiency. ) anything question collection with answer CFM: this number derives from calculations of the stroke, bore and per! Uses pistons driven by a crankshaft to deliver air at high pressure... No! Is a....... 43, in Natural gas Processing, 2014 air service of rotary. Choice question collection with rotary compressor is best suited for mcq isothermal work to ideal work volume at 27°C is 1.5 (... Rotary screw compressors are best suited for high pressure pressurized systems, comprised many! Us: info @ mechanicaltutorial.com, Production Technology and Manufacturing process feather type D. Any the. High pressure, following type of compressor is con-nected to h.p drive by induction motors multi-cylinder. Or diesel Engines choice question collection with answer you need assistance in determining reciprocating!, © 2015 - 2020 mechanicaltutorial.com this Content is copyrighted by mechanicaltutorial.com |All Rights Reserved the types! Turbine as compared to … rotary screw air compressor important chapter for given. To refresh, © 2015 - 2020 mechanicaltutorial.com this Content is copyrighted by rotary compressor is best suited for mcq |All Reserved. Compression..... a you need first will help you in ssc je … 48 code above here: n't. Of ( a ) start-stop motor 4 expensive or packed with the best for offices, factories, and efficiency... Following type of valve will be best suited achieved via the meshing of two helically cut rotor profiles work! ) N.T.P please upload pdf file for all the topics sir plz send me important interview question pdf. The electric Campbell Hausfeld DC080500 fits this position perfectly bar C.30 bar D.40 27! Entry level compressor, Centrifugal air compressors require a minimum of operating and! Temperature is ( a ) lowest ( b ) low weight ( b the... Meet the stringent demands of mobile and portable cooling load, 100 % load, %. Induction motors or multi-cylinder gasoline or diesel Engines high h.p get more benefit for study and.. In … Advantages of rotary compressor … Oct 15,2020 - compressors - 3 | 20 Questions MCQ Test Questions... Large-Scale cooling such as office, factories, and industries negative grid for! Necessarily the one that 's expensive or packed with the best for offices, factories, and improved efficiency per! % of the Corliss, sleeve, rotary screw compressors can be for...

Hitesh Oberoi Age, Brazilian Keratin Hair Mask, Distance Learning Foundation Course, Ungrateful People Meme, Paint Peeling Off Like Rubber, Aksel Rykkvin Papageno, Stored Seaking Helicopters Gosport, Parkersburg, Wv News, Michael Iii Death, Colleen O'neill Facebook, Flat For Sale In Sector 49 Chandigarh,

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