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Home Electronics and Communication Engineering Materials and Components See What Others Are Saying!
  • Question
  • A material which is lightly repelled by a magnetic field is known as


  • Options
  • A. diamagnetic material
  • B. non-magnetic material
  • C. ferromagnetic material
  • D. paramagnetic material

  • Correct Answer
  • diamagnetic material 


  • More questions

    • 1. Which power amplifier can deliver maximum load power?

    • Options
    • A. Class A
    • B. Class AB
    • C. Class B
    • D. Class C
    • Discuss
    • 2. The attraction between the nucleus and valence electron of copper atom is

    • Options
    • A. zero
    • B. weak
    • C. strong
    • D. either zero or strong
    • Discuss
    • 3. Wood is a diamagnetic material.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. In a receiver, which of the following device has RF input but IF output?

    • Options
    • A. Loudspeaker
    • B. Frequency changer
    • C. Demodulator
    • D. Audio amplifier
    • Discuss
    • 5. Fidelity of a receiver represents

    • Options
    • A. the sensitivity expressed in terms of voltage that must be applied to the receiver input to give a standard output
    • B. the extent to which the receiver is capable of distinguishing between the desired signal and other frequencies
    • C. the variation of the output with the modulation frequency when the output impedance is a resistance
    • D. none of the above
    • Discuss
    • 6. As per BIS there are 6 accuracy classes of instruments.

    • Options
    • A. True
    • B. False
    • Discuss
    • 7. In superheterodyne receivers, the local oscillator is used to

    • Options
    • A. detect the modulating signal
    • B. amplify the received modulated carrier
    • C. shift the frequency of the received modulated carrier to the IF band
    • Discuss
    • 8. A receiver having an RF amplifier and an IF of 450 kHz, has Q of the coils 65 and an incoming frequency of 1200 kHz. The image rejection of the receiver is

    • Options
    • A. 5870
    • B. 3655
    • C. 236
    • D. 13.3
    • Discuss
    • 9. A dynamometer wattmeter is connected in ac circuit. The reading will be

    • Options
    • A. V-A product
    • B. average power
    • C. peak power
    • D. instantaneous power
    • Discuss
    • 10. In an R-C series circuit excited by a voltage E, the charge across capacitor at t = 0+ is

    • Options
    • A. 0
    • B. CE
    • C. CE (1 - e-t/RC)
    • D. none of the above
    • Discuss


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