Related Questions

When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.
A True
B False
Which of the following material has least value of dielectric constant ?
A Ceramics
B Oil
C Glass
D Paper
A dielectric material is:
A a good conductor
B a good insulator
C a poor conductor of electrostatic fields
D a good conductor of magnetic fields
E None of the above
The dielectric constant is the ability of a material to establish an electric field.
A True
B False
A dielectric material must be
A resistor
B insulator
C good conductor
D semi conductor
Dielectric strength of a material depends on
A moisture content
B temperature
C thickness
D all of the above
The dielectric constant of a material is a measure of:
A the amount of voltage it can withstand before breaking down
B how well the material concentrates electrostatic lines of force
C the amount of opposition to the current flow
D how well the material concentrates magnetic lines of force
E None of the above
Dielectric strength of a material is
A Its energy stroage capacity
B A magnetic property
C Its capacity to resist the flow of current
D Its capacity to withstand high voltage
The instruction state that Sumi may need 4/9 square yards of one type of material and 2/3 square yards of another type of material for a project. She buys exactly that amount. After finishing the project, however, she has 8/18 square yards left that she did not use. What is the total amount of square yards of material Sumi used?
A 1/12
B 1/9
C 2/3
D 10/9
An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is
A Stainless steel
B Cast iron
C Wood
D Teflon

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