Electronic Devices and Circuits MCQs with answers Page - 28

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Q. A linear resistor having 0 < R < °o is a

  • (A) current controlled resistor
  • (B) voltage controlled resistor
  • (C) both current controlled and voltage controlled resistor
  • (D) none of the above

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Q. A star circuit has element of resistance R/2. The equivalent delta elements will be

  • (A) r/6
  • (B) fi?
  • (C) 2r
  • (D) 4r

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Q. A delta circuit has each element of value R/2. The equivalent elements of star circuit with be

  • (A) rig
  • (B) r/3
  • (C) 2r
  • (D) 3r

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Q. The number of independent equations to solve a network is equal to

  • (A) the number of chords
  • (B) the number of branches
  • (C) sum of the number of branches and chords
  • (D) sum of number of branches, chords and nodes

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Q. The superposition theorem requires as many circuits to be solved as there are

  • (A) sources, nodes and meshes
  • (B) sources and nodes
  • (C) sources
  • (D) nodes

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Q. Which of the following is a concern when using CMOS type devices?

  • (A) mechanical shock
  • (B) electrostatic discharge
  • (C) fan out
  • (D) under voltage

A

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Q. Which of the following is not a solution to interface problems between CMOS and TTL?

  • (A) pull-up resistor
  • (B) pull-down resistor
  • (C) level-shifter
  • (D) buffer

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Q. Which of the following is not a common logic family used today?

  • (A) rtl
  • (B) ecl
  • (C) ttl
  • (D) cmos

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Q. The output current for a LOW output is called a(n)

  • (A) exit current.
  • (B) sink current.
  • (C) ground current.
  • (D) fan-out.

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Q. A family of logic devices designed for extremely high speed applications is called

  • (A) nmos.
  • (B) ecl.
  • (C) pmos.
  • (D) ttl.

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