PYQs

Dielectric & Magnetic Materials

Year – 2024


  1. Distinguish polar and nonpolar dielectrics. (JNTUH-Jan/Feb 2024) 1M
  2. Write the significance of hysteresis loop in magnetism. (JNTUH-Jan/Feb 2024) 1M
  3. What do you mean by internal field? Derive the expression for internal field for solids. (JNTUH-Jan/Feb 2024) 5M
  4. Derive Clausius-Mososotti relationship for cubic solids. (JNTUH-Jan/Feb 2024) 5M
  5. Analyse the working of liquid crystal display. (JNTUH-Jan/Feb 2024) 5M
  6. Analyse the working and characteristics of solid fuel cells. (JNTUH-Jan/Feb 2024) 5M
  7. List the applications of dielectrics. (CBIT-June 2024) 2M
  8. Determine Dielectric constant of sample by Schering bridge method. (CBIT-June 2024) 5M
  9. Obtain an expression for electronic polarizability. (CBIT-June 2024) 5M
  10. Compare Soft and Hard magnetic materials. (CBIT-June 2024) 5M
  11. Discuss Ferroelectricity with its properties. (CBIT-June 2024) 5M
  12. Draw the structure of BaTiO₃ above 120°C. (CBIT-2024) 2M
  13. Discuss the frequency dependence of various polarization processes in dielectric materials. (CBIT-2024) 5M
  14. Classify magnetic materials. (CBIT-2024) 5M
  15. Explain in detail the domain theory of ferromagnetism. (CBIT-2024) 5M

Year – 2023


  1. Give two examples of paramagnetic material. (JNTUH-Sep 2023) 1M
  2. What happens to a ferromagnetic material heated above curie temperature? (JNTUH-Sep 2023) 1M
  3. Define Symmetry in solids. (JNTUH-Mar/Apr 2023) 1M
  4. State pyroelectric. (JNTUH-Mar/Apr 2023) 1M
  5. What are the applications of Energy Materials?(JNTUH-Mar 2023) 1M
  6. Explain how the dielectric constant of a ferroelectric material varies with temperature. Name two ferroelectric materials? (JNTUH-Sep 2023) 5M
  7. What are the applications of ferroelectric materials? (JNTUH-Sep 2023) 5M
  8. Define the following terms (JNTUH-Sep 2023)5M
    (i) Dielectric Polarization
    (ii) Polarisability
    (iii) Dielectric Constant
    (iv) Spontaneous polarization
    (v) Electric susceptibility.
  9. What is a bubble memory? What type of materials are used in it? (JNTUH-Sep 2023)5M
  10. What is ferroelectricity? Explain properties of ferroelectric materials. (JNTUH-Mar/Apr 2023) 5M
  11. Write a note on bubble memory devices. (JNTUH-Mar/Apr 2023) 5M
  12. Write a note on multiferroics. (JNTUH-Mar/Apr 2023) 5M
  13. Explain construction and working principle of rechargeable ion batteries.(JNTUH-Mar/Apr 2023) 5M