General Knowledge - General Science - Discussion


The two elements that are frequently used for making transistors are

[A]. boron and aluminium
[B]. silicon and germanium
[C]. iridium and tungsten
[D]. niobium and columbium

Answer: Option B


No answer description available for this question.

V.Kandeepan said: (Jan 2, 2011)  
Silicon and Germainium are semiconductor materials, which normally prefered in making transistors, diodes ets. Since the semi conductor materials having the characteristics of acting as a conductor if the temperature increases and insulator if the temperatur decreases (negative temperature coefficient).

Kriti said: (Jul 24, 2012)  
Silicon and germanium are semiconductors materials which behave both as conductors and insulators.

Prasanth said: (Aug 8, 2013)  
Both silicon and germanium are semiconducting materials.

Sumit Maan said: (Jan 23, 2014)  
Both are semiconductors and show the properties of conductor and insulator at high and low temperature respectively.

Ramesh Nvs said: (Feb 7, 2014)  
These materials having peculiar electrical properties, they neither fully conductor nor fully insulator and we can alter the properties by doping with specific dopant.

Firdous Ahmad said: (Apr 9, 2015)  
Silicons in mostly used because of low leakage current as compared to germanium which has high leakage current at high temperatures.

Firdous Ahmad said: (Apr 9, 2015)  
Si is more widely used in transistors. As si has low leakage current than Ge at high temperatures.

Taniya Jain said: (Apr 19, 2015)  
Silicon and Germanium but now today a days we also use Gallium.

Kuldeep said: (Sep 22, 2015)  
All semiconductor material has 4 valance e- so it requires less energy to participate in conduction i.e. 0.3 for Ge and 0.7 eV for si and that much of energy is generated at room temperature so it acts like conductor but at low temperature the energy is not so much so it acts like insulator.

Abc said: (Mar 31, 2016)  
What is meant by transistors?

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