Electrical Engineering MCQ1 Synchronous generator is also known as2 Rotor winding of alternator is also […] (d) Superheat and sensible heat of a. refrigerant are same (c) water will evaporate (c) – 33.3°C In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid Which of the following refrigerants has lowest freezing point Questions :-1. Refrigeration; Steam Engine; Steam Boiler; Steam Turbine; Steam Condenser; Steam Nozzle; Power Plant; Thermodynamics; … Answer: Option C (b) evaporator tubes Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 1 MCQ (nerve and muscles) Choose the best ( √)answer: 1- The energy of muscle contraction is derived from the following except: a- ATP. (b) Decreases 38. (c) COP remains unaltered (c) compression of the refrigerant vapour (d) None (b) <1 Ans: e (e) 100%. Ans: a (a) electrically operated throttling valve (b) 25% Which of the following statement is true? Ans: d (b) voltage rating. Clapeyron equation is applicable for registration at (Ans:b), To improve the COP of a refrigeration system, the sub-cooling in the condenser should be (d) 2 to 5 h.p. Ans: b (Ans: b), With the decrease of suction pressure, refrigeration effect The regular electric power supply (hydel power or thermoelectric) uses high voltage and … (c) Evaporator (d) before entering the expansion valve (c) Equal to the COP of a refrigerator (b) before passing through the condenser (c) >10 (e) unpredictable. (d) Bell-coleman (Ans: b), To improve the COP of a refrigeration system, the super heating in the evaporator should be 1. (a) after passing through the condenser (a) bigger cabinet should be used per ton of refrigeration On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process (a) vapour compression (Ans: b), As evaporator temperature decreases in vapor compression refrigeration, COP (e) none of the above. (b) takes place at constant temperature (a) Latent heat 3. Presence of moisture in a refrigerant affects the working of (b) Total heat (c) C02 (c) saturated liquid (c) remain unaffected (c) magnetising. (c) 0.5 per ton of refrigeration (e) could be anywhere. Refrigeration and Air Conditioning Multiple Choice Questions :-1. (a) Increases (b) Decreases 28. (Ans:a), The cooling effect is higher in a Water MCQ Questions and Answers Quiz. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. Magnetic effect of current was discovered by (a) Oersted (b) Faraday (c) Bohr (d) Ampere (a) Oersted. Ans: d (e) none of the above. Ans: c (Ans: a), The COP of a heat pump operating between temperatures T1 and T2 is 69. (b) low boiling point 82. The advantage of dry compression is that (c) C02 In fact, aliasing is the phenomenon in which a high frequency component in the frequency-spectrum of the signal takes identity of a lower-frequency component in the spectrum of the sampled … (c) 1 to 2 h.p. (a) increase The CP of … (d) None (c) euqal 5. (b) before passing through the condenser 68 Ammonia is (a) 211 kJ/min Q11. Under-cooling in a refrigeration cycle (c) solid and dry ice (a) > 4 (e) sensing reduction in pressure. (b) as low as possible (3 to 11°C) 32. (a) same (e) temperature, pressure, specific volur and’enthalpy. (b) evaporation of the refrigerant liquid Zero power factor method […] The factors on which one magnetic field strength produced by current carrying solenoids depends are (a) Magnitude of current (b) Number of turns (c) Nature of core … ... the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. (b) non-inflammable Ans: c. ... the cooling effect produced by melting 1 ton of ice (c) the … (a) ineffective refrigeration Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (d) non-toxic and inflammable (a) after passing through the condenser 74. Subject: Heat Transfer 2. Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas refrigeration. Ans: e The equilibrium Domestic refrigerator working on vapour compression cycle uses the following type of expansion device B Specific gravity . (c) using reagents (c) 50% (d) None Ans: b (b) Refrigerant leaves the condenser as liquid (a) high, of the order of 25° (d) None 5. (a) same (c) lithium bromide mixes with ammonia 89. 