GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Name:Nanomagnetism and NanoFluids
Time:10:30 AM TO 01:00 PM Total Marks: 70
3. Figures to the right indicate full marks.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI(NEW) — EXAMINATION - SUMMER 2019
--- Content provided by FirstRanker.com ---
Subject Code:2163906 Date:27/05/2019Subject Name:Nanomagnetism and NanoFluids
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
--- Content provided by FirstRanker.com ---
2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
- (a) Define : Nano fluids with suitable example. [03]
(b) Give comparison between Paramagnetic and Ferromagnetic materials. [04]
(c) Explain effect of temperature on Diamagnetic, Paramagnetic and Ferromagnetic materials. [07] - (a) What is Super- Para magnetism? [03]
(b) Explain magnetic hysteresis loop with necessary sketch. [04]
(c) Write a short note on Ferro fluid. [07]OR
(c) Write a short note on applications of Nano fluids. [07] - (a) Explain origin of magnetism. [03]
--- Content provided by FirstRanker.com ---
(b) Explain properties of Ferro fluids. [04]
(c) Explain effect of reducing size on coercivity leading to Ssuper-paramagnetic effect. [07]OR
(a) Describe Ferromagnetic materials. [03]
(b) Define bottom up and top down approach to prepare Nano fluid. [04]
(c) Write note on applications of Super-paramagnetic clusters or Ferro fluids. [07] - (a) Describe Paramagnetic materials. [03]
(b) Explain Electro discharge technique to prepare nano fluid. [04]
(c) Write note on smart cooling using Nano fluid [07]OR
(a) Define: Coercivity, Retentivity and Saturation Magnetization. [03]
(b) Explain sol —gel technique to synthesize Nano fluid. [04]--- Content provided by FirstRanker.com ---
(c) Describe applications of magnetic materials as memory storage device. [07] - (a) What are soft Ferro- magnets? Write their applications. [03]
(b) Give comparison between Diamagnetic and Paramagnetic materials. [04]
(c) Explain cause behind domain wall formation in terms of magnetostatic, anisotropy and exchange energies. [07]OR
(a) What are hard ferromagnets? Write their applications. [03]--- Content provided by FirstRanker.com ---
(b) Give comparison between Diamagnetic and Ferromagnetic materials. [04]
(c) Explain domain wall. Which parameters affect the thickness of the domain wall? [07]
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University