ME Quiz: First Law of Thermodynamics

In a non-flow process, work transfer from the system is 30 kJ and heat received by the system is 90 kJ. Determine the change in the internal energy _________.

______ property is stated by first law of thermodynamics.

Air enters a nozzle with a velocity of 5 m/s and at a temperature of 85°C and 180 kPa pressure. If the exit temperature is 338 K and exit pressure is 105 kPa, find the exit area of nozzle ___________. (Inlet cross section area 0.4 m²)

With respect to the first law of thermodynamics, which of the following statements is the most relevant?

Which of the following statements is correct with reference to perpetual motion machines of the first kind?

Which of the following statements is INCORRECT with reference to the first law of thermodynamics?

Identify the complete and correct statement of the first law of thermodynamics.

What is the drop in enthalpy (in kJ/kg) for a steam whistle which is perfectly insulated and does not work has an exit velocity of steam at 40 m/sec?

Energy of a system is defined as _________.