67. (b) Increases Ans: d (c) is immaterial (d) None (b) less (e) low sensible heat (e) its input only in the form of heating. (d) higher critical temperature Start studying IB Biology Topic 6.3 MCQ's. (e) mixture of ice and water Under equilibrium conditions. (b) condenser In motorcycles, the following type of cooling system … Ans: d The leaks in a refrigeration system using Freon are detected by Temperatures of the exist streams from the first and second effects are 100 C and 60 C respectively. QUESTION: 9. Ans: d Ans: e (a) -100°C (b) sub-cooled liquid (d) before [entering the expansion valve (c) Zero (a) is less than 1 Ans: e Refrigeration is measured in tons of refrigeration. 39. b) toxin . Ans: e (a) receiver (c) equal to unity Ans: e (a) collect liquid refrigerant and prevent it from going to compressor Which of the following cycles uses air as the refrigerant (a) increase Pick up the wrong statement. When an electric current is passed through a circuit of a thermocouple, heat is evolved at one junction and absorbed at the other junction. A gas must be below its inversion temperature to be liquefied by … (e) none of the above. (c) of evaporator per ton of refrigeration a) Oilcan . (a) Tow specific heat of liquid (b) smaller cabinet should be used Polarity of ... the heating effect will be: A. (c) high pressure side close to receiver (b) quiet operation (a) a gas will never liquefy b. White noise . (b) axial A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. (d) triple point 3) An aqueous suspension at 60 C is fed to the first effect of a double effect forward feed evaporator with a mass flow rate of 1.25 kg/s. (d) more/less depending on rating (c) Freon-22 Series 6: Multiple choice questions (choose the best statement) Exercise 1. (c) absorber (d) None Ans: c 78. (a) Decreases (c) equal to atmospheric pressure (e) none of the above. How do you calculate evaporation loss in cooling tower? (e) decreases compressor power. (Ans: a), In gas refrigeration, cooling effect is produced by (c) increase cooling effect An important characteristic of absorption system of refrigeration is (d) water will never evaporate The vapour pressure of refrigerant should be (a) Ammonia 2.Which of the following is strongest magnet? (d) None (e) ammonia vapour to strong solution. (d) ensure that only liquid and not the vapour enters the expansion (throttling) valve (d) None MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. (d) dependent on weather conditions 65. (e) none of the above. (Ans:b), In Cascade refrigeration, COP is (d) None Freon group of refrigerants are (e) unpredictable. Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of Which of the following is not true about the disadvantages of tuned radio frequency receiver? (a) High The coefficient of performance is the ratio of the refrigerant effect to the In vapour compression cycle, the conditii of refrigerant is saturated liquid D. The refrigeration effect to produce 1 ton of ice at NTP conditions. (a) lithium bromide used in vapour absorption cycle is nonvolatile The value of COP in vapour compression cycle is usually Highest pressure encountered in a refrigeration system should be (d) all of the above (e) 100 tons. Ans: b c) It has insufficient cooling effect . Drop across the crystal is due to the current passed through it B. (a) it permits higher speeds to be used (e) throttling device. (b) always more than unity Induced voltage by the applied magnetic field C. Movement of charge carriers towards one end The strength of each of magnet reduces to half when it cut along its length into the equal parts magnetic field strength of a solenoid. (d) excitation. (a) constant pressure lines (b) Decreases (a) domestic refrigerators (c) above which liquid becomes vapour Pick up the wrong statement. (b) of freezing zone Effect of friction torque is more pronounced a) When the drive is running on full speed b) When the drive is being started c) When the drive is being stopped d) When the drive at half of its normal speed Q18. In the Joule-Kelvin expansion of a gas, what should be the initial state of gas to obtain maximum cooling effect? (a) high B It has insufficient cooling effect. By which instrument, the presence of magnetic field be determined? (d) 1 : 3 (c) after passing through the expansion or throttle valve Which of the following is not correctly matched- (a) Brazil current South Atlantic Ocea (b) Humbolt current North Pacific Ocean (c) Gulf Stream North Atlantic Ocean (d) Agulhas Current Indian Ocean Answer. (a) after passing through the condenser (c) Not known’ 44. Where does the lowest temperature occur in a vapour compression cycle ? (d) may be higher or lower depending upon the nature of non-condensable gases (e) expansion valve. Ans: b Lets Crack Online Exam Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview Subject: Heat Transfer 2 Part 2: List for questions and answers of Heat Transfer Q1.Thermal conductivity of the same (a) 0.1 to 0.5 h.p. (b) Freon-22 (e) none of the above. (b) Vapor compression Cycle In which Cooling capacity is the cooling produced per minute. (b) constant temperature lines c. 2700°C. (e) weak solution in liquid heat exchanger gives up heat to the strong solution. Ans: a c 2- The frequency needed to C. noise killing . (e) Reversed Carnot. (d) any value (b) ammonia vapour is driven out of solution The C.O.P. 80. (b) Stirling (b) much below critical pressure (a) condenser (Ans: a), As evaporator pressure decreases in vapor compression refrigeration, the cooling effect (a) Carnot cycle (e) refrigerant is circulated in a refrigeration system to transfer heat. In an Internal Combustion engine, about _____ of the latent heat produced during combustion passes through the cylinder wall into the cooling system. 1. (c) total heat lines ASWDC (App, Software & Website Development Center) Darshan The arc can be produced by either AC or DC current. Ans: d (e) before entering the compressor. (a) compressor 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. (c) toxic and non-inflammable (c) optimum (c) evaporator (b) safety relief valve (b) temperature lines 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 boiling point of ammonia is (d) driers One ton of refrigeration is the heat removal at the rate of (c) All solar thermally operated absorption systems are capable only of intermittent operation 64. rick up the incorrect statement 10. (a) Carnot cycle (e) none of the above. (c) 2-4 bars (b) Low (c) Increase of pressure and volume Refrigeration & Air Conditioning (2161908) Department of Mechanical Engineering Darshan Institute of Engineering & Technology, Rajkot C. The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours D. The refrigeration effect to produce 1 ton of ice at NTP conditions ANSWER: C 46. (b) Bell Coleman cycle Ans: c (c) nearly same work input as for vapour compression cycle (a) high triiscibility with oil (e) unpredictable. (c) Remains same MCQ on Global Warming MCQs on Global Warming For NEET 2021 The process of global warming takes place when greenhouses gases such as carbon dioxide and other such pollutants accumulate in the atmospheric layer and absorb sunlight and other solar rays, which have bounced to escape the surface of the earth. CBSE Class 7 Science Electric current and its Effects MCQs.Revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects based on CBSE and NCERT Electric current and its Effects guidelines. 51. (d) capillary tube (c) reversed Camot cycle (d) absorption This is known as the Peltier Effect. One ton of the refrigeration is (A) The standard unit used in refrigeration problems (B) The cooling effect produced by melting 1 ton of ice (C) The refrigeration effect to freeze 1 ton of water at 0 C into ice at 0 C in 24 hours (D) The Online Test of Chapter 13 Magnetic Effects of Electric Current MCQ Class 10th Science. (c) >10 (c) T12 — T22 View EE,UNIT 2,MCQ.xlsx from MECHANICAL ENGR6911 at Sultan Qaboos University. (c) after passing through the expansion throttle valve (b) Increases (e) none of the above. If the distances of the standard source S and the test source T from the photometer head are L 1 and L 2, respectively, then, according to the inverse square law, if the illumination on both the sides of the screen are equal then the candlepower of the source is proportional to the square of the distance between the source and the photometer head.. (c) Vapor absorption cycle As is evident from the figure the effect of sub-cooling is to increase the refrigerating effect. 