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Materials And Components(Engineering > Electrical Engineering ) Questions and Answers
Home
Topic
Engineering
Electrical Engineering
Materials And Components
Question 1.
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
Explanation:-
Answer: Option A. ->
High permittivity
Question 2.
Which inductor is linear?
Air cored
Cast iron cored
Sheet steel cored
Iron alloy cored
Explanation:-
Answer: Option A. ->
Air cored
Question 3.
The materials which become polarized on the application of mechanical stress are called piezoelectric.
True
False
Explanation:-
Answer: Option A. ->
True
Question 4.
As the viscosity of a liquid increases, the relaxation time
Remains constant
Increases
Decreases
First decreases then increases
Explanation:-
Answer: Option B. ->
Increases
Question 5.
Which inductor is used at high frequencies?
Cast iron cored
Sheet steel cored
Iron alloy cored
Ceramic cored
Explanation:-
Answer: Option D. ->
Ceramic cored
Question 6.
The dielectric losses do not depend on frequency.
True
False
Explanation:-
Answer: Option B. ->
False
Question 7.
A characteristic property of crystal is its periodicity of structure.
True
False
Explanation:-
Answer: Option A. ->
True
Question 8.
An atom of a rare gas is placed is an electric field E. Then
The nucleus will be shifted in the direction of E by an amount which is proportional to E.
The nucleus will not be shifted.
The nucleus will be shifted in the direction of E by an amount which is independent of E.
The nucleus will be shifted in a direction opposite to that of E.
Explanation:-
Answer: Option A. ->
The nucleus will be shifted in the direction of E by an amount which is proportional to E.
Question 9.
The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as
Matthiessen’s rule
Debye rule
Curie rule
Onne’s rule
Explanation:-
Answer: Option A. ->
Matthiessen’s rule
Question 10.
Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
Debye temperature
Curie temperature
Neel temperature
Transition temperature
Explanation:-
Answer: Option A. ->
Debye temperature
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