logo

CuriousTab

CuriousTab

Discussion

Home ‣ Electronics and Communication Engineering ‣ Matching Questions See What Others Are Saying!
  • Question

  • Match the following:

    List I List II
    A. Silicon 1. Donor Impurity
    B. Antimony 2. Acceptor Impurity
    C. Gallium 3. Most Commonly used semiconductor material
    D. Germanium 4. Atomic number 32


  • Options
  • A. A-3, B-1, C-2, D-4
  • B. A-2, B-3, C-1, D-4
  • C. A-1, B-2, C-3, D-4
  • D. A-4, B-3, C-2, D-1

  • Correct Answer
  • A-3, B-1, C-2, D-4 

    • More questions

    • 1. The total number of leads in reverse conducting thyristor is

    • Options
    • A. 2
    • B. 3
    • C. 1
    • D. 4
      • Discuss
    • 2. Even at room temperature, an intrinsic semiconductor has some holes. These holes are due to

    • Options
    • A. electron
    • B. doping
    • C. thermal energy
    • D. free electrons
      • Discuss
    • 3. Assertion (A): Inter-digitated geometry is widely used for microwave transistors.

      Reason (R): Tuning at input and output of transistor uses MOS chip capacitors.


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R are correct but R is not correct explanation of A
    • C. A is correct but R is wrong
    • D. A is wrong but R is correct
      • Discuss
    • 4. A waveguide twist is used to change the plane of polarization.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Rochelle salt is a ferroelectric material.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. A line has Z0 = 300 ? 0° ?. If ZL = 150 ? 0° ?, reflection coefficient is

    • Options
    • A. 0.5
    • B. 0.3333
    • C. -0.3333
    • D. -0.5
      • Discuss
    • 7. The number of valence electrons in trivalent impurity is

    • Options
    • A. 5
    • B. 4
    • C. 3
    • D. 1
      • Discuss
    • 8. In a single phase full wave ac regulator using two thyristors only, the gate circuits of the two thyristors

    • Options
    • A. must be isolated
    • B. may or may not be isolated
    • C. should be preferably, isolated
    • D. should not be isolated
      • Discuss
    • 9. In a ripple counter,

    • Options
    • A. whenever a flip flop sets to 1, the next higher FF toggles
    • B. whenever a flip flop sets to 0, the next higher FF remains unchanged
    • C. whenever a flip flop sets to 1, the next higher FF faces race condition
    • D. whenever a flip flop sets to 0, the next higher FF faces race condition
      • Discuss
    • 10. Maximum efficiency of class B power amplifier is 50%.

    • Options
    • A. True
    • B. False
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.