a). To eliminate a recessionary gap a central bank would need to
introduce an expansionary monetary policy. An expansionary monetary
policy includes ,
- Purchasing of government owned securities- The purchase of
government owned securities by the central bank would add more
money supply into the economy and there by decrease the interest
rate, this inturn induce the aggregate demand. As the aggregate
demand increases the real GDP will increase and this helps to
eliminate the recessionary gap.
- Decrease in the discount rate - The discount rate is the rate
at which the central lends to the commercial banks , a decrease in
the discount rate makes the borrowing more cheap for the commercial
banks so they would increase their lending and this would induce
the investment spending. Since the investment spending is a
component of the aggregate demand , the aggregate demand would
increase so the real GDP.
- Decrease in the reserve ratio- The commercial banks are
required to keep a certain percentage of their deposits as reserves
with the central bank so a decrease in the reserve ration would
increase the excess reserves held by the commercial banks. The
increase in the excess reserves would lead to an increase in the
lending so the investment spending and the aggregate demand would
increase.
b).
Initially the economy were at the point A with the recessionary
gap and with the expansionary monetary policy the government would
be able to increase the aggregate demand , so the aggregate demand
curve shifts right and closes the recessionary gap. The inflation
and the real GDP will increase and the unemployment decreases.