Each institution has specialized functions: RBI manages currency/banking, SEBI regulates securities, NABARD handles agricultural credit, EXIM Bank facilitates trade.

State GST, land revenue, and excise duty are direct sources of state revenue. RBI policies are monetary instruments, not revenue sources.

World Bank data indicated India's poverty rate declined significantly, reflecting improved living standards and economic growth.

NITI Aayog (established 2015) serves as policy research institution promoting cooperative federalism and sustainable development.

NPCI, a subsidiary of RBI, developed and governs UPI as India's real-time payment system under RBI oversight.

The Finance Commission, constituted every 5 years, recommends tax distribution and grants between Centre and States under Article 280.

The bank provides financial support for agricultural development and rural economic activities in Haryana.

Pre-insertion resistors and reactors limit the inrush current and transient overvoltages when capacitor banks are switched, ensuring smooth energization.

STATCOM uses power electronics to inject/absorb reactive power independently from active power, providing fast voltage support and damping of oscillations.

Open/Closed Principle states that classes should be open for extension (SavingsAccount, CurrentAccount extend Account) but closed for modification (Account class rules remain unchanged). This is a classic example of OCP.