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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. To bypass a 100 ohm emitter resistor at

    2. A.
    10 μF
    B.
    100 μF
    C.
    1000 μF
    D.
    1 μF

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  2. In a CE amplifier the dc load line is the same as ac load line when

    3. A.
    ac collector resistance and dc collector resistance are equal
    B.
    ac collector resistance and dc emitter resistance are equal
    C.
    ac collector resistance is very high
    D.
    ac collector resistance is one half of dc collector resistance

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  3. If the output current wave shape of class C circuit has a period of 1 μs and a pulse width of 0.006 μs, the duty cycle is

    4. A.
    6%
    B.
    0.6%
    C.
    0.006%
    D.
    0.06%

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  4. Which configuration is suitable for impedance matching?

    5. A.
    CB
    B.
    CE
    C.
    CC
    D.
    CB and CE

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  5. A BJT is said to be operating in saturation region if

    6. A.
    both junctions are reverse biased
    B.
    both junctions are forward biased
    C.
    base emitter junction is forward biased and base collector junction is reverse biased
    D.
    base collector junction is forward biased and base emitter junction is reverse biased

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  6. If an amplifier with gain of - 100 and feedback of β = - 0.1 has a gain change of 20% due to temperature the change in gain of the feedback amplifier will be

    7. A.
    0.02%
    B.
    2%
    C.
    0.1%
    D.
    0.01%

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  7. In figure the cut in voltage of diode is 0.7 V and its bulk resistance is 20 Ω. The peak value of circuit current of during positive and negative half cycles are

    8. A.
    10 mA and zero
    B.
    9.12 mA and zero
    C.
    9.3 mA and zero
    D.
    zero and 9.12 mA

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  8. A voltage gain of a CE amplifier connected in collector to base configuration is 50. Collector to base resistor RF = 1 kΩ, RC = 4Ω, the O/P resistance R0 =?

    9. A.
    800 Ω
    B.
    813 Ω
    C.
    817 Ω
    D.
    819 Ω

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  9. A voltage multiplier circuit, using diodes and capacitors is suitable for

    10. A.
    high voltage high current device
    B.
    high voltage low current device
    C.
    low voltage low current device
    D.
    low voltage high current device

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  10. In a CE amplifier the ac emitter resistance

    11. A.
    is zero
    B.
    is high
    C.
    is very high
    D.
    may have any value

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