Semiconductor Principles Questions and Answers

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Showing 10 of 63 questions
Q11
Which material may also be considered a semiconductor element?
  • A carbon
  • B ceramic
  • C mica
  • D argon
Answer: Option A
Q12
In "p" type material, minority carriers would be:
  • A holes
  • B dopants
  • C slower
  • D electrons
Answer: Option D
Q13
What can a semiconductor sense?
  • A magnetism
  • B temperature
  • C pressure
  • D all of the above
Answer: Option D
Q14
When an electron jumps from the valence shell to the conduction band, it leaves a gap. What is this gap called?
  • A energy gap
  • B hole
  • C electron-hole pair
  • D recombination
Answer: Option B
Q15
Forward bias of a silicon P-N junction will produce a barrier voltage of approximately how many volts?
  • A 0.2
  • B 0.3
  • C 0.7
  • D 0.8
Answer: Option C
Q16
Which semiconductor material is made from coal ash?
  • A germanium
  • B silicon
  • C tin
  • D carbon
Answer: Option A
Q17
When and who discovered that more than one transistor could be constructed on a single piece of semiconductor material:
  • A 1949, William Schockley
  • B 1955, Walter Bratten
  • C 1959, Robert Noyce
  • D 1960, John Bardeen
Answer: Option C
Q18
When is a P-N junction formed?
  • A in a depletion region
  • B in a large reverse biased region
  • C the point at which two opposite doped materials come together
  • D whenever there is a forward voltage drop
Answer: Option C
Q19
A P-N junction mimics a closed switch when it:
  • A has a low junction resistance
  • B is reverse biased
  • C cannot overcome its barrier voltage
  • D has a wide depletion region
Answer: Option A
Q20
Solid state devices were first manufactured during:
  • A World War 2
  • B 1904
  • C 1907
  • D 1960
Answer: Option D

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