Dielectrics interview questions
Dielectrics interview questions
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Total Questions: 10
1. For non-polar molecules, there is no absorption or emission in the range of infrared.
Correct Answer is : TRUE
2. What is the process of producing electric dipoles inside the dielectric by an external electric field?
Correct Answer is : Polarisation
3. Which of the following easily adapt itself to store electrical energy?
Correct Answer is : Active dielectric
4. Which of the following restricts the flow of electrical energy?
Correct Answer is : Passive dielectrics
5. How does ionic polarisation occur?
Correct Answer is : Displacement of cations and anions
6. Potential drop in a dielectric is equal to _______
Correct Answer is : Electric field strength*thickness
7. The electric field strength is 10N/C and the thickness of the dielectric is 3m. Calculate the potential drop in the dielectric.
Correct Answer is : 30V
8. The electric fields of dielectrics having the same cross sectional area in series are related to their relative permittivities in which way?
Correct Answer is : Inversely proportional
9. What happens to the capacitance when a dielectric is introduced between its plates?
Correct Answer is : Increases
10. Calculate the relative permittivity of the second dielectric if the relative permittivity of the first is 4. The electric field strength of the first dielectric is 8V/m and that of the second is 2V/m.
Correct Answer is : 16