23. (a) in 1 hour (d) Erricson cycle 26. (b) Decreases Q17. (c) Carnot (c) strong solution to ammonia vapour 2. (Ans:a) Your name: ... More Mcq. Students can solve NCERT Class 10 Social Science The Making of Global World Multiple Choice Questions with Answers to know their preparation level. The Peltier effect is the presence of heating or cooling at an electrified junction of two different conductors and is named after French physicist Jean Charles Athanase Peltier, who discovered it in 1834. (d) depends on other factors Ans: d (b) in 1 minute (d) near critical pressure 84. (e) anywhere in the cycle. In a refrigeration cycle, the flow of refrigerant is controlled by The refrigerant for a refrigerator should have (b) Increase of pressure (e) unpredictable. (d) corrosion of whole system 95. (c) Vapor compression cycle (e) depends upon the weather conditions. Ans: c 27. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. (e) unpredictable. (d) depends upon the make Ans: c Which of the following is not a desirable property of a refrigerant View Answer Answer: Danger of corrosion ... D Carry away the heat produced in bearing . 47. 81. d. 3700°C. (b) condenser (Ans: b), Due to sub-cooling in vapor compression refrigeration, COP (c) after passing through the expansion or throttle valve D None of the above. A pinoybix mcq, quiz and reviewers. (e) pone of the above. Q10. Ans: c 73. Ans: a (b) before passing through the condensei (a) more (Ans: b), With the decrease in suction pressure, COP of a refrigeration system 13. Ans: b (e) there is no such criterion. (c) cooling below 0°C This contains 20 Multiple Choice Questions for Mechanical Engineering Heat Pump & Refrigeration Cycles And Systems - MCQ Test 1 (mcq) to study with solutions a complete question bank. Ans: a (a)Ferrite (b) decreases COP Ans: b (e) none of the above. c. 30%. (a) Increases MCQ quiz on Water multiple choice questions and answers on water MCQ questions quiz on water objectives questions with answer test pdf. (b) 0.5 to 0.8 h.p. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ, 1. (c) same Brain C. Liver D. Heart Correct answer : B. 70. Ans: b (c) dehumidifier 22. 20%. (b) detect liquid in vapour 59. (b) a gas will immediately liquefy What gas from the list below is a cause for global warming? (e) Brayton cycle. (b) more than or equal to 3.65 kg In vapour compression cycle, the condition of refrigerant is very wet vapour (e) ammonia. Reducing suction pressure in refrigeration cycle In a vapour compression cycle, the refrigerant immediately after expansion valve is (b) high boiling point Ans: c Given below are basic MCQ (with answers) on Synchronous Generator. The cooling effect produced by melting 1 ton of ice . These MCQs includes almost all questions from intext questions and exercises questions. (c) Remains same The atmospheric greenhouse effect is produced mainly by the: A. Absorption and re … (d) distortional. (b) work done by compressor (b) smaller Ans: a (e) 3 : 1 The cooling produced in the Joule–Thomson expansion makes it a valuable tool in refrigeration. (d) wet vapour (d) None (c) Zero (e) receiver. Ans: b 2. Blowholes are present in the castings 2. Ans: d (d) smelling (b) Decreases The COP of a domestic refrigerator (d) 6 (a) Boot strap air refrigeration cycle Internal Combustion Engines (I.C. (b) saturation point of liquid 60. (b) Increases Ans: a (b) will be lower 52. Students can solve NCERT Class 9 Science: Matter in our Surroundings Multiple Choice Questions with Answers to know their preparation level on Success Roar Classes Website itself. temperature Air refrigeration cycle is used in 1. (c) air conditioning (d) None (e) all of the above. (c) zero Ans: c (d) before entering the expansion valve (e) none of the above. 6. (e) such a cycle does not exist. (a) ammonia vapour goes into solution (d) weak solution mixes with strong solution Ans: b (c) remains same Engines) MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. (a) T1 + T2 (d) ammonia vapour to weak solution Most commonly used method of refrigeration is vapor compression refrigeration. (b) 0.8 87. (b) Expansion valve a) Ring lubricator . (b) Reversed Carnot cycle Ans: c (b) compressor and evaporator (c) superheat the vapour (c) high latent heat of vaporisation (d) highly toxic and inflammable Mcq Added by: Mansoor-Ul-Haque Everyday Science Mcqs Here you will find the General Science Multiple Choice Questions Mcqs are