Power Transistors-2 MCQ

Test your knowledge with important Power Transistors-2 MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Power Transistors-2 MCQs at Bissoy

• Let’s say that a transistor is operating at the middle of the load line, then a decrease in the current gain would
  ক

  move the Q point up

  খ

  move the Q point down

  গ

  result in to & fro motion of the Q point

  ঘ

  not change the Q point
• Choose the correct statement
  ক

  A transistor will remain on as long the the base current is applied

  খ

  A transistor remains on after a high to low pulse is applied at the base

  গ

  A transistor will remain on as long the the collector current is applied

  ঘ

  A transistor remains on after a high to low pulse is applied at the collector
• Which of the following relations is true for a BJT?
  ক

  Ic ≈ Ie

  খ

  Ib ≈ Ic

  গ

  Ie ≈ Ib

  ঘ

  Ib ≈ Ie ≈ Ic
• A 1mv of i/p gives an output of 1V, the voltage gain as such would be
  ক

  0.001

  খ

  0.0001

  গ

  1000

  ঘ

  100
• For a power transistor, the average power loss during the delay time can be given by the equation
  ক

  Ic * Vc

  খ

  1/T * ∫Td (Ic Vce) dt

  গ

  Ic * dVc/dt * T

  ঘ

  1/T * ∫(Td *Tr) (Ic Vc) dt
• The instantaneous power loss during the delay time of a transistor is given by
  ক

  Ic Vce

  খ

  Ib Vbe

  গ

  Ic Vbe

  ঘ

  Ib Vce
• High frequency operation of any device is limited by the
  ক

  forward voltage rating

  খ

  switching losses

  গ

  thermal conductivity

  ঘ

  heat Sink arrangements
• For a power transistor, which of the following relations is true?
  ক

  Ie>Ic>Ib

  খ

  Ib>Ic>Ie

  গ

  Ic>Ie>Ib

  ঘ

  Ie=Ib
• The power electronics devices have a very high efficiency because
  ক

  cooling is very efficient

  খ

  the devices traverse active region at high speed & stays at the two states, on and off

  গ

  the devices never operate in active region

  ঘ

  the devices always operate in the active region
• For a power transistor, if the forward current gain α = 0.97, then β = ?
  ক

  0.03

  খ

  2.03

  গ

  49.24

  ঘ

  32.33