At which of the following places Diesel Component Works is established?

The correct answer is: C. Perambur

Diesel Component Works (DCW) is a unit of Bharat Heavy Electricals Limited (BHEL) located in Perambur, Chennai, India. It was established in 1961 to manufacture diesel engines and components for locomotives, ships, and other applications. DCW has a capacity to manufacture 1,000 diesel engines per year.

The other options are incorrect because:

• Jamshedpur is a city in Jharkhand, India. It is the headquarters of East Singhbhum district and the Steel Authority of India Limited (SAIL).
• Patiala is a city in Punjab, India. It is the headquarters of Patiala district and the Patiala Urban Agglomeration.
• Varanasi is a city in Uttar Pradesh, India. It is the cultural capital of India and the seat of the Kashi Vidyapeeth.