Anubhava Circuit Design Challenge

50 Questions | Total Attempts: 303

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Anubhava Circuit Design Challenge - Quiz

INSTRUCTIONS:Every question contains negative points (+2 for correct, -1 for wrong)Please submit before time runs out. Team members can be 2-3. Once team is formed cannot be changedALL THE BEST!


Questions and Answers
  • 1. 
    A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat?
    • A. 

      33

    • B. 

      330

    • C. 

      Both resistors

    • D. 

      Neither resistors

  • 2. 
    When the current through the coil of an electromagnet reverses, the
    • A. 

      direction of the magnetic field reverses

    • B. 

      Direction of the magnetic field remains unchanged

    • C. 

      Magnetic field expands

    • D. 

      magnetic field collapses

  • 3. 
    When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to
    • A. 

      15

    • B. 

      12.9

    • C. 

      8.6

    • D. 

      19.45

  • 4. 
    If all the elements in a particular network are linear, then the superposition theorem would hold, when the excitation is
    • A. 

      DC only

    • B. 

      AC only

    • C. 

      Either AC or DC

    • D. 

      An Impulse

  • 5. 
    Mesh analysis is applicable for
    • A. 

      Planar networks

    • B. 

      Non planar networks

    • C. 

      Both planner and non-planar networks.

    • D. 

      Neither planner nor non planner networks

  • 6. 
    Which of the following memories uses one transistor and one capacitor as basic memory unit
    • A. 

      SRAM

    • B. 

      DRAM

    • C. 

      Both SRAM and DRAM

    • D. 

      Neither of them

  • 7. 
    A external resistance R is connected to a cell of internal resistance r, then the current is maximum when
    • A. 

      R>r

    • B. 

      R < r

    • C. 

      R=r

    • D. 

      None

  • 8. 
    What is referred as the average value in AC operation?
    • A. 

      TriangleAverage of all values of an alternating quantity.

    • B. 

      Average of all values of the phase sequences.

    • C. 

      Average of all values of the (+)ve and (-)ve half.

    • D. 

      Average of all values of an alternating quantity over a complete cycle.

  • 9. 
    An electric field line and an equipotential surface are
    • A. 

      Always 90°.

    • B. 

      Always parallel.

    • C. 

      Inclined at any angle.

    • D. 

      None

  • 10. 
    For a collpits oscillator, the capacitor values are 1micro farad and 10 micro farad. The inductor is 10 henry .Its frequency of oscillation approximately is,
    • A. 

      400Hz

    • B. 

      50Hz

    • C. 

      1Hz

    • D. 

      100Hz

  • 11. 
    Among the following the audio frequency oscillators are 1)rc phase shift 2)weins bridge 3) Hartley 4) collpit
    • A. 

      1 and 2

    • B. 

      3 and 4

    • C. 

      1 and 3

    • D. 

      1 and 4

  • 12. 
    The amplifiers used in radio and tv transmitters are
    • A. 

      Class A

    • B. 

      Class B

    • C. 

      Class AB

    • D. 

      Class C

  • 13. 
    In a transistor which is moderately doped
    • A. 

      Collector

    • B. 

      Emitter

    • C. 

      Base

    • D. 

      None

  • 14. 
    Generally,the configuration used in high frequency circuits is
    • A. 

      Common base

    • B. 

      Common Collector

    • C. 

      Common Emitter

    • D. 

      None

  • 15. 
    Generally,the configuration used in impedence matching is,
    • A. 

      Common base

    • B. 

      Common Collector

    • C. 

      Common Emitter

    • D. 

      None

  • 16. 
    In a voltage series connection the input impedence when compared to normal amplifier is
    • A. 

      Decreases

    • B. 

      Increases

    • C. 

      No change

    • D. 

      Can't determined

  • 17. 
    Commutative property of or gate is
    • A. 

      A+B=B+A

    • B. 

      AB=BA

    • C. 

      A(B+C)=AB+AC

    • D. 

      A+BC=(A+B)(A+C)

  • 18. 
    Which of the following is a digital device
    • A. 

      Regulator of a fan

    • B. 

      Microphone

    • C. 

      Resistance of a material

    • D. 

      Light switch

  • 19. 
    Which logic family provide minimum power dissipation
    • A. 

      TTL

    • B. 

      CMOS

    • C. 

      ECL

    • D. 

      JFET

  • 20. 
    Which is the example of digital device from the given option ?
    • A. 

      Sensors

    • B. 

      Recorder players

    • C. 

      Microprocessors

    • D. 

      Thermistors

  • 21. 
    NPN transistor is not suitable for good analog switch because
    • A. 

      IC −VCE characteristic curve pass directly through origin

    • B. 

      The device has very high input impedance.

    • C. 

      The device is asymmetrical with an offset voltage VCE off.

    • D. 

      It has well defined transition frequency

  • 22. 
    In figure v1 = 8 V and v2 = 4 V. Which diode will conduct?
    • A. 

      Only D1

    • B. 

      Only D2

    • C. 

      Both D1 and D2

    • D. 

      None

  • 23. 
    Simplification following Boolean expression gives, Expression= (A'BC')'+(AB'C)'
    • A. 

      1

    • B. 

      A

    • C. 

      Bc

    • D. 

      0

  • 24. 
    The most commonly used amplifier in sample and hold circuit is
    • A. 

      A unity gain inverting amplifier

    • B. 

      A unity gain non inverting amplifier

    • C. 

      An inverting amplifier with a gain of 10

    • D. 

      An inverting amplifier with a gain of 100

  • 25. 
    When the ac base voltage in a CE amplifier circuit is too high, the ac emitter current is
    • A. 

      Zero

    • B. 

      Constant

    • C. 

      Alternating

    • D. 

      Distorted

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