Carrier Life time MCQ

Test your knowledge with important Carrier Life time MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Carrier Life time MCQs at Bissoy

• The rate of change of the excess density is proportional to the density. Is it true of false?
  ক

  True

  খ

  False
• Which of the following is used as the recombination agent by semiconductor device manufactures?
  ক

  Silver

  খ

  Gold

  গ

  Platinum

  ঘ

  Aluminium
• The number of majority carriers that are available for recombining with excess minority carriers decreases as the excess semiconductor becomes intrinsic. Is it true?
  ক

  True

  খ

  False
• Calculate the carrier lifetime when Cp=5 and Nt=1010cm-3.
  ক

  2*1011

  খ

  2*10-11

  গ

  20*10-11

  ঘ

  20*1011
• At what condition, the rate of electron capture from the conduction band and the rate of the electron emission back into the conduction band must be equal?
  ক

  Thermal equilibrium

  খ

  At room temperature

  গ

  T=250K

  ঘ

  At boiling temperature
• Calculate the emission rate where En=2.5, Nt=1010cm-3 and fF (Et)=0.6 .
  ক

  15*1010

  খ

  1.5*1010

  গ

  15*1011

  ঘ

  1.5*1011
• Calculate the capture rate where Cn=10, Nt=1010cm-3, n=1020 and fF (Et)=0.4.
  ক

  6*1030

  খ

  5*1030

  গ

  36*1030

  ঘ

  1.66*1029
• Calculate the recombination rate if the excess carrier concentration is 1014cm-3 and the carrier lifetime is 1µseconds.
  ক

  108

  খ

  1010

  গ

  1020

  ঘ

  1014
• What is the process number of Schokley-Read-Hall Theory processes? Process-‘ The capture of an electron from the conduction band by an initially neutral empty trap’
  ক

  Process1

  খ

  Process2

  গ

  Process3

  ঘ

  Process4
• What is the range of the carrier lifetime?
  ক

  Nanoseconds to microseconds

  খ

  Nanoseconds to hundreds of microseconds

  গ

  Nanoseconds to tens of microseconds

  ঘ

  Nanoseconds to milliseconds