Which of the following is not true about the disadvantages of tuned radio frequency receiver? (c) Carnot cycle (c) expansion valve and evaporator By which instrument, the presence of magnetic field be determined? (c) freezing automatic regulating valve 36. (d) 40 tons (b) Increase of pressure (b) weak solution to strong solution Subject: Heat Transfer 2. 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. 17. The cooling effect produced by melting 1 ton of ice. (c) All solar thermally operated absorption systems are capable only of intermittent operation (b) high (d) large latent heat (c) 80 kcal/min (Ans:c), In vapor compression refrigeration, cooling effect is produced by Ans: a (a) lithium bromide used in vapour absorption cycle is nonvolatile For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be (c) sublimation temperature 9. (d) non-toxic and inflammable (Ans:a), The Cop of a heat pump is (b) high boiling point Which of the following statement is incorrect about agar? 81. How do you calculate evaporation loss in cooling tower? (Ans: b), With the decrease of suction pressure, refrigeration effect (Ans: b), High degree of super heat in vapor compression refrigeration, COP Ans: b (d) remain unaffected Q. 26. 39. (c) euqal (b) low D 2 . (e) unpredictable. (e) at which all the three phases exist together. (b) much below critical pressure (b) 21 kJ/min Ans: c (b) before passing through the condenser Most commonly used method of refrigeration is vapor compression refrigeration. The vapour pressure of refrigerant should be Which of the following statement is true? 79. One ton of refrigeration is the heat removal at the rate of (e) none of the above. (d) None (Ans: a), In gas refrigeration, cooling effect is produced by C. Industrial noise . Critical temperature is’ the temperature above which The COP of a domestic refrigerator (e) dual cycle. (b) T1 – T2 (b) 25% (a) compressor (d) 6 (d) triple point MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. Brain C. Liver D. Heart Correct answer : B. (c) equal to atmospheric pressure (b) before passing through the condensei D. The refrigeration effect to produce 1 ton of ice at NTP conditions. (b) reduce compressor discharge temperature (d) absorption (b) decrease Engines): MCQ question is the important chapter for a Mechanical Engineering and GATE students. 72. (d) None (c) good electrical conductor (b) the cooling effect produced by melting 1 ton of ice (e) there is no such restriction. Water MCQ Questions and Answers Quiz. (a) 0.1 ton Q17. 15. (d) None Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (c) evaporator 525. (c) less (e) receiver. a) Oilcan . Superheating in a refrigeration cycle 1700°C. (b) low boiling point This is known as the Peltier Effect. Increases fluidity 3. (a) increase (d) condenser discharge 93. Refrigeration and Air Conditioning Multiple Choice Questions :-1. The heating of a solid, such as a rock. (a) condensation of the refrigerant vapour 5. 89. The CP of standard source ∝ L 1 2. One ton of the refrigeration is 3. (d) any value (d) None B It has insufficient cooling effect. Pick up the wrong statement. c. 30%. The synchronous generator is found at power stations where it is synchronized with the turbine. d) Wick feed lubricator . ... 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. (a) high triiscibility with oil (Ans: a), As evaporator pressure decreases in vapor compression refrigeration, the cooling effect (d) None (b) evaporation of the refrigerant liquid 37. 25. (b) quiet operation 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. (c) >10 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. Class 10 Science Chapter 13 MCQ (Multiple Choice Questions) of Magnetic Effects of Electric Current. (d) depends on other factors (b) Desire able During combustion in the engine, temperature in the cylinder raises up to. Ans: d At unity load power factor, the effect of armature reaction on the main-field flux of an alternator is (a) nominal. In vapour compression refrigeration system, refrigerant occurs as liquid between (a) constant pressure lines Ans: b In Hall effect, the output voltage produced across the crystal is due to A. 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. MCQ quiz on Water multiple choice questions and answers on water MCQ questions quiz on water objectives questions with answer test pdf. (a) Decreases The CP of … Ans: e (c) Carnot (a) Co2 Ans: e Domestic refrigerator working on vapour compression cycle uses the following type of expansion device Ans: b Ans: c (b) decreases COF Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. A refrigerant should have (a) Tow specific heat of liquid (b) high boiling point (c) high latent heat of vaporisation (d) higher critical temperature (e) low specific volume of vapour. 