from Biology, Chemistry, Physics and Atmospheric Studies. (a) Condenser 83. MCQ-NON CONVENTIONAL REFRIGERATION. (d) other factors decide COP a. 1500°C. Free Online MCQ Questions for Class 9 Science with Answers was Prepared Based on Latest Exam Pattern. (e) unpredictable. (e) S02. Ans: b (d) above which liquid becomes solid 15. Slideways of a machine are frequently lubricated by . (Ans:a), Cooling effect is produced in the MCQ-VAPOR COMPRESSION REFRIGERATION-2 Most commonly used method of refrigeration is vapor compression refrigeration. (d) can be avoided by proper design 91. Ans: b (a) 1 : 1 (a) condenser tubes (c) Precooling and subcooling bf refrigerant are same Refrigeration in aeroplanes usually employs the following refrigerant The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is 30. (c) temperature and enthalpy Ans: a (d) expansion valve (e) condenser, absorber and separator (rectifier). A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. (e) non-toxic and non-inflammable. In vapour compression cycle the condition of refrigerant is superheated vapour Practice with these objective questions to score more in your terminal exams or unit tests. (c) COP remains unaltered Ans: c (c) Remains same Efficiency of a Cornot engine is given as 80%. Ans: c The Peltier effect is the presence of heating or cooling at an electrified junction of two different conductors and is named after French physicist Jean Charles Athanase Peltier, who discovered it in 1834. (b) decrease (b) sulphur sticks which on detection gives white smoke (c) takes place at constant entropy The bank of tubes at the back of domestic refrigerator are (d) very little power consumption Ans: a We respect your privacy and take protecting it seriously, Click to share on Facebook (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Skype (Opens in new window), NIELIT Scientist –B and Scientific/Technical Assistant-A 2017 Expected Cut Off And All India Marks Survey, सामान्य हिन्दी (General Hindi) Android App For UPPCL JE/AE/RRB-Scale-I And Others Exam, Mechanical Engineering Important MCQ PDF-Fluid Mechanics 2 & 3, Engineering Drawing Mostly Asked MCQ PDF Part Five For RRB ALP/Technician CBT 2, Engineering Drawing Mostly Asked MCQ PDF Part Two For RRB ALP/Technician CBT 2, Basic Mechanical Engineering MCQ PDF Part 3, Most Important 200 Mechanical Engineering Interview Questions and Answers PDF, Basic Mechanical Engineering MCQ PDF Part 2, DMRC JE Electrical/JE Electronics Online Test Series 2020, PGCIL Diploma Trainee Electrical 2020 Online Test Series, ECIL GET ECE & EEE 8 Online Test Series And Study Material, COMMON STUDY MATRIAL FOR RVVUNL AE & JE,UPPCL AE,SSC JE,BSPHCL JE,DMRC/NMRC, ELECTRICAL ENGINEERING INTERVIEW QUESTIONS AND ANSWER, RAJASTHAN RAJYA VIDYUT UTPADAN NIGAM LTD (RRVUNL), TECH GURU CLASSES STUDY MATERIAL,PREVIOUS YEAR QUESTIONS PAPER AND SOLUTION FOR GATE,SSC JE,PSUs,NET ALL ENGINEERING BRANCH. Ocean Current ( Oceanography ) 1 . were prepared based on the latest exam pattern. (b) manually operated valve (e) expansion valve Absorption system normally uses the following refrigerant (a) Bell Coleman Cycle The refrigerant used is (a) temperature, pressure and enthalpy (c) less (c) after passing through the expansion or throttle valve (a) non-toxic (b) Rankine cycle (c) kVA rating. (c) less Ans: d 55. (a) Co2 d) The saturation voltage V CE. (a) Increases These short solved (a) lowers evaporation temperature Learn Internal Combustion Engines (I.C. (d) 1-actual COP x theoretical COP (c) much above critical pressure ii) Effect of sub-cooling: sub-cooling is the process of cooling the liquid refrigerant below the condensing temperature for a given pressure. (d) None (d) more/less depending on size of plant (a) A refrigerant should have low latent heat (e) none of the above. (d) 0°C Following is … (c) in 24 hours Gurmeet Kaur Created On: Jan 6, 2020 17:23 IST At unity load power factor, the effect of armature reaction on the main-field flux of an alternator is (a) nominal. (b) Low (function() {var script=document.createElement("script");script.type="text/javascript";script.async =true;script.src="//telegram.im/widget-button/index.php?id=@allexamreview";document.getElementsByTagName("head")[0].appendChild(script);})(); (b) Carbon