Semiconductors in devices

Exercise and reference answers

Questions

1. Question

   Semiconductors are the basic materials of

   Choices

   1. steel making
   2. glassware
   3. solid state electronic devices

   Correct choice

   solid state electronic devices

2. Question

   Which of these is a semiconductor device?

   Choices

   1. diode
   2. lever
   3. pulley

   Correct choice

   diode

3. Question

   The charge carriers in an intrinsic semiconductor are

   Choices

   1. protons only
   2. electrons and holes
   3. neutrons

   Correct choice

   electrons and holes

4. Question

   Those carriers come from

   Choices

   1. chemical reaction
   2. magnetism
   3. thermal excitation

   Correct choice

   thermal excitation

Explanation