Unit 1 - ĐCN: Electrical Materials

Unit 1 - ĐCN: Electrical Materials

University

20 Qs

quiz-placeholder

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Unit 1 - ĐCN: Electrical Materials

Unit 1 - ĐCN: Electrical Materials

Assessment

Quiz

Other

University

Hard

Created by

Anh Nguyen

Used 4+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A material that can be melted and formed into shapes that become hard, and can then be melted again

Thermosetting plastic material

Conducting material

Semiconducting material   

Thermoplastic material

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A substance, such as silicon, that allows some electricity to flow through it, used in making electronic devices:

semiconductor         

dielectric

Insulator       

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many properties do the high resistivity materials have?

3

4

5     

6

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The forbidden energy gap between valence and ............. band is very small.

Empty

Semiconducting

Conduction

Electrical

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Soft magnetic materials have small ............ of hysteresis loop, high permeability, high saturation value, low eddy current losses which are achieved by using laminated cores, less residual magnetism.

Large area     

Enclosed area

Magnetic area

Resistant area

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The conducting materials are required to be joined and the joint must have minimum contact resistance. These materials must have a good ..........

Low temperature coefficient

Sufficient mechanical strength     

Ductility       

Solderability

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The material should have a high..........so that it should get oxidised when used in different environmental conditions.

Oxidation resistance

High melting point strength

High mechanical  

Low temperature coefficient

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