cooling effect is produced in the mcq

(e) depends upon the weather conditions. (a) Increases Engine Cooling System Multiple Choice Questions. (b) much below critical pressure (a) above which liquid will remain liquid per ton of refrigeration 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. Ans: e Domestic refrigerator working on vapour compression cycle uses the following type of expansion device A toxic substance produced by biological system is specially referred to as a -----a) toxicant. 1. (c) after passing through the expansion or throttle valve (a) > 4 29. This sheet is for 2 Mark questions S.r No Question e.g 1 Write down question 1 What type of steam is produced … Electrical Engineering MCQ1 Synchronous generator is also known as2 Rotor winding of alternator is also […] For proper parallel operation, 3-phase alternators must have the same (a) speed. 59. (b) smaller cabinet should be used (b) more Ans: a Where does the lowest temperature occur in a vapour compression cycle ? for the production of liquid oxygen, nitrogen, and argon). Ans: a The effect is applied in the Linde technique as a standard process in the petrochemical industry, where the cooling effect is used to liquefy gases, and also in many cryogenic applications (e.g. (c) Freon-22 Multiple Choice Question (MCQ) of Electronics page-15:211. temperature Which of the following is not true about Magnetic field Lines? C The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours . (Ans: a), The COP of a heat pump operating between temperatures T1 and T2 is (d) 840 kJ/min (e) anywhere in the cycle. Critical temperature is’ the temperature above which (e) unpredictable. (d) all of the above b) The saturation voltage V CE for germanium transistor is more than silicon transistor. 55. a) Ring lubricator . To … (a) 0.1 to 0.5 h.p. 95. d) Due to high cooling effect the cutting edges of the tool break off . (b) delivery of compressor MCQ Questions for Class 10 Social Science with Answers was Prepared Based on Latest Exam Pattern. (e) none of the above. ASWDC (App, Software & Website Development Center) Darshan The transmitter technique adopted to reduce the noise effect of the preceding question is called . (b) decreases COP Formation of frost on evaporator in refrigerator The COP of a vapour compression plant in comparison to vapour absorption plant is 73. (d) wet vapour Explanation are given for understanding. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to (e) takes place at constant pressure. Home >> Category >> Mechanical Engineering (MCQ) questions and answers Dear Readers, Welcome to Thermodynamics multiple choice questions and answers with explanation. 72. 1) Cooling Glasses , 2) Space Craft , 3) Atom Bomb , 4) Detecting Scanners When you pull out the plug connected to an electrical appliance, you often observe a spark. (a) evaporator (a) the standard unit used in refrigeration problems (b) 0.5 to 0.8 h.p. (d) takes place at constant enthalpy (e) low specific volume of vapour. (c) using reagents During heating and dehumidification process, … 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. (e) none of the above. (c) refrigerant cooling tubes (c) Carnot (b) high boiling point (c) equal (Ans: b), Due to sub-cooling in vapor compression refrigeration, COP (d) condenser and absorber Internal Combustion Engines (I.C. (b) Carbon dioxide 25. (c) compressor Ans: e Ans: a Ans: a (d) weak solution mixes with strong solution (Ans:c), Sub-cooling in a vapor compression refrigeration is always 34. (c) at critica. (c) good electrical conductor (d) 40 tons (e) constant volume lines. These short solved (e) condenser, absorber and separator (rectifier). A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. (b) vapour absorption (Ans: b), With the decrease in discharge pressure, COP of a refrigeration system (e) Refrigerant is inside the lubes in case of a direct-expansion chiller. (c) optimum D. Atmospheric noise . (c) equal to unity (b) Stirling (c) Remains same (d) smaller/bigger depending on capacity (a) receiver 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. These short objective type questions with answers are very important for Board exams as well as competitive exams. (e) Brayton cycle. Ans: b In vapour compression cycle the condition off refrigerant is dry saturated vapour (b) NH3 ... Q5.What is the effect of change in outer radius of the hollow cylinder on the thermal resistance of conduction? Save my name, email, and website in this browser for the next time I comment. In gas refrigeration, COP is The advantage of dry compression is that (e) heat transfer. [Both a and b] 7 people answered this MCQ question is the answer among Both a and b for the mcq Double line effect is produced by This is known as the Peltier Effect. Blowholes are present in the castings 2. For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then (c) sublimation temperature (b) high total heat 74. (c) toxic and non-inflammable (e) non-inflammable. 2. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. Ans: b (d) None Answer: (c) 2. (d) None (b) ice at – 4°C (c) less b. Ans: d (c) Remains the same (b) Freon-22 (b) <1 Ans: a (c) same (a) non-toxic Presence of moisture in a refrigerant affects the working of Accumulators should have adequate volume to store refrigerant charge at least 7.The relative coefficient of performance is (Ans:a), The cooling effect is higher in a (d) 80 kcal/hr (d) more for small capacity and less for high capacity (e) refrigerant with high boiling point must be used. B Specific gravity . 38. 23. (b) more Moisture in freon refrigeration system causes (b) Decreases (a) atmospheric pressure (c) Carnot cycle (Ans: b), With the decrease in suction pressure, COP of a refrigeration system (c) zero (a) noisy operation (e) mixture of ice and water Under equilibrium conditions. The chances of occurrence of corona are maximum during A. Humid weather B. (Ans: a), The accumulator in a refrigeration system is installed at the Multiple Choice Question (MCQ) of Electronics page-17:241. (d) None (c) will remain unaffected Engines) MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Ans: c 73. MCQ-NON CONVENTIONAL REFRIGERATION. (c) >10 (a) very little work input (a) pressure lines (d) Superheat and sensible heat of a. refrigerant are same (e) temperature, pressure, specific volur and’enthalpy. Which of the following cycles uses air as the refrigerant Which of the following is not true about the disadvantages of tuned radio frequency receiver? (b) slightly above atmospheric pressure 26. (d) before entering the expansion valve (e) compressor discharge. unit, one ton of refrigeration is equal to (e) its input only in the form of heating. In vapor compression refrigeration, COP is (Ans: b), As evaporator temperature decreases in vapor compression refrigeration, COP Clapeyron equation is applicable for registration at Highest pressure encountered in a refrigeration system should be MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. (Ans:a), The condenser used in a small cooling capacity plant is, The condenser used in medium cooling capacity plant is, The condenser used in large cooling capacity plant is, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). 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. At unity load power factor, the effect of armature reaction on the main-field flux of an alternator is (a) nominal. (c) Remains the same Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (d) condenser discharge (a) more In which (a) strong solution to weak solution (a) lower than atmospheric pressure Answer: (a) low SHOW ANSWER 26. (a) after passing through the condenser Ans: b Reducing suction pressure in refrigeration cycle (e) dual cycle. Ans: b (c) Not known’ Air refrigeration cycle is used in (1 ton = 211kJ/min of cooling effect). Vapour compression refrigeration is some what like The C.O.P. (b) increases heat transfer rate (d) None The atmospheric greenhouse effect is produced mainly by the: A. Absorption and re … 30. (c) Remains the same (a) increase (e) receiver. (b) low (e) none of the above. (c) strong solution to ammonia vapour (a) is less than 1 Which of the following is not a desirable property of a refrigerant (a) electrically operated throttling valve Electric current is produced B. (d) concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator The cooling of Earth due to air pollution. (b) expansion valve One of the purposes of sub-cooling the liquid refrigerant is to 91. 80. (e) 105 kJ/min. Free PDF Download of CBSE Class 10 Science Chapter 13 Magnetic Effects of Electric Current Multiple Choice Questions with Answers. Learn and practice General Knowledge questions and answers on Environmental Science MCQ with very easy and understandable explanations. (c) lowers compressor capacity because vapour is lighter (c) kVA rating. Ans: c 67. 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 The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. (d) reversed Rankine cycle (e) such a cycle does not exist. (c) freezing automatic regulating valve (b) Reversed Carnot cycle (d) constant entropy lines (Ans: b), As discharge pressure decreases in vapor compression refrigeration, the cooling effect In vapour compression cycle using NH3 as refrigerant, initial charge is filled at 14. (e) none of the above. (b) saturation point of liquid (c) after passing through the expansion or thiottle valve Your name: ... More Mcq. Ans: a Start studying IB Biology Topic 6.3 MCQ's. 3. (d) 75% 51. (d) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (b) axial (a) results in loss of heat due to poor heat transfer (b) manually operated valve (c) 5 (d) any value (b) condenser MCQ on Refrigerator & AC 51-105 51. (d) None (c) enthalpy increase in compressor (b) Increase of pressure In S.J. (a) near critical temperature of refrigerant 31. MCQ quiz on Water multiple choice questions and answers on water MCQ questions quiz on water objectives questions with answer test pdf. Steam-jet water vapor refrigeration is used for creating temperatures (a) Above O o C (b) Below O o C (c) O o C (d) None (Ans: a) Steam vapors follow (a) Perfect gas equation (b) Boyle’s Law (c) Charles Law (d) None (Ans: d) In steam-jet refrigeration, cooling effect is produced by (a) Latent heat (b) Total heat (c) Sensible heat (d) None … 71. (a) Vapor compression cycle (Ans: a), As evaporator pressure decreases in vapor compression refrigeration, COP Ans: b (c) 2-4 bars (e) S02. 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. (c) in 24 hours (a) more (d) low latent heat Ans: e (b) Desire able (b) 50 kcal/kr (e) less for small capacity and more for high capacity. The boiling point of ammonia is (d) 0°C d) The saturation voltage V CE. (d) metering of the refrigerant liquid Ans: e Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. 22. (d) reduces weight displaced by piston (a) of cooling medium (c) 420 kJ/min (b) <1 1 MCQ (nerve and muscles) Choose the best ( √)answer: 1- The energy of muscle contraction is derived from the following except: a- ATP. 58. 57. (b) Increases Aqua ammonia is used as refrigerant in the following type of refrigeration system (b) Vapor compression Cycle 1. (b) T1 – T2 79. (c) evaparator 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. (d) dependent on weather conditions In mottled cast iron, slow cooling rate is used to obtain _____ a. white cast iron b. gray cast iron c. Both a. and b. d. None of the above. 69. Ammonia-absorption refrigeration cycle requires Ans: a Refrigeration; Steam Engine; Steam Boiler; Steam Turbine; Steam Condenser; Steam Nozzle; Power Plant; Thermodynamics; … (a) increase (c) miniature sealed unit « Back CONTENTS Next » 1. (a) Condenser (a) after passing through the condenser (a) vapour compression (c) saturated liquid (d) in 12 hours (1 ton = 211kJ/min of cooling effect). Ans: c (d) None (c) equally. (a) less than 2 kg (b) is more than 1 Ans: a. (b) safety relief valve (a) Tow specific heat of liquid Ans: d Highest temperature encountered in refrigeration cycle should be Short horizontal lines on pressure-enthalpy chart show 19. (e) 100%. b. (e) 5 to 10 h.p. (b) Increases Ans: d (a) will be higher (b) Bell column cycle (d) could be anything 24. Ans: e (c) Remains same (d) None Ans: d (d) low pressure side near receiver 43. c) It has insufficient cooling effect . Refrigeration in aeroplanes usually employs the following refrigerant (a) small (a) 0.2 85. (a) temperature, pressure and enthalpy 42. (e) throttling device. ... B The cooling effect produced by melting 1 ton of ice . (b) it permits complete evaporation in the evaporator (a) high Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. (a) condensation of the refrigerant vapour (b) Expansion valve Ans: a Ans: a 16. Ans: b Ans: d (c) is equal to 1 (Ans: b), With the increase of discharge pressure, the refrigerating effect (c) evaporator 75. 52. 1. (d) before entering the expansion valve (a) heat of compression of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will (Ans:a) (b) 25% (e) none of the above. Ans: a (a) collect liquid refrigerant and prevent it from going to compressor In a filament type light bulb, most of the electric power consumed appears as: ... A. (e) none of the above. c) The saturation voltage V CE for silicon transistor is same as that for germanium. (c) >10 Pick up the wrong statement. (c) Vapor absorption cycle (e) unpredictable. Ans: d D 2 . (Ans:b), To improve the COP of a refrigeration system, the sub-cooling in the condenser should be 81. (d) more or less depending on ambient conditions View Answer Answer: Carry away the heat produced in bearing 36 The most important quality of any lubricant is A Specific heat . Q11. Ans: a (Ans: a), As condenser pressure decreases in vapor compression refrigeration, the cooling effect The Cannot coefficient of performance of cycle will be In Hall effect, the output voltage produced across the crystal is due to A. View EE,UNIT 2,MCQ.xlsx from MECHANICAL ENGR6911 at Sultan Qaboos University. These MCQs includes almost all questions from intext questions and exercises questions. (c) 1 to 2 h.p. (d) unpredictable The CP of … 86. 41. (a) always less than unity (Ans: a), As evaporator pressure decreases in vapor compression refrigeration, the cooling effect (e) none of the above. (c) carnot cycle (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (b) decrease In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is Sub-cooling causes increase in COP of the system. 15. (d) None 3. Ans: e Ans: b (c) Remains same Magnetic effect of current C. Lighting effect of current D. Heating effect of current 39. 1500°C. D. preemphasis . 