Electronic Devices and Circuits MCQs with answers Page - 45

Here, you will find a collection of MCQ questions on Electronic Devices and Circuits. Go through these questions to enhance your preparation for upcoming examinations and interviews.

To check the correct answer, simply click the View Answer button provided for each question.

Have your own questions to contribute? Click the button below to share your MCQs with others!

+ Add Question

A

Admin • 833.24K Points
Coach

Q. A forward potential of 10V is applied to a Si diode. A resistance of 1 K? is also in series with the diode. The current is ?

  • (A) 10 mA
  • (B) 9.3 mA
  • (C) 0.7 mA
  • (D) 0

A

Admin • 833.24K Points
Coach

Q. In the diode equation, the voltage equivalent of temperature is ?

  • (A) 11600/T
  • (B) T/11600
  • (C) T x 11600
  • (D) 11600/T2

A

Admin • 833.24K Points
Coach

Q. Barrier potential at the room tem. (250 C) is 0.7V, its value at 1250 C is ?

  • (A) 0.5 V
  • (B) 0.3 V
  • (C) 0.9 V
  • (D) 0.7 V

A

Admin • 833.24K Points
Coach

Q. When a reverse bias is applied to a diode, it will ?

  • (A) Raise the potential barrier
  • (B) Lower the potential barrier
  • (C) Increases the majority-carrier a current greatly
  • (D) None of these

A

Admin • 833.24K Points
Coach

Q. Which diode employs graded doping ?

  • (A) zener
  • (B) LED
  • (C) tunnel
  • (D) step-recovery

A

Admin • 833.24K Points
Coach

Q. Most of the electrons that flow through the base will ?

  • (A) Flow into the collector
  • (B) Flow out of the base lead
  • (C) Recombine with base holes
  • (D) Recombine with collector holes

A

Admin • 833.24K Points
Coach

Q. The energy gap in a semiconductor ?

  • (A) Increases with temperature
  • (B) Does not change with temperature
  • (C) Decreases with temperature
  • (D) Is zero

A

Admin • 833.24K Points
Coach

Q. In an intrinsic Semiconductor the free electron concentration depends on ?

  • (A) Effective mass of electrons only
  • (B) Effective mass of holes only
  • (C) Temperature of the Semiconductor
  • (D) Width of the forbidden energy hand of the semiconductor

A

Admin • 833.24K Points
Coach

Q. Direct band gap semiconductors ?

  • (A) Exhibit short carrier life time and they are used for fabricating BJT’s
  • (B) Exhibit long carrier life time and they are used for fabricating BJT’s
  • (C) Exhibit short carrier life time and they are used for fabricating Lasers
  • (D) Exhibit long carrier life time and they are used for fabricating BJT’s

A

Admin • 833.24K Points
Coach

Q. According to the Einstein relation, for any semiconductor the ratio of diffusion constant to mobility of carriers ?

  • (A) Depends upon the temperature of the semiconductor
  • (B) Depends upon the type of the semiconductor
  • (C) Varies with life time of the semiconductor
  • (D) Is a universal constant

Add MCQ in this Category

If you want to share an MCQ question in this category, it's a great idea! It will be helpful for many other students using this website.

Share Your MCQ

Browse Categories

Click on category to learn MCQs of that category.