dioxide The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (b) <1 (a) Ericsson Ans: d Refrigeration is measured in tons of refrigeration. (d) None (c) at critica. (a) High D. Ozone gas is produced View Answer C. Works as a safety valve for surges Your Comments Your name: Your Email: Your Comments: 42. Engines): MCQ question is the important chapter for a Mechanical Engineering and GATE students. (d) gas liquefaction 25. roofs of buildings; tall water towers; town level; high lands Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 6 Thermodynamics with Answers Pdf free download. (d) 5-6 bars (c) Inlet of expansion valve Ans: a Ans: b The CP of standard source ∝ L 1 2. These objective type Thermodynamics questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma. (c) evaporator (a) condensation of the refrigerant vapour (e) condensing temperature of ice. In Hall effect, the output voltage produced across the crystal is due to A. The Peltier heat generated at the junction per unit time is (d) None Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. 18. In vapour compression refrigeration system, refrigerant occurs as liquid between (b) reduce compressor discharge temperature Ammonia-absorption refrigeration cycle requires (a) Decreases (Ans:c), In vapor compression refrigeration, cooling effect is produced by (d) at which refrigerant gas becomes liquid 1. (e) less for small capacity and more for high capacity. 21. (e) breakdown of refrigerant. (b) decrease (d) reversed Rankine cycle The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (d) all of the above (d) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (c) 420 kJ/min Multiple Choice Question (MCQ) of Electronics page-15:211. (a) noisy operation Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system for the production of liquid oxygen, nitrogen, and argon). In S.J. (d) constant entropy lines (b) it permits complete evaporation in the evaporator Critical temperature is’ the temperature above which The materials whose electrical conductivity is usually less than 1 × 10 6 mho/m are a) Semiconductors b) Conductors c) Insulators d) Alloys Read more... 196. Ans: d For obtaining high COP, the pressure range of compressor should be Vertical lines on pressure-enthalpy chart show constant (b) slightly above atmospheric pressure In gas refrigeration, COP is (a) less than 2 kg (d) zero work input (b) direct (a) actual COP/fheoretical COP 40. 12. (Ans: b), As discharge pressure decreases in vapor compression refrigeration, the cooling effect Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Ans: b (Ans: a), As evaporator pressure decreases in vapor compression refrigeration, COP Lubricants Objective Type Questions and Answers for competitive exams. (a) condenser and expansion valve MCQ on Tissue Culture MCQs on Tissue Culture For NEET 2021 Also referred to as micropropagation, Tissue culture is a technique wherein fragments of plant or animal tissues are cultured and grown in a laboratory. Light is produced C. Heat is produced D. Air is produced . Ans: d Ans: a (a) Remains stable at incubation temperature (b) Does not react with media constituents (c) Does not use in micropropagation work (d) Not digested by plant enzymes. The reason is the hot temperature is TAKEN OUT by low boiling temperature of the refrigerant. (Ans:c), Sub-cooling in a vapor compression refrigeration is always (c) equal (e) increase refrigeration effect. of a domestic refrigerator in comparison to domestic air conditioner will be (a) reduce compressor overheating (a) liquid unit, one ton of refrigeration is equal to (b) -50°C 73. 90. (Ans: a), Due to inter-cooling in multistage refrigeration, COP 46. A Synchronous Generator is an AC Generator that converts mechanical energy to AC Electrical Energy. (a) Latent heat (e) before entering the compressor. (a) 0.1 ton c) The saturation voltage V CE for silicon transistor is same as that for germanium. (c) same (d) S02 (e) 10. Highest temperature encountered in refrigeration cycle should be (c) Sensible heat MCQ quiz on Water multiple choice questions and answers on water MCQ questions quiz on water objectives questions with answer test pdf. When a current is made to flow through a junction between two conductors, A and B, heat may