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ECE :: Network Analysis and Synthesis

  1. The factor which will have least effect on the voltage at the load end of a two-wire supply circuit is

  2. A.
    length of the circuit
    B.
    whether supply frequency is 25 Hz or 50 Hz
    C.
    amount of load on the circuit
    D.
    cross-section of the circuit wires

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  3. If a two port network is represented by an equivalent T network, the impedance of shunt arm in terms of ABCD parameters is equal to

  4. A.
    1/C
    B.
    (A - 1)/C
    C.
    1/B
    D.
    (D - 1)/C

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  5. In ZRC (s) = constant at s = 0, the last element in first Foster cauer realization is

  6. A.
    R
    B.
    C
    C.
    R and C in series
    D.
    R and C in parallel

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  7. For a full rectified sine wave, the form factor and peak factor respectively are

  8. A.
    1.57 and 2
    B.
    1.57 and 2
    C.
    1.11 and 1.11
    D.
    1.11 and 2

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  9. For an RC admittance function Y,

  10. A.
    Y(∞) < Y(0)
    B.
    Y(0) < Y(∞)
    C.
    Y (∞) may be lesser or greater than Y(0)
    D.
    Y(∞) = Y(0)

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  11. When ac current is zero, no electrons are in motion.

  12. A.
    True
    B.
    False

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  13. The relation between the apparent power, actual power and reactive power is given by

  14. A.
    Apparent power = actual power + reactive power
    B.
    Apparent power = actual power - reactive power
    C.
    Apparent power = (actual power)2 - (reactive power)2
    D.
    Apparent power = (actual power)2