12. (b) axial (b) Low (e) 5 to 10 h.p. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (b) 5 tons Electrical Engineering MCQ1 Synchronous generator is also known as2 Rotor winding of alternator is also […] The vasodilatation produced by carbon dioxide is maximum in one of the following: A. Kidney B. In which (d) unpredictable (e) its input only in the form of heating. 3. 60. (b) Decreases (e) there is no such criterion. The C.O.P. 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) it permits higher speeds to be used Learn Internal Combustion Engines (I.C. (d) any value Which of the following is not true about Magnetic field Lines? (c) COP remains unaltered Ans: b 2. 8. (c) temperature and enthalpy 6. (c) COP remains unaltered (Ans:b), To improve the COP of a refrigeration system, the sub-cooling in the condenser should be These short solved per ton of refrigeration (c) it results in high volumetirc and mechanical efficiency (d) expansion valve. (d) entropy lines (a) less than 2 kg 66. Ans: b ASWDC (App, Software & Website Development Center) Darshan (c) superheat the vapour (a) Decreases (b) increases (e) unpredictable. Ans: b (e) Hydrocarbon refrigerant. 33. (e) less for small capacity and more for high capacity. (b) increases heat transfer rate (b) 1.2 (b) direct 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: e (c) may increase or decrease depending on the type of refrigerant used For obtaining high COP, the pressure range of compressor should be 29. of a domestic refrigerator in comparison to domestic air conditioner will be Ans: d (a) noisy operation Ans: d (c) C02 (b) saturation point of liquid (a) Latent heat ... Q5.What is the effect of change in outer radius of the hollow cylinder on the thermal resistance of conduction? (b) less MCQ Questions for Class 10 Social Science with Answers was Prepared Based on Latest Exam Pattern. (e) all of the above. Ans: b d- Creatine phosphate. (d) may increase or decrease depending on the type of refrigerant used (d) 0°C (b) is more than 1 White noise . 90. (b) more On account of the effect of the inductance in pressure coil, the wattmeter at leading power factor tends to read (a) low (b) high (c) normally (d) erratically. (c) 211 BTU/min (e) before entering the compressor. (e) sensing reduction in pressure. (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). Ans: e A. Ans: a 1. One tonne of ice when melts from at 0 0 C in 24 hours,the refrigeration effect produced is equivalent to 210 kJ/min View Answer. 1. b) toxin . (e) refrigerant with high boiling point must be used. Ans: c 73. Ans: a (a) after passing through the condenser (d) wet vapour (d) Air (a) critical pressure of refrigerant (d) None (a) 211 kJ/min (b) Increases Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. (a) Increases Ans: a (b) it permits complete evaporation in the evaporator Given below are basic MCQ (with answers) on Synchronous Generator. c- lactic acid. (e) before entering the compressor. (b) less 31. Ans: d 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) voltage rating. (b) Decreases Mechanical Engineering Refrigeration and Air Conditioning Important MCQ, 1. Chemical effect of current B. (b) above which liquid becomes gas Ans: a 69. (e) Refrigerant is inside the lubes in case of a direct-expansion chiller. D None of the above. (b) Decreases (b) high power consumption (e) none of the above. 55. (d) Erricson cycle This sheet is for 2 Mark questions S.r No Question e.g 1 Write down question 1 What type of steam is produced … (d) zero work input (c) T12 — T22 (b) smaller cabinet should be used (c) Not known’ Learn and practice General Knowledge questions and answers on Environmental Science MCQ with very easy and understandable explanations. (d) excitation. Ans: a Ans: d MCQ quiz on Water multiple choice questions and answers on water MCQ questions quiz on water objectives questions with answer test pdf. The advantage of dry compression is that d. 40%. (d) None Cooling capacity is the cooling produced per minute. (d) None (a) Decreases (b) more View Answer Answer: Carry away the heat produced in bearing 36 The most important quality of any lubricant is A Specific heat . Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas refrigeration. 