The magnitude of mechanical work is the
Work done by a system is taken to be
Work done on a system is taken to be
The differentials of point functions are
In the equation dV=(1/p)dW, (1/p) is known as
The total internal energy of the system is given by
Which of the following types of energy can be present in molecules?
Which of the following is true in regard to the energy of an isolated system?
A perpetual motion machine of first kind
The limitation of the first law is
According to Kelvin-Planck statement, it is ____ for a heat engine to produce net work in a complete cycle if it exchanges heat only with bodies at ____
A heat engine has to exchange heat with ___ energy reservoir at ___ different temperatures to produce net work in a complete cycle.
The continual operation of a machine that creates its own energy and thus violates the first law is called
If the second law were not true
When we obtain useful work during a process in which a finite system undergoes a change of state, when should that process terminate?
A rigid tank contains 50 kg of saturated liquid water at 90°C. Determine the pressure in the tank and the volume of the tank.
A piston –cylinder device contains 0.06m3 of saturated water vapour at 350 kPa pressure. Determine the temperature and mass of the vapour inside the cylinder.
A rigid tank contains 10 kg of water at 90°C. If 8 kg of the water is in the liquid form and the rest is in the vapour form, determine the pressure in the tank.
An 80 litre vessel contains 4 kg of R-134a at a pressure of 160 kPa. Determine the temperature.
An 80 litre vessel contains 4 kg of R-134a at a pressure of 160 kPa. Determine the volume occupied by the vapour phase.
The second TdS equation is
Which of the following is true?
A power cycle continuously converts ____ into ____
The path followed in a vapour power cycle is
For a vapour power cycle,
