On account of an injection of aggregate demand, the equilibrium level of income

Q. Explain determination of equilibrium level of national income using aggregate demand and aggregate supply approach. Use diagram. Also explain the effect when aggregate demand is less than aggregate supply.

Q. What happens to the level of national income when aggregate demand falls short of aggregate supply?

Q. Explain, with the help of a diagram, how equilibrium level of income is determined considering aggregate demand and aggregate suppl.

Q. Explain how equilibrium level of income can be determined with the help of aggregate demand curve and aggregate supply curve.

Q. Why must aggregate demand be equal to aggregate supply at the equilibrium level of Income and output? Explain with the help of a diagram.