This set of Engineering Materials Science "Multiple Choice Questions & Answers" are based on "ELECTRICAL PROPERTY"
ELECTRICAL PROPERTY
Multiple Choice Questions (MCQ)
Hello reader, here you can find some MCQ with answers. But before reading this I will suggest you take a practice test on these questions given below. so you can understand your strength on this topic.
Click here to go Practice Test section on this topic namely Electrical Property.
But if you want to read this topic first and then practice it then read it carefully. The Multiple Choice Questions (MCQ) based on Electrical Property are given below:
PART - II
1) According to conductivity solid materials may be classified in how many types?
Correct Answer is "B"
According to conductivity, solid materials may be classified into 3 types i.e. conductor, semi-conductor, and insulator.
2) The conductivity of metal is in the order of
Correct Answer is "C"
The conductivity of metal is in the order of 107
3) The conductivity of Semi-conductor is in the range of
Correct Answer is "B"
The conductivity of Semi-conductor is in the range of 10-6 – 104
4) The conductivity of the Insulator is in the range of
Correct Answer is "C"
The conductivity of the Insulator is in the range of 10-10 – 10-20.
5) In a superconductivity state
Correct Answer is "B"
In superconductivity state Entropy increases and thermal conductivity decreases
6) The width of the energy gap of a superconductor is maximum at
Correct Answer is "D"
The width of the energy gap of a superconductor is maximum at 0 K
7) Which of the following represents the energy band diagram of semiconducting material?
Correct Answer is "C"
For semiconducting material bandgap present between valence (completely filled) and conduction (empty) band and the forbidden energy gap is less (<2 eV)
8) Which of the following represents the energy band diagram of insulating material?
Correct Answer is "D"
For insulating material bandgap present between valence (completely filled) and conduction (empty) band and the forbidden energy gap is more (>2 eV)
9) Which of the following represents the energy band diagram of copper?
Correct Answer is "A"
Figure 1 is the band diagram of copper in which there are available electron states above and adjacent to filled states, in the same band.
10) Forbidden energy gap for the semiconductor is _____ eV
Correct Answer is "B"
Forbidden energy gap for the semiconductor is <2 eV
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