MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The symmetry of BaTiO3 in ferroelectric form is _________ |
| A. | Cubic |
| B. | Tetragonal |
| C. | Trigonal Bipyramidal |
| D. | Octahedron |
| Answer» C. Trigonal Bipyramidal | |
| 2. |
The curie temperature for KH2PO4 is ________ |
| A. | 100 K |
| B. | 123 K |
| C. | 178 K |
| D. | 273 K |
| Answer» C. 178 K | |
| 3. |
Rochelle salt is ferroelectric only in the Temperature range 255 K to 296 K. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following is not a group of Ferroelectric Materials? |
| A. | The Rochelle salt group |
| B. | The KDP group |
| C. | The Phosphate group |
| D. | The Perovskites group |
| Answer» D. The Perovskites group | |
| 5. |
Which part of the curve shows Spontaneous Polarization? |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 6. |
The polarization left when the field is reduced to zero is called _______ |
| A. | Residual Polarization |
| B. | Spontaneous Polarization |
| C. | Permanent Polarization |
| D. | Dipolar Polarization |
| Answer» B. Spontaneous Polarization | |
| 7. |
Which quantity of a ferroelectric material varies with temperature in the following graph? |
| A. | Polarization |
| B. | Polarizability |
| C. | Dielectric Constant |
| D. | Hysteresis loop |
| Answer» D. Hysteresis loop | |
| 8. |
What happens in Ferroelectric material when T < Tc? |
| A. | Non-polarized |
| B. | Spontaneously polarized |
| C. | Becomes Para-electric |
| D. | Hysteresis loss |
| Answer» C. Becomes Para-electric | |
| 9. |
The dielectric constant of a ferroelectric material changes with _______ |
| A. | Frequency |
| B. | Temperature |
| C. | Atmospheric Pressure |
| D. | Wavelength |
| Answer» C. Atmospheric Pressure | |
| 10. |
The temperature characteristic of every ferroelectric crystal is called ________ |
| A. | Transition Temperature |
| B. | Crystal Temperature |
| C. | Ferro Temperature |
| D. | Weiss Temperature |
| Answer» B. Crystal Temperature | |
| 11. |
All ferroelectric materials are pyroelectric and piezoelectric. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Polarization in Ferroelectric materials is ___________ |
| A. | Permanent |
| B. | Spiked |
| C. | Linear |
| D. | Reversible |
| Answer» E. | |
| 13. |
Dielectrics which show spontaneous polarization are called as __________ |
| A. | Pyroelectric |
| B. | Piezoelectric |
| C. | Ferroelectric |
| D. | Centrosymmetric |
| Answer» D. Centrosymmetric | |