Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Electronics and Communication Engineering
»
Materials and Components
When a ferromagnetic substance is magnetised there are small changes in dimensions. This phenomenon is called
hysteresis
magnetostriction
diamagnetism
dipolar relaxation
Correct Answer:
magnetostriction
← Previous Question
Next Question→
More Questions from
Materials and Components
Electrical conductivity of metals expressed in ohm-1 m-1 is of the order of
In a polyatomic gas, the types of polarization which exist together are
In elemental dielectrics, the orientation and ionic polarization are absent.
An electron in a homogeneous magnetic field and having velocity perpendicular to the direction of field moves
An homogeneous dielectric material is subjected to an electric field E. If a small cavity is made inside the material, the electric field intensity inside and outside the cavity are different.
A particle of charge Q coulombs is bound elastically to an equilibrium position with a force constant of f newton per metre. The polarizability of the system is
In an hydrogen atom, an electron moves in the field of a proton. The stability of orbit requires equilibrium between coulomb's force and centrifugal force.
An electron shell corresponding to principal quantum number n can contain a maximum of
Assertion (A): Dielectric losses are proportional to tan δ. Reason (R): tan δ = where ∈r' and ∈r" denote the real and imaginary parts of ∈r.
Spontaneous polarization occurs in ferroelectric materials.
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments