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Home Electronics and Communication Engineering Radio Receivers See What Others Are Saying!
  • Question
  • Most of the amplification of the received signal is obtained in a superheterodyne receiver from the


  • Options
  • A. IF stage
  • B. RF stage
  • C. power amplification stage
  • D. none of the above

  • Correct Answer
  • IF stage 


  • More questions

    • 1. In an n-p-n transistor, the majority carriers in the base are

    • Options
    • A. electrons
    • B. holes
    • C. both holes and electrons
    • D. either holes or electrons
    • Discuss
    • 2. At a temperature of about 1 K, aluminium is a

    • Options
    • A. conductor
    • B. insulator
    • C. photoconductor
    • D. superconductor
    • Discuss
    • 3. The expression for satellite link frequencies such as 4/6 GHz denotes that

    • Options
    • A. 4 GHz is the up-link and 6 GHz is the down-link frequency
    • B. 4 GHz is the down-link and 6 GHz is the up-link frequency
    • C. the system operates at a mean frequency of 5 GHz
    • D. one frequency is used as a back up for the other
    • Discuss
    • 4. When temperature is more than ferromagnetic curie temperature, the behaviour of a ferromagnetic material is similar to that of paramagnetic material.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. The number of leads in an SCR are :

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 5
    • Discuss
    • 6. Assertion (A): From the slope of the line in Figure, we can find permanent dipole moment of the molecules.

      Reason (R): Total polarization of a polyatomic gas is given by P = N(ae + ai + ?2p / 3kT)E.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
    • Discuss
    • 7. Varactor diodes use

    • Options
    • A. silicon
    • B. GaAs
    • C. either (a) or (b)
    • D. neither (a) nor (b)
    • Discuss
    • 8. In a zener diode

    • Options
    • A. the forward current is very high
    • B. sharp breakdown occurs at a certain reverse voltage
    • C. the ratio v-i can be negative
    • D. there are two p-n junctions
    • Discuss
    • 9. Double integration of a unit step function would lead to

    • Options
    • A. an impulse
    • B. a parabola
    • C. a ramp
    • D. a doublet
    • Discuss
    • 10. In a three phase to single phase full wave bridge cycloconverter, the number of thyristors is

    • Options
    • A. 36
    • B. 18
    • C. 12
    • D. 8
    • Discuss


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