The examples of monetary policy are reducing the reserve ratio, purchasing government securities, and decreasing the discount rate.You can read about The Reserve Bank of India: Functions and Composition in the given link.

In India, the monetary policy is controlled by the Reserve Bank of India. They use various instruments to control monetary policy.

Further readings:

1. Non Performing Assets (NPA) – Facts for UPSC GS-III
2. Monetary Policy – Objectives, Roles and Instruments