Voltage and frequency of domestic power supply in India is
A220 kV, 50 Hz
B220 V, 100 Hz
C220 kV, 50 kHz
D220 V, 50 Hz
Answer:
D. 220 V, 50 Hz
Read Explanation:
- Standard Voltage: The nominal RMS (Root Mean Square) voltage for domestic power supply in India is standardized at 230V.
- Standard Frequency: The electrical power grid in India operates at a standard frequency of 50Hz (Hertz).
- Tolerance Levels: As per the Indian Electricity Grid Code (IEGC), the permissible variation for voltage is +/- 5% and for frequency is 49.9Hz to 50.05Hz under normal operating conditions.
- AC Power: Domestic supply is delivered as Alternating Current (AC), which is preferred for long-distance transmission due to the efficiency of transformers in stepping voltage up or down.
- Global Context: While India follows the 230V/50Hz standard, many countries in North America (such as the USA and Canada) utilize 110V-120V at 60Hz, making compatibility an important consideration for electronic device design.
- Regulatory Body: The Central Electricity Authority (CEA) under the Ministry of Power is the statutory body responsible for regulating the technical standards for construction of electrical plants and electric lines in India.