What questions do interviewers ask Electronics and Communication Engineering graduates?

These are the most common questions for interviewing in an electronics company. This list includes a variety of subjects.

  1. What is a Flip flop and how do they work?
  2. You can tell the difference between flip-flops or latches.
  3. What is a totem pole?
  4. What is the transmission mode for TV signals?
  5. Draw the internal circuit for 8085 microprocessor.
  6. What is a bit? What is CMOS?
  7. What is FM’s bandwidth?
  8. How would an electronics engineer distinguish between digital and paper money?
  9. What is modem? Draw the internal diagram.
  10. Get a square wave using a sine wave Zener diodes.
  11. What is the difference between an oscillator or multivibrator
  12. What are blue tooth and WAP?
  13. What are trappatt and impatt diodes, you ask?
  14. What is an emitter follower?
  15. The order of discovery is to give the electromagnetic equations.
  16. Find the transfer function for a given RLC circuit.
  17. What happens if you enter user-name or password when you log on to Unix?
  18. Use NAND gates to draw the circuit for an addition.
  19. Explain the internal organization of memory chips.
  20. What are the various types of control systems available?
  21. Block diagram examples can help you explain open loop.
  22. What are the benefits of a closed loop?
  23. How do you create a stable system?
  24. Different stability criteria should be explained.
  25. One sentence to explain Ruthz-Hervitz rule
  26. What is the significance of poles?
  27. Does the room have a control system (interview hall?)?
  28. What is the Karnaugh map?
  29. Which are the four methods that can be used to reduce a Boolean expression
  30. Draw 8086 interior architecture.
  31. What are the differences between different types of buses?
  32. What are the various registers of CPU?
  33. What does segment register mean?
  34. Which 32-bit microprocessor is the first?
  35. What are the differences between UPS?
  36. Compare 8086 and 80286
  37. Describe the internal architecture of 8086.
  38. What are your thoughts on antennas?
  39. Define control system. What is the importance of control systems?
  40. Draw the block diagram for a control system, and then write its transfer function.
  41. What is ROC?
  42. Transformation between the S and Z planes
  43. What is wave studio?
  44. What is the bit rate?
  45. What’s the difference between mp3 files and wave formats?
  46. What is sampling?
  47. How can you dampen noises and jerks when recording?
  48. What is Winamp?
  49. What are plugins?
  50. Explain the workings of an OP/AMP.
  51. What’s the difference between output and input plugins?
  52. What are your thoughts on CD writing?
  53. How can you mix BGM? How do you mix BGM?
  54. What is a bus?
  55. What does 20-bit address bus mean?
  56. What is the ideal gain from an opampamp?
  57. What is a database?
  58. What database software is proprietary to IBM?
  59. What’s the difference between half-adder and full-adder?
  60. You can use a half-adder or a full addition.
  61. What is circuit switching and packet switching?
  62. What is VOIP (Voice over Internet Protocol), and how can it be used?
  63. What kinds of communications are you familiar with?
  64. Different types of digital communication should be explained.
  65. Explain the structure and reasons for MOSFET.
  66. What is the best way to amplify a transistor’s output?
  67. Classify power amplifiers (A, B, AB).
  68. What is doping?
  69. DMA controllers described.
  70. What protocol is used in a telephone network?
  71. Describe the different types of switching.
  72. What number of pins can you find in 8086?
  73. What is blue tooth’s greatest advantage?
  74. Which flip-flop is universal?
  75. What are interrupts? What is an interrupt?
  76. What is Dynamic Memory Access?
  77. What is SRAM and DRAM? Compare the costs of both.
  78. What happens if there is a power outage?
  79. What is modulation? What are the various modulation techniques?
  80. What are FM, PM, and AM? What happens when you compare the three?
  81. Which waves travel farther – AM or FM?
  82. What is a Thyristor? Differ between a thyristor or diode.
  83. Explain the witching actions of SCR and trigger.
  84. Draw the diagram for thyristor.
  85. TTL and CMOS are advantages
  86. What technology is used to create cmos logic
  87. What is VLSI and ULSI? How many components are in each?
  88. What are the components of the Pentium processor we use?
  89. What is the most recent Pentium processor? How fast is it?
  90. Describe the technology used to manufacture the Pentium processor.
  91. Design a decade counter.
  92. Explain the asynchronous and synchronous counters.
  93. Minimize function using Quine McCluskey: f = xy + x’y + yz + x’ y ‘z’.
  94. What is a prime implicant and how can it be used?
  95. What does an internal diagram of a diode show? Use internal diagrams to explain how you work.
  96. Describe the processes that occur in the depletion junction for a forward biased diode.
  97. What is an op amp and what does it do?
  98. What is a buffer? What is the benefit of a buffer
  99. What is an oscillator?
  100. How can you forward bias a transistor
  101. What practical uses are transistors used for?
  102. What is reverse recovery and how does it impact a diode’s performance?
  103. What is a compiler?
  104. How do you test a compiler that has certain boundary conditions?
  105. What is VHDL?
  106. What is FSF? What are your thoughts? Is it still relevant?
  107. What is the difference between closed loop and open loop control systems?
  108. Draw and explain how a monostable vibrator works using an op-amp.
  109. State Thevenin’s theorem, Norton’s theory. Which is their application?
  110. What mathematics is used in DSP? From which domain can signal conversion be made?
  111. There is a difference between extrinsic and intrinsic semiconductors.
  112. Draw an internal block diagram for a normal voltage stabilizer.
  113. What is a Reference Variable?
  114. Logarithmic volume control is used in TV. Why?
  115. Is MATLAB equipped with an interpreter?
  116. What are your thoughts on segmentation of memory in 8086
  117. What is virtual memory?
  118. You can distinguish between macros and functions within C.
  119. Explain the importance of electromagnetic interference in computer boards and PCBs.
  120. What are the pin connections to interrupts, memory, and peripherals?
  121. A rough diagram of a Mother Board using 8086 and the relevant connections.
  122. What is the tri-state?
  123. What are the differences in open collector output and totempole output?
  124. Given the rise, fall and propagation delays, find the clock frequency that is the highest in a digital circuit.
  125. Use MUX to implement Boolean expressions (2 to 4, 3, to 8, etc.
  126. Draw the state graphs for a problem such as sequence generator, flip-flops, etc.
  127. What is the purpose of calling the accumulator “the accumulator”?
  128. How do we create a stack?
  129. From a T flipflop, construct a D flipflop.
  130. What is virtual ground in an Opamp?
  131. What is the difference between uplinking frequency and downlinking frequency?
  132. What is the procedure for booting a computer?
  133. What is metastable in flip-flops and why are they so popular?
  134. What is the round-robin technique for interrupt arbitration?
  135. What is an avalanche? What happens when it occurs?
  136. Explain the operation and purpose of a Zener Diode.

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