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 (a) Freon-12 Polarity of (b) 21 kJ/min How do you calculate evaporation loss in cooling tower? (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (b) more than or equal to 3.65 kg (c) much above critical pressure The C.O.P. (e) 1000 kcal/day. Which noise is produced by lighting discharges in thunderstorms? (b) takes place at constant temperature Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas refrigeration. Ans: e In Florey and Chain's experiment, eight mice were infected with lethal doses of Streptococcus bacteria. A refrigerant should have (a) Tow specific heat of liquid ... One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (a) in 1 hour (b) in 1 minute (c) in 24 hours (d) in 12 hours (e) in 10 hours. In motorcycles, the following type of cooling system … View Answer Answer: Danger of corrosion ... D Carry away the heat produced in bearing . (a) high, of the order of 25° 68 Ammonia is (c) constant total heat lines (Ans:a), The Cop of a heat pump is Ans: b Ans: d (e) lithium bromide is driven out of solution. 20. (b) less ... the heating effect will be: A. Ans: d The cooling effect produced by melting 1 ton of ice . Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. The effect of considering friction losses in steam nozzle for the same pressure ratio leads to (a) increase in exit velocity from the nozzle ... Nuclear Power Plant Multiple Choice Questions Multiple Choice Questions Nuclear Power Plant Multiple … 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. The moisture in a refrigerant is removed by (c) Remains same (c) COP remains unaltered (c) equal to atmospheric pressure D.One tonne of ice when melts from at 0 0 C in 24 hours,the refrigeration effect produced is equivalent to 210 kJ/min Your Comments. If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be (d) None A standard ice point temperature corresponds to the temperature of MCQ in Modulation Part 11 as one of the Communications Engineering topic. (d) expansion valve a) Oilcan . (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. (b) Inlet of evaporator Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. The vapour pressure of refrigerant should be (d) absorption (d) None D. The refrigeration effect to produce 1 ton of ice at NTP conditions. NEET MCQ tissue-culture PDF:-Download the PDF Here. EVS MCQ questions are very helpful different type of competitive ex Page-2 section-1. Practice with these objective questions to score more in your terminal exams or unit tests. (b) work done by compressor (c) All solar thermally operated absorption systems are capable only of intermittent operation (a) ammonia vapour goes into solution (a) constant pressure lines (b) low boiling point 70. Ans: d The synchronous generator is found at power stations where it is synchronized with the turbine. (d) triple point (c) indirect (b) Low (c) compression of the refrigerant vapour Following is … (b) Low 60. (c) 0.5 The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (e) non-toxic and non-inflammable. (e) unpredictable. (a) Rankine Subject: Heat Transfer 2. (d) compressor and condenser (e) 10. (a) high sensible heat (e) at which all the three phases exist together. Cooling tower effectiveness in percentage is the ratio of range, to the ideal range, i.e., difference between cooling water inlet temperature and ambient wet bulb temperature or in other words it is = Range / (Range + Approach). Superheating in … (a) saturation point of vapour 77. The evolution of heat of solution takes place in ammonia absorption plant when The bank of tubes at the back of domestic refrigerator are (c) takes place at constant entropy The coefficient of performance is the ratio of the refrigerant effect to the (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);})(); Ans: a (e) none of the above. (e) decreases compressor power. 33. (a) critical pressure of refrigerant Ans: e Magnetic Effect of Electric Current Class 10 MCQ Question 1. 8. Ans: d 525. (e) before entering the compressor. (c) COP remains unaltered (c) Vapor compression cycle Air refrigeration operates on Allowable pressure on high-pressure side or ammonia absorption system is of the order of Ans: c (e) unpredictable. (b) decreases COF Drop across the crystal is due to the current passed through it B. (e) before entering the compressor. One ton of refrigeration is the heat removal at the rate of Pick up the wrong statement. The reason is the hot temperature is TAKEN OUT by low boiling temperature of the refrigerant. The leaks in a refrigeration system using Freon are detected by 78. 2.Which of the following is strongest magnet? (b) Freon-11 In a refrigeration cycle, the flow of refrigerant is controlled by Learn Internal Combustion Engines (I.C. (a) ineffective refrigeration (d) None One ton refrigeratiqn corresponds to 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. Q17. 35. Ans: a Refrigeration is measured in tons of refrigeration. Ans: a (a) 211 kJ/min In figure the process of sub-cooling is shown by 2’-3’. (a) Decreases (d) Air A Synchronous Generator is an AC Generator that converts mechanical energy to AC Electrical Energy. 32. b) Wick feed lubricator . The domestic refrigerator uses following type of compressor (a) 50 kcal/min 1. (b) demagnetizing. (c) Precooling and subcooling bf refrigerant are same (c) temperature and enthalpy (a) Carnot cycle (c) Remains same (e) none of the above. 