Semiconductor Principles Questions and Answers

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Q51
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
Q52
Which semiconductor material is made from coal ash?
  • A germanium
  • B silicon
  • C tin
  • D carbon
Answer: Option A
Q53
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
Q54
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
Q55
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
Q56
Solid state devices were first manufactured during:
  • A World War 2
  • B 1904
  • C 1907
  • D 1960
Answer: Option D
Q57
Electron pair bonding occurs when atoms:
  • A lack electrons
  • B share holes
  • C lack holes
  • D share electrons
Answer: Option D
Q58
How many valence electrons are in every semiconductor material?
  • A 1
  • B 2
  • C 3
  • D 4
Answer: Option D
Q59
What is a type of doping material?
  • A extrinsic semiconductor material
  • B pentavalent material
  • C n-type semiconductor
  • D majority carriers
Answer: Option B
Q60
Minority carriers are many times activated by:
  • A heat
  • B pressure
  • C dopants
  • D forward bias
Answer: Option A

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