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Electrical engineering materials
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The change in dimensions during the
process of magnetisation is called magnetostriction [other wrong options] [Discuss in forum] |
| Q2 ⇒ On which of the following factors does
the resistivity of a material depend ? All of the above [other wrong options] [Discuss in forum] |
| Q3 ⇒ The metal having the lowest temperature
co-efficient of resistance is gold [other wrong options] [Discuss in forum] |
| Q4 ⇒ In a superconductor the value of critical
density depends upon both (a) and (b) [other wrong options] [Discuss in forum] |
| Q5 ⇒ By increasing impurity content in the
metal alloy the residual resistivity
always increases [other wrong options] [Discuss in forum] |
| Q6 ⇒ ____ is viscoelastic. Rubber [other wrong options] [Discuss in forum] |
| Q7 ⇒ Which of the following affect greatly
the resistivity of electrical conductors ? Composition [other wrong options] [Discuss in forum] |
| Q8 ⇒ Total number of crystal systems is 7 [other wrong options] [Discuss in forum] |
| Q9 ⇒ Carbon rods are used in wet and dry
cells because both (a) and (b) [other wrong options] [Discuss in forum] |
| Q10 ⇒ Due to which of the following reasons
copper and aluminium are not used for
heating elements ? All of the above [other wrong options] [Discuss in forum] |
| Q11 ⇒ Which of the following is a semiconductor
material ? Silicon [other wrong options] [Discuss in forum] |
| Q12 ⇒ Surface resistance of an insulating
material is reduced due to the both (a) and (b) [other wrong options] [Discuss in forum] |
| Q13 ⇒ The minority carrier concentration is
largely a function of temperature [other wrong options] [Discuss in forum] |
| Q14 ⇒ In ____ semiconductor, the Fermi level
lies midway between the conduction
and valence bands. intrinsic [other wrong options] [Discuss in forum] |
| Q15 ⇒ As compared to thermionic tubes, transistors claim which of the following
advantages ? All of the above [other wrong options] [Discuss in forum] |
| Q16 ⇒ The ionically and covalently bonded
materials are known as either of the above [other wrong options] [Discuss in forum] |
| Q17 ⇒ Which of the following insulating
material is in connnon use for overhead
power lines ? Both of the above [other wrong options] [Discuss in forum] |
| Q18 ⇒ Insulation resistance ____ with increase
in temperature. decreases [other wrong options] [Discuss in forum] |
| Q19 ⇒ Dielectric materials are essentially insulating materials [other wrong options] [Discuss in forum] |
| Q20 ⇒ Which of the following conditions go a
long way in causing the electrothermal
breakdown of the dielectric ? All of the above [other wrong options] [Discuss in forum] |
| Or |