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  1. R

    ELECTRICAL AND ELECTRONICS Instrumentation

    I am also getting 3.414, but answer is 3.46,how did you get 3.46 amp - - - Updated - - - Here what is the purpose of performing square and square root
  2. R

    Switched mode power supply

    1.The output of 12V SMPS is monitored in an oscilloscope with AC coupling enabled and with appropriate setting of time base and amplitude. What will be the waveform observed in the oscilloscope ? ans) Ripple alone can u please explain how did you get ripple alone
  3. R

    ELECTRICAL AND ELECTRONICS Instrumentation

    How did you get 3.414 ,explain clearly - - - Updated - - - how did you get 3.414 , can u please explain clearly
  4. R

    ELECTRICAL AND ELECTRONICS Instrumentation

    1. The current passing through a 10 ohm resistance is given by I=5+5√3 cos314t. The current is measured by a PMMC meter. What is the measured value?
  5. R

    ELECTRICAL AND ELECTRONICS Instrumentation

    1. The current in a 20 ohm resistor is given by I=2+4sin314t. The current is measured by a hot wire ammeter. What is the measured value?
  6. R

    Standard resistance values

    1.Which is not a "common" value of resistance. a) 2K7 b) 1M8 c) 330R d) 4K4 The Answer is 4K4 how?
  7. R

    Phasor diagram of a Amplitude modulation and Frequency modulation

    How to draw the Phasor diagrams of A.M and F.M. what are the reasons for the following two cases (1). In A.M the resultant of the two side band vectors is always in-phase with carrier component ,Why? (2). In F.M the resultant side band vector is always in phase-quadrature with carrier...
  8. R

    [moved] microprocessor basics

    A Microprocessor is (a) an analog device (b) a Digital device (c) Either an analog or a digital device (d)A combined analog and digital device which option is correct
  9. R

    PN junction diode Characteristics

    Explain the meaning of following statement: As doping increases the contact potential of the PN diode junction increases
  10. R

    Electronic Devices basics

    If an electron pass through a potential of 1 volt then its potential energy and kinetic energy will decrease by a 1 ev. Please explain how this statement corect
  11. R

    Analog Communication - frequencies for AM vs FM

    Why we are using KHz to A.M and MHz to F.M. If we reverse the frequencies what happens i.e. for A.M MHz and for F.M KHz.
  12. R

    voltage gain and bandwidth of an op-amp

    What is the meaning of virtual ground concept , what is the advantage of keeping virtual ground - - - Updated - - - i want what is the advantage of having infinity bandwidth for an ideal op-amp
  13. R

    voltage gain and bandwidth of an op-amp

    Hi,all In op-amp the band and openloop voltage gains are equal to infinity, what is the advantage of keeping both infinity

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