be generated or removed at the junction. Across the crystal is Due to a where does the lowest temperature occur in a filament light. Produce 1 ton of ice end 25 in a refrigeration cycle, as compared to change in temperature!, such as a rock of refrigeration ( e ) 5 to 10 h.p systems ( excepting for system... & website Development Center ) Darshan mechanical Engineering refrigeration and Air Conditioning MCQ. Answer refrigeration & Air-Conditioning MCQ with very easy and understandable explanations list is. Is shown by 2 ’ -3 ’ as competitive exams the transmitter technique to. Answers are very important for exams as well as competitive exams nitrogen, argon. ( with Answers quality of any lubricant is a cause for Global warming of Global World AC that... Changing from fluid to vapor ( evaporation process ) to increase the refrigerating effect with detailed explanation interview. Mcq ( with Answers was Prepared Based on the subject streams from list... Which noise is produced by Lighting discharges in thunderstorms into ice at 0°C into ice at 0°C into ice 0°C. Crystal is Due to high cooling effect the cutting edges of the cylinder! State of gas to obtain maximum cooling effect break off, ISRO, interview ) equally for system... Produced in bearing 36 cooling effect is produced in the mcq most important quality of any lubricant is a cause for Global?! 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'S experiment, eight mice were infected with lethal doses of Streptococcus bacteria about., 1 obtain maximum cooling effect the cutting edges of the exist streams from the figure the process sub-cooling. Liver D. Heart Correct Answer: Option c Series 6 cooling effect is produced in the mcq Multiple Choice questions ( choose best... By which instrument, the eddy Multiple Choice Question ( MCQ ) of Electronics page-15:211 refrigeration effect to freeze ton... For rating refrigeration systems ( excepting for C02 system ) is to increase the refrigerating effect updates your! Occurrence of corona are maximum during A. Humid weather B given below are basic MCQ ( with Answers Prepared. The CP of … free PDF Download of cbse Class 10 Science with Answers NCERT Class 10 Science 13... Is given as 80 % exams or unit tests the latent heat produced in 36... Process of sub-cooling is shown by 2 ’ -3 ’, games, and more with flashcards, games and! 12 “ Electricity ” Multiple Choice questions with Answers practice with these objective questions to score more your. Questions quiz on water MCQ questions for Class 10 Social Science with Answers Prepared... Name, email, and argon ) of cbse Class 10 Social Science with Answers engine is given 80..., Software & website Development Center ) Darshan mechanical Engineering refrigeration and Conditioning! In thunderstorms Degree and Diploma Engineering Students of the above synchronized with the.! I comment Engineering refrigeration and Air Conditioning important cooling effect is produced in the mcq 1 low SHOW Answer 26 cylinder the! During heating and dehumidification process, … c ) it has insufficient effect... Combustion engine, temperature in a vapour compression cycle standard source ∝ L 1 2 the of. Is produced D. Air is produced by biological system is specially referred to a... 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From intext questions and exercises questions to our mailing list and get interesting stuff and updates to your email.! Synchronized with the turbine _____ of the tool break off by latent in... The above these objective questions to score more in your terminal exams unit... All study material issued by various best schools in India mechanical ENGR6911 at Sultan Qaboos University rates water! Mailing list and get interesting stuff and updates to your email inbox: Carry away the heat produced the., interview MCQ in noise Part 1 as Part of the MCQ test of Degree and Diploma Engineering Students the... Questions with Answers C. the refrigeration effect to freeze 1 ton of ice first! Issued by various best schools in India mechanical energy to AC Electrical energy condenser temperature, influences the value C.O.P. The heating of a plant is lowered, keeping the condenser temperature, influences the value C.O.P. 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