47. 39. 21. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (c) a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing (a) suction of compressor (e) none of the above. https://www.mesubjects.net/wp-admin/post.php?post=4410&action=edit       Open and Hermetically sealed compressor units, https://www.mesubjects.net/wp-admin/post.php?post=5067&action=edit      Refrigeration equipment-2, https://www.mesubjects.net/wp-admin/post.php?post=5065&action=edit      Refrigeration equipment-1, https://www.mesubjects.net/wp-admin/post.php?post=4194&action=edit       MCQ non-conventional refrigeration. (a)Ferrite (d) Bell-coleman Q7. D None of the above. Free Online MCQ Questions for Class 9 Science with Answers was Prepared Based on Latest Exam Pattern. (a) Temperature of medium being cooled must be below that of the evaporator 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. 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.. (b) before passing through the condenser The vasodilatation produced by carbon dioxide is maximum in one of the following: A. Kidney B. (d) at which refrigerant gas becomes liquid 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. Choose the correct statement Solution: (COP) Heat pump = (COP) refrigerator + 1 = 4 + 1 = 5. Ans: d 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) solid and dry ice Efficiency of a Cornot engine is given as 80%. Ans: d The sum of the rates if water evaporated from the first and second effects is 1 kg/s. (a) decreases (c) above which liquid becomes vapour 54. Since refrigerant is boiled, its form is changing from fluid to vapor (evaporation process). Students can solve NCERT Class 10 Social Science The Making of Global World Multiple Choice Questions with Answers to know their preparation level. One ton of the refrigeration is (d) ammonia vapour to weak solution (e) none of the above. 82. (a) a gas will never liquefy (c) Rankine cycle (c) expansion valve and evaporator The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is (c) is immaterial C Viscosity . 4. Cooling capacity is the cooling produced per minute. (a) lithium bromide used in vapour absorption cycle is nonvolatile (a) T1 + T2 Ans: c (c) non-inflammable and toxic (b) Increases (a) Decrease of pressure (a) same (b) 1.2 The best example for splash lubrication is . (b) sulphur sticks which on detection gives white smoke Ans: e 15. (a) A refrigerant should have low latent heat (d) None c 2- The frequency needed to C. The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours. (b) Decreases Ans: b The arc can be produced by either AC or DC current. Most of the domestic refrigerators work on the following refrigeration system (a) Decreases (a) compressor Because almost all of the heat is produced at the surface, the eddy Ans: a (b) specific volume and enthalpy 56. (b) will be lower In an Internal Combustion engine, about _____ of the latent heat produced during combustion passes through the cylinder wall into the cooling system. (c) Evaporator The heating of a solid, such as a rock. (e) under some conditions small and under some conditions high. Ans: a In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be (d) None Cooling capacity is the cooling produced per minute. (d) toxic (Ans: d), There is change of state of refrigerant is in relation to The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases, The draught produced by steel chimney as compared to that produced by brick chimney for the same height is (a) less (b) more (c) same (d) may be more or less. (b) maximum work input 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. In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid (b) voltage rating. Tags: Question 4 SURVEY 30 seconds Q. 94. C Due to high cooling effect the cutting edges of the tool break off . A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. Ans: c (a) increases COP The higher temperature in vapour compression cycle occurs at (c) Equal to the COP of a refrigerator (b) Decreases (d) highly toxic and inflammable (d) can be avoided by proper design 10%. c. 2700°C. (c) absorber Ans: b (c) Sensible heat (d) None Ans: c (c) Zero (b) Refrigerant leaves the condenser as liquid (Ans: b), With the decrease of suction pressure, refrigeration effect a. In vapour compression cycle, the condition of refrigerant is very wet vapour During combustion in the engine, temperature in the cylinder raises up to. Round the clock cooling of an apartment having a load of 300 MJ/day requires an air-conditioning plant of … (e) Reversed Carnot. (a) Increases Ans: a Ans: a (b) before passing through the condenser Ans: b Brain Vasodilatation effect of CO2 is … (c) cooling below 0°C (d) None (e) none of the above. Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 6 Thermodynamics with Answers Pdf free download. (d) None (b) evaporator tubes The regular electric power supply (hydel power or thermoelectric) uses high voltage and …

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