All 7:19 am Tue 28 Dec* 25% IT+ : 0Question 1 Choose the correct option. [0.2 Marks each]1. The first law of thermodynamics discussesThermal equilibriumb. Energy conservationDirection of heat flowа.с.d. Entropy is zero at absolute zero temperatureA tank contains 1 kg mass gas whose density is 700 kg/m³. The pressure is increased from1 bar to 3 bar. The approximate specific boundary work of the system is2.Cannot be find since some data is missingа.b. 285 kJ/kgс.0 kJ/kgd. 0.285 kJ/kg3. The nozzle is a device in whichа.Area decreasesb.Area increasesVelocity decreasesd. Velocity increasesс.4. Choose the correct statement/s with respect to entropy change during a processEntropy increases with increase in pressure at constant temperatureb. Entropy increases with increase in temperature at constant pressureEntropy can be kept constant by systematically increase both pressure and temperatured. Entropy can not be changedа.с.5. The isentropic process is also called asAdiabatic processb. Irreversible adiabatic processReversible adiabatic processd. Reversible isochoric processа.с.Question 2 [1 Mark]Draw Pv and Ts diagram of reversible isobaric process. Write the relationship betweenthermodynamic properties.Question 3 [1 Mark]Refrigerant R-134a at 500 kPa and 120+last two digits enters an adiabatic nozzle steadilywith a velocity of 15 cm/s and leaves at 200 kPa and 20 °C. Determine:a) The exit velocityb) The inlet to exit area ratioc) The inlet exit density ratioQuestion 4 [1 Mark]

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Answered: The first law of thermodynamics…

The first law of thermodynamics discusses a. Thermal equilibrium b. Energy conservation Direction of heat flow с. d. Entropy is zero at absolute zero temperature

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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