Section 197 of IPC: Kya hai iski actual use?

Main hamesha confusion mehsoos karta hoon, CPC main Judicial Services ke exams ke liye Section 197 of IPC ki actual use kya hai? Toh iska explanation nahi mil raha, toh bas yeh sawal puch raha hoon.

Mujhe pata hai ki Section 197 of IPC main 'Hutatma' (Self-defence) ke baare mein baata hai, lekin Judicial Services ke exams main iski actual use kya hai? Kya hamesha correct answer dene ke liye hi hum ye section remember karna chahte hain? Aur kya yeh section hamare Judicial exams ke liye real-time use karna sakte hain ya nahin? Kuch example deke please batain, toh main samjh sakoon.