Q.1
A characteristic property of crystal is its periodicity of structure.
  • True
  • False
Q.2
The dielectric losses do not depend on frequency.
  • True
  • False
Q.3
For making a capacitor it is better to have a dielectric having
  • High permittivity
  • Low permittivity
  • Permittivity same as that of air
  • Permittivity which is neither high nor low
Q.4
Which inductor is used at high frequencies?
  • Cast iron cored
  • Sheet steel cored
  • Iron alloy cored
  • Ceramic cored
Q.5
The materials which become polarized on the application of mechanical stress are called piezoelectric.
  • True
  • False
Q.6
As the viscosity of a liquid increases, the relaxation time
  • Remains constant
  • Increases
  • Decreases
  • First decreases then increases
Q.7
Which inductor is linear?
  • Air cored
  • Cast iron cored
  • Sheet steel cored
  • Iron alloy cored
0 h : 0 m : 1 s