Full name of the author: Er. SAJAL KUMAR GHOSH. Current Affiliation: A.M.I.E, M-Tech (Production Engineering) E-mail ID: skghosh100@gmail.com Teaching/professional Experience: a) Private tutor since 1998 at PUC-2 level (20 Years’ experience). b) Scientific Staff in Nuclear power Plant and Commissioning expert in engineering safety systems. Professional Experience (e.g. Industry, Consultancy) He is working in a Nuclear Power Plant under Govt. PSU of Dept. of Atomic Energy since 2004. He was involved in commissioning of engineering safety features and ventilation systems of 220×2 MWe PHWR Nuclear power plants. Presently associated with Nuclear Power Program of India. He have vast 14 years of experience in commissioning of ventilation and engineering safety features systems in nuclear power plants and testing of related equipments at par with atomic energy regulatory norms. Membership of Associations/Societies: Associate Member of The Institution of Engineers (India), Kolkata. Books Published : Author has published following books: First: Mechanical Engineering MCQ & A for UPSC,GATE,PSC & A.M.I.E. ISBN-13: 978-8193328446 ,Pub: KHANNA PUBLICATION,DELHI Second: A COMPLETE GUIDE TO MCQ (SCIENCE) CLASS 10,ISBN-13: 978-1718736412 Pub: CREATE SPACE (AN AMAZON PUBLICATION COMPANY)