यदि स्प्रिंग-नियंत्रित नियंत्रक का नियंत्रण बल समीकरण F = p . r + q द्वारा दिया जाता है (जहाँ r नियंत्रक गेंदों के घूर्णन की त्रिज्या है), तो नियंत्रक है:

-> HPCL Engineer 2025 notification has been released on June 1, 2025.

-> A total of 175 vacancies have been announced for the HPCL Engineer post in Civil, Electrical, Mechanical, Chemical engineering.

-> HPCL Engineer Online application will be activated from 1st June 2025 to 30th June 2025.

-> Candidates with a full-time engineering discipline in the relevant stream are eligible to apply.

-> The selection will be based on a Computer Based Test Group Task and/or Interview. Prepare for the exam using HPCL Engineer Previous Year Papers.