This set of Engineering Materials Science "Multiple Select Questions & Answers" are based on "ELECTRICAL PROPERTY"
ELECTRICAL PROPERTY
Multiple Select Questions (MSQ)
Hello reader, here you can find some MSQ 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 Select Questions (MSQ) based on Electrical Property are given below:
1) Ohm’s law is not applicable to
Correct Answer is "A", "B", "C"
Ohm’s law is applicable to Insulator and conductor.
2) Ohm’s Law can be expressed as
Correct Answer is "A", "B", "D"
Ohm’s Law can be expressed as V = IR, J = σε, σ = IL/VA
3) Conductivity of a material is defined as
Correct Answer is "B", "C", "D"
Conductivity of a material is defined as σ = IL/VA, σ = L/RA, σ = J/ε.
4) The frictional forces which counter the acceleration of electrons results from
Correct Answer is "A", "B", "C", "D"
The frictional force which counters the acceleration of electrons results from the vacancies, dislocation, impurity atoms, interstitial atoms, and thermal vibrations.
5) Example of conducting polymer is/are
Correct Answer is "B", "C", "D"
Example of conducting polymers is Polyaniline, Polypyrrole, Polyacetylene, Polyparaphenylene, etc.
6) n-type or p-type conducting polymer is prepared by doping
Correct Answer is "C", "D"
n-type or p-type conducting polymer is prepared by doping AsF5, SbF5, Iodine, etc.
7) Which of the following materials display ferroelectricity
Correct Answer is "A", "B", "C", "D"
Rochelle salt, Potassium niobate, Lead zirconate titanate, Barium titanate displays ferroelectricity.
8) Which of the following is not correct?
Correct Answer is "A", "D"
Ferroelectric material exhibits spontaneous polarization.
An electric field is generated when mechanical stress is applied to a piezoelectric material.
Ferroelectric materials have an extremely high dielectric constant.
Piezoelectric materials are used in ultrasonic therapy.
An electric field is generated when mechanical stress is applied to a piezoelectric material.
Ferroelectric materials have an extremely high dielectric constant.
Piezoelectric materials are used in ultrasonic therapy.
9) Semiconductor device is used in
Correct Answer is "B", "C", "D"
Semiconductor devices are used in p-n rectifying junction, MOSFET, and Flash memory. The piezoelectric material is used in Insulin pumps.
10) The temperature at which a metal becomes a superconductor is called
Correct Answer is "A", "B"
The temperature at which a metal becomes a superconductor is called Critical Temperature or Transition Temperature.
11) Example of an intrinsic semiconductor is/are
Correct Answer is "A", "B", "C", "D"
Examples of intrinsic semiconductors are Si, Ge, ZnTe, GaAs, InSb, CdS, etc.
12) n-type semiconductor is prepared by doping ______ atom into the Si.
Correct Answer is "A", "C"
An n-type semiconductor is prepared by doping pentavalent (P, As, and Sb) atom into the Si.
Do you read all the questions and answers given above carefully? let's make a practice on all the questions given above.
Go to: Practice Test on Electrical Property (MSQ)
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