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What is the value of C.O.P. of low-temperature cascade system in terms of intermediate temperature in the following diagram? If TEL and TCL = Evaporator and condenser temperatures for low-temperature cascade system TEH and TCH = Evaporator and condenser temperatures for high-temperature cascade system
What is the value of C.O.P. of high-temperature cascade system in terms of intermediate temperature in the following diagram? If TEL and TCL = Evaporator and condenser temperatures for low-temperature cascade system TEH and TCH = Evaporator and condenser temperatures for high-temperature cascade system
Study the following table and answer the question: Number of student Appeared (A) and Passed (P) in an annual examination from schools Q, R, S & T in five years (2014 to 2018)   Year Schools Q R S T A P A P A P A P 2014 320 240 400 340 420 273 250 225 2015 400 320 380 285 350 280 300 228 2016 440 286 360 288 330 264 320 256 2017 350 252 420 294 380 247 350 315 2018 375 320 450 405 400 344 375 300 The total number of students passed from school Q in 2014 and 2018 is what percent less than the total number of students appeared from school R and S in 2017?
Study the following table and answer the question: Number of students Appeared (A) and Passed (P) in an annual examination from four schools Q, R. S & T in five years (2014 to 2018)   Year Schools Q R S T A P A P A P A P 2014 320 240 400 340 420 273 250 225 2015 400 320 380 285 350 280 300 228 2016 440 286 360 288 330 264 320 256 2017 350 252 420 294 380 247 350 315 2018 375 320 450 405 400 344 375 300 The total number of students passed from school S in 2014 and 2017 is what percent of 90% of the total number of students appeared from school T in 2015, 2016 and 2017? (correct to one decimal place)
In vapour compression refrigeration system, if the evaporator temperature and the condenser temperatures are -13°C and 37°C respetively, the Carnot COP will be
What is the ratio of the mass of refrigerant flowing through condenser and mass of refrigerant flowing through the evaporator, i.e., m2 / m1? If m1 = mass of refrigerant passing through the evaporator m2 = mass of refrigerant passing through the condenser
If the compound vapour compression system is working under the load on the evaporator of 15 TR, the enthalpies corresponding to the evaporator are 1400 and 400 kJ/kg respectively. What is the value of the mass flow rate through the evaporator?
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
The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is
Out of 150 pilots who can fly either Airbus 310 or Airbus 320, 75% can fly Airbus 310 and out of total pilots who can fly Airbus 310, 20% can also fly Airbus 320, then how many pilots can fly Airbus 320?