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ECE :: Analog Electronics

Analog Electronics - Section 1
Analog Electronics - Section 2
Analog Electronics - Section 3
Analog Electronics - Section 4
Analog Electronics - Section 5
Analog Electronics - Section 6
Analog Electronics - Section 7
Analog Electronics - Section 8
Analog Electronics - Section 9
Analog Electronics - section-1
Analog Electronics - Section 10
Analog Electronics - Section 11
Analog Electronics - Section 12
Analog Electronics - Section 13
Analog Electronics - Section 14
Analog Electronics - Section 15
Analog Electronics - Section 16
Analog Electronics - Section 17
Analog Electronics - Section 18
Analog Electronics - Section 19
Analog Electronics - Section 20
Analog Electronics - Section 21
Analog Electronics - section-22
Analog Electronics - Section-23

  1. When narrow current pulses drive a high Q resonant circuit the voltage across the circuit looks like

    2. A.
    narrow pulses
    B.
    half sine wave
    C.
    almost sine wave
    D.
    either (a) or (b)

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  2. The multivibrator circuit that has a typical application of converting sinusoidal input into a square wave output is

    3. A.
    emitter coupled binary
    B.
    Schmitt trigger
    C.
    monoshot multivibrator
    D.
    free-running multivibrator

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  3. Symbol shown in figure represents a

    4. A.
    P-channel enhancement MOSFET
    B.
    N-channel DEMOSFET
    C.
    UJT with P-type base
    D.
    UJT with N-type base

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  4. The feedback resistance rd in small signal model of MOSFET is of the order of

    5. A.
    1000 MΩ
    B.
    1 MΩ
    C.
    1 KΩ
    D.
    100 Ω

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  5. Which amplifier has a voltage gain of less than 1?

    6. A.
    Common emitter
    B.
    Common collector
    C.
    Common base
    D.
    Both CB and CC

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  6. A clamper

    7. A.
    adds a dc component to the input signal
    B.
    removes signal voltages above or below a specified value
    C.
    both (a) and (b)
    D.
    either (a) or (b)

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  7. For holding the drain current constant in spite of large changes in JFET parameters

    8. A.
    current source bias is used
    B.
    voltage divider bias is used
    C.
    reverse bias is used
    D.
    no bias is used

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  8. The main disadvantage of a JFET is

    9. A.
    low gain-bandwidth product
    B.
    high noise level
    C.
    high cost
    D.
    low gain

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  9. For Q >> 1, the output frequency of LC oscillator is equal to resonant frequency.

    10. A.
    True
    B.
    False

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  10. At the peak of negative half cycle in figure

    11. A.
    diode A is forward biased and diode B is reverse biased
    B.
    both diodes are reverse biased
    C.
    both diodes are forward biased
    D.
    diode A is reverse biased and diode B is forward biased

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