Effective time management strategies during UPSC exams include extensive practice, prioritizing questions, and mastering the art of answering precisely. Candidates should practice mock tests to become familiar with the exam's time constraints. Learning time allocation per question based on difficulty and marking can enhance performance. Keeping a calm demeanor and avoiding time-consuming questions initially allows candidates to secure marks through easier ones. It is essential to maintain a balance between speed and accuracy, ensuring that time is wisely spent to maximize output in both prelims and mains.