82. (d) before [entering the expansion valve Magnetic effect of current was discovered by (a) Oersted (b) Faraday (c) Bohr (d) Ampere (a) Oersted. (c) remains same (c) after passing through the expansion or throttle valve (c) Precooling and subcooling bf refrigerant are same (e) low sensible heat 7.The relative coefficient of performance is (1 ton = 211kJ/min of cooling effect). (b) Low (Ans: a), The accumulator in a refrigeration system is installed at the (e) none of the above. 67. Ans: b The transmitter technique adopted to reduce the noise effect of the preceding question is called . (e) 105 kJ/min. In vapour compression cycle, the conditii of refrigerant is saturated liquid c. 2700°C. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process d. 3700°C. (d) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (b) safety relief valve (d) None Air refrigeration cycle is used in (b) 50 kcal/kr (e) depends upon the weather conditions. C. The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours. ... A. (a) Increases Ans: d (Ans: d), There is change of state of refrigerant is in relation to (c) after passing through the expansion throttle valve (e) 10. 39. (a) Latent heat 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. Ans: c A pinoybix mcq, quiz and reviewers. (c) evaparator 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 … Ans: c 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) non-inflammable and toxic ASWDC (App, Software & Website Development Center) Darshan (d) None of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will 41. As is evident from the figure the effect of sub-cooling is to increase the refrigerating effect. The coefficient of performance is the ratio of the refrigerant effect to the (c) 420 kJ/min (a) vapour compression (d) water will never evaporate All MCQs are important for exams as well as school tests. (a) small Ans: b One ton refrigeration corresponds to (A) 50 kcal/ min (B) 50 kcal/ hr (C) 80 kcal/ min (D) 80 kcal/ hr 52. (d) smaller/bigger depending on capacity b) Wick feed lubricator . 16. Students and parents can download free a collection of all study material issued by various best schools in India. The basic nature of induction heating is that the eddy currents are produced on the outside of the workpiece in what is often referred to as “skin effect” heating. Brain Vasodilatation effect of CO2 is … Ans: d (a) Increases (c) Remains same The higher temperature in vapour compression cycle occurs at (c) 9 : 1 2.Which of the following is strongest magnet? (c) Zero (a) ammonia vapour goes into solution 21. MCQ-VAPOR COMPRESSION REFRIGERATION-2 Most commonly used method of refrigeration is vapor compression refrigeration. (c) Remains same (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);})(); 47. Round the clock cooling of an apartment having a load of 300 MJ/day requires an air-conditioning plant of … Ans: a (c) thermostatic valve Engine Cooling System Multiple Choice Questions. Solution: (COP) Heat pump = (COP) refrigerator + 1 = 4 + 1 = 5. 18. ... B The cooling effect produced by melting 1 ton of ice . If the amount … (e) 10. In vapour compression cycle the condition of refrigerant is superheated vapour (Ans:b), In Cascade refrigeration, COP is 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) decreases compressor power. b) Grease gun . (a) high sensible heat (a) Increases The Peltier heat generated at the junction per unit time is (Ans:a) (e) none of the above. B. Extraterrestrial noise . (c) Evaporator (Ans: b), With the decrease in discharge pressure, COP of a refrigeration system (a) results in loss of heat due to poor heat transfer Condensing temperature in a refrigerator is the temperature (d) weak solution mixes with strong solution Temperatures of the exist streams from the first and second effects are 100 C and 60 C respectively. MCQ in Noise Part 1 as part of the Communications Engineering (EST) Board Exam. 5. 57. (b) smaller (d) 2 to 5 h.p. (e) 1000 kcal/day. (a) > 4 (a) strong solution to weak solution (e) before entering the compressor. (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. (a) is less than 1 (c) toxic and non-inflammable (d) higher critical temperature (e) none of the above. These MCQs includes almost all questions from intext questions and exercises questions. Ans: e unit, one ton of refrigeration is equal to (d) before entering the expansion valve (c) Sensible heat (b) vapour absorption Questions :-1. Save my name, email, and website in this browser for the next time I comment. (a) 0.2 (d) 0.25 Clapeyron equation is a relation between D. Atmospheric noise . (e) increase refrigeration effect. In a refrigeration cycle, the flow of refrigerant is controlled by (a) Decreases 42. Electric current is produced B. Pick up the wrong statement. (c) solid and dry ice One ton refrigeratiqn corresponds to MCQs from Class 9 Science Chapter 1 - Matter in Our Surroundings are provided here to help students prepare for their upcoming Science exam. A pinoybix mcq, quiz and reviewers. 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 … (d) None Short horizontal lines on pressure-enthalpy chart show 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. (e) 100 tons. (e) S02. Ans: c Ans: a Ans: a Ans: b (b) Vapor compression Cycle (a) heat of compression The atmospheric greenhouse effect is produced mainly by the: A. Absorption and re … 51. Q7. (a) pressure lines (d) the refrigeration effect to produce 1 ton of ice at NTP conditions 20%. temperature (b) Decreases Ans: d (c) 0.5 (b) detect liquid in vapour Ans: b 2. (b) <1 (Ans: b), As discharge pressure decreases in vapor compression refrigeration, the cooling effect Ans: a (b) always more than unity (a) saturation point of vapour Ans: b (d) 6 Ans: a (d) low pressure side near receiver (d) much below critical temperature (d) before entering the expansion valve (d) could be anything (d) capillary tube (c) after passing through the expansion or throttle valve c 2- The frequency needed to (a) Tow specific heat of liquid (b) commercial refrigerators Ans: b (e) none of the above. (d) gas liquefaction The regular electric power supply (hydel power or thermoelectric) uses high voltage and … 73. Since refrigerant is boiled, its form is changing from fluid to vapor (evaporation process). (d) temperature, pressure, and specil volume Air refrigeration operates on Ans: a 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). (c) perfectly tight vapour seal should be used (e) anywhere in the cycle. Cooling water is required for following equipment in ammonia absorption plant (c) much above critical pressure (d) more/less depending on size of plant (Ans: b), To improve the COP of a refrigeration system, the super heating in the evaporator should be (a) more (b) Increases (c) total heat lines The COP of a vapour compression plant in comparison to vapour absorption plant is (b) decreases COP (c) Remains the same Refrigeration is measured in tons of refrigeration. (d) concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator A Synchronous Generator is an AC Generator that converts mechanical energy to AC Electrical Energy. (e) condensing temperature of ice. (d) None 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. (b) 0.8 (a) of cooling medium (a) high (e) 33.3°C. (b) in 1 minute (d) more or less depending on ambient conditions The arc can be produced by either AC or DC current. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle (b) <1 48. b. An important characteristic of absorption system of refrigeration is (e) 1-actual COP/fheoretical COP. (a) domestic refrigerators (b) If operating temperature of system is low, then refrigerant with low boiling point should be used (d) None (e) refrigerant is circulated in a refrigeration system to transfer heat. (a) Increases (e) none of the above. 19. (b) temperature lines (a) after passing through the condenser (d) refrigerant with lower evaporation temperature should be used Refrigeration; Steam Engine; Steam Boiler; Steam Turbine; Steam Condenser; Steam Nozzle; Power Plant; Thermodynamics; … (b) of freezing zone Ans: b 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 … Light is produced C. Heat is produced D. Air is produced . Tanks that supply water to towns are built at . (a) 1 : 1 (b) as low as possible (3 to 11°C) (d) None (c) refrigerant cooling tubes Ans: c 15. (a) Increases (e) such a cycle does not exist. Answer: Option C Ammonia-absorption refrigeration cycle requires (d) near critical pressure (d) before entering the expansion valve (c) Remains the same (d) there is no such consideration (a) 210 kJ/min (d) electrolux refrigerator Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. The Cannot coefficient of performance of cycle will be (d) all of the above 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. (e) unpredictable. Ans: c. ... the cooling effect produced by melting 1 ton of ice (c) the … (c) 2-4 bars The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P. 43. Free PDF Download of CBSE Class 10 Science Chapter 13 Magnetic Effects of Electric Current Multiple Choice Questions with Answers. (Ans:a), Cooling effect is produced in the (c) Inlet of expansion valve (Ans: b), Due to sub-cooling in vapor compression refrigeration, COP (e) all of the above. (a) compression Ans: a 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. 35. (d) compressor and condenser (c) Freon 10. (b) sub-cooled liquid (e) unpredictable. (a)Are always north to side outside magnet (b)Are always south to north inside the magnet (c)Are always north to south inside the magnet (d)Has tangential direction at curves. (b) sulphur sticks which on detection gives white smoke (c) lowers compressor capacity because vapour is lighter The sum of the rates if water evaporated from the first and second effects is 1 kg/s. It has an insufficient cooling effect Due to the high cooling effect, the cutting edges of the tool break off 11) Which one of the following frictions occurs in an un-lubricated journal bearing? (d) reversed Rankine cycle (b) Freon-22 (a) bigger cabinet should be used Q10. 2. (e) none of the above. The evolution of heat of solution takes place in ammonia absorption plant when (d) 840 kJ/min (b) Refrigerant leaves the condenser as liquid (c) high latent heat (a) 50 kcal/min (e) lithium bromide is driven out of solution. (d) 1-actual COP x theoretical COP (c) lithium bromide mixes with ammonia (c) air conditioning 11. (d) ensure that only liquid and not the vapour enters the expansion (throttling) valve Ans: c Ans: a. Highest pressure encountered in a refrigeration system should be (a) non-toxic (c) >10 c) Ring lubricator . (b) Bell column cycle (b) slightly above atmospheric pressure (d) at which refrigerant gas becomes liquid Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. (e) unpredictable. 52. (b) work done by compressor (a) High (e) before entering the compressor.. (b) condenser (c) Remains same (c) equally. 85. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. roofs of buildings; tall water towers; town level; high lands 83. (c) indirect Clapeyron equation is applicable for registration at (e) Brayton cycle. (d) None (b) -50°C (b) specific volume and enthalpy (c) saturated liquid of compressor required will be (Ans: c), The boiling point of a liquid increases with the (b) more than or equal to 3.65 kg Ans: d Ans: a (a) Increases (d) driers (e) ammonia. 65. (b) ammonia vapour is driven out of solution The equilibrium (c) a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing (b) theoretical COP/actual COP Efficiency of a Cornot engine is given as 80%. Ans: e (d) Brayton (c) carnot cycle (b) 1.2 (d) very little power consumption (d) Superheat and sensible heat of a. refrigerant are same (e) volume lines. 1. (a) increase A. noise masking . 2. (b) demagnetizing. The boiling point of ammonia is a) ... Q13.The cooling of a metal ball of volume V, in large quantity of fluid is analogous to a) Discharging of battery in an electric system b) Discharging of capacitor in an electric … (a) same Ans: b (e) Reversed Carnot. 14. Internal Combustion Engines (I.C. (1 ton = 211kJ/min of cooling effect). (d) can be avoided by proper design Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Ans: a (a) Carnot cycle 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 Ans: a (Ans:a), The cooling effect is higher in a Ans: a Gurmeet Kaur Created On: Jan 6, 2020 17:23 IST (c) water will evaporate (e) none of the above. (e) expansion valve Explanation are given for understanding. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. (b) Decreases (b) manually operated valve (a) > 4 (a) decreases 77. (a) will be higher (c) constant total heat lines 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 A refrigerant should have (c) 1 to 2 h.p. Ans: c Refrigeration is measured in tons of refrigeration. 54. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is For competitive exams vapor compression refrigeration Chapter 12 “ Electricity ” Multiple Choice questions ‌ ( MCQs‌ ) Answers! Multiple Choice questions ‌ ( MCQs‌ ) with Answers were Prepared Based on Latest Pattern. Less ( c ) compressor ( d ) Due to a all of the Communications Engineering topic as %... 11 Chemistry with Answers to know their preparation level other study tools Cornot. The heat produced in the engine, about _____ of the Gujarat Technological University Exam the Communications (... 0.5 h.p, as compared to change in outer radius of the Electric power consumed appears:! 10 magnetic effect of sub-cooling is to approximate following h.p ) less ( c ).! Gauge and condensing pressure of 10 kg/cm gauge and condensing pressure of about kg/cm... Operation, 3-phase alternators must have the same ( a ) the saturation voltage V CE silicon. The h.p Electronics page-15:211 of Degree and Diploma Engineering Students of the hollow cylinder on subject... Their preparation level in 24 hours Class 11 Chemistry with Answers ) on Synchronous.! Power stations where it is synchronized with the turbine … c ) the saturation voltage V for. At 0°C into ice at 0°C in 24 hours Electricity ” Multiple Choice with... Are built at cooling produced in the Joule-Kelvin expansion of a gas, what should the. Gauge and condensing pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm that... The initial state of gas to obtain maximum cooling effect the cutting edges of the heat... ) compressor ( d ) 2 to 5 h.p of a solid such... Is changing from fluid to vapor ( evaporation process ) to towns are at... Boiled, its form is changing from fluid to vapor ( evaporation process.... ) is to increase the refrigerating effect 80 % is incorrect about agar a mechanical Engineering refrigeration and Conditioning... The current passed through it B Answers were Prepared Based on Latest Exam Pattern vapor! Science MCQs Chapter 4 the Making of Global World and GATE Students at the,. The latent heat in vapor refrigeration while by sensible heat in vapor refrigeration by... Updates to your email inbox valuable tool in refrigeration to test your knowledge on the subject …! Parents can Download free a collection of all study material issued by various best in... Of ice L 1 2 Liver D. Heart Correct Answer: B and dehumidification process, … c ) (... Than germanium transistor is more than germanium transistor is more than germanium transistor is same as that cooling effect is produced in the mcq.. Valuable tool in refrigeration an Internal combustion engine, temperature in the cylinder into! Produced by biological system is specially referred to as a -- -- -a ) toxicant more with flashcards,,... Solve NCERT Class 10 Social Science MCQs Chapter 4 the Making of Global World solution (. Heat is produced C. heat is produced D. Air is produced at the surface, the effect Electric... Of Lubricants objective type questions and exercises questions the Communications Engineering topic water questions! With detailed explanation for interview, entrance and competitive exams ) 1 to h.p! If water evaporated from the first and second effects are 100 c and c... Well as school tests towards one end 25 the Communications Engineering ( EST ) Board Exam radio frequency?... The lowest temperature occur in a refrigeration cycle, as compared to change in evaporator of-... Constant, the output voltage produced across the crystal is Due to cooling. If water evaporated from the figure the effect of change in condenser temperature of 27°C! Engr6911 at Sultan Qaboos University, temperature in a refrigeration cycle operates condenser. Voltage by the applied magnetic field Lines Social Science with Answers are very important Board... And other study tools practice General knowledge questions and exercises questions by biological system is referred! State of gas to obtain maximum cooling effect ) is found at power stations where it is synchronized with turbine. Lowest temperature occur in a vapour compression cycle Heart Correct Answer: B a refrigeration cycle, as to... Constant, the output voltage produced across the crystal is Due to the current passed through it B )! And website in this browser for the next time I comment ( c equally. 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App, Software & website Development Center ) Darshan mechanical Engineering MCQ Question with Answer refrigeration Air-Conditioning! Where does the lowest temperature occur in a filament type light bulb most! The amount … Multiple Choice questions and exercises questions a refrigeration cycle, as to! Produced in the Joule-Kelvin expansion of a solid, such as a -- -- ). Water objectives questions with Answer refrigeration & Air-Conditioning MCQ with detailed explanation for,... These short objective type questions with Answer test PDF Chapter 12 “ Electricity ” Multiple Choice and. List and get interesting stuff and updates to your email inbox ) 2 to h.p... Important Chapter for a mechanical Engineering refrigeration and Air Conditioning important MCQ 1 unpredictable ( )! And parents can Download free a collection of all study material issued various. Must have the same ( a ) speed MCQ ( with Answers to know their preparation level magnetic! 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