Energy Equation-3 MCQ

Test your knowledge with important Energy Equation-3 MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Energy Equation-3 MCQs at Bissoy

• A piston cylinder contains 3kg of air at 20°C and 300 kPa. It is now heated up in a constant pressure process to 600 K. Find the heat transfer.
  ক

  941 kJ

  খ

  951 kJ

  গ

  961 kJ

  ঘ

  971 kJ
• A rigid container has 2kg of carbon dioxide gas at 1200 K, 100 kPa that is heated to 1400 K. Find the heat transfer using heat capacity.
  ক

  231.2 kJ

  খ

  241.2 kJ

  গ

  251.2 kJ

  ঘ

  261.2 kJ
• A 250L rigid tank contains methane at 1500 kPa, 500 K. It is now cooled down to 300K. Find the heat transfer.
  ক

  –402.4 kJ

  খ

  –502.4 kJ

  গ

  –602.4 kJ

  ঘ

  –702.4 kJ
• A vertical cylinder fitted with a piston contains 5 kg of R-22 at 10°C. Heat is transferred causing the piston to rise until the volume has doubled. Additional heat is transferred until the temperature inside reaches 50°C, at which point the pressure inside the cylinder is 1.3 MPa. Find the work done.
  ক

  34.1 kJ

  খ

  44.1 kJ

  গ

  54.1 kJ

  ঘ

  64.1 kJ
• 10kg of water in a piston-cylinder exists as saturated liquid/vapour at 100 kPa, with a quality of 50%. It is now heated till the volume triples. The mass of piston is such that a cylinder pressure of 200 kPa will float it. Find the heat transfer in the process.
  ক

  23961 kJ

  খ

  24961 kJ

  গ

  25961 kJ

  ঘ

  26961 kJ
• A steam turbine has an inlet of 2 kg/s water at 1000 kPa, 350°C and velocity of 15 m/s. The exit is at 100 kPa, x = 1 and very low velocity. Find the power produced.
  ক

  664.6 kW

  খ

  764.6 kW

  গ

  864.6 kW

  ঘ

  964.6 kW
• A steam turbine has an inlet of 2 kg/s water at 1000 kPa, 350°C and velocity of 15 m/s. The exit is at 100 kPa, x = 1 and very low velocity. Find the specific work.
  ক

  382.3 kJ/kg

  খ

  482.3 kJ/kg

  গ

  582.3 kJ/kg

  ঘ

  682.3 kJ/kg
• Nitrogen gas flows into a convergent nozzle at 200 kPa, 400 K and very low velocity. It flows out of the nozzle at 100 kPa, 330 K. If the nozzle is insulated find the exit velocity.
  ক

  681.94 m/s

  খ

  581.94 m/s

  গ

  481.94 m/s

  ঘ

  none of the mentioned
• Air at 600 K flows with 3 kg/s into a heat exchanger and out at 100°C. How much (kg/s) water coming in at 100 kPa, 20°C can the air heat to the boiling point?
  ক

  0.37 kg/s

  খ

  0.17 kg/s

  গ

  0.27 kg/s

  ঘ

  0.57 kg/s
• Superheated R-134a at 0.5 MPa, 20°C is cooled in a piston-cylinder at constant temperature to a final two-phase state with quality of 50%. The refrigerant mass is 5 kg, and during the process 500 kJ of heat is removed. Find the necessary work.
  ক

  -67.9 kJ

  খ

  -77.9 kJ

  গ

  -87.9 kJ

  ঘ

  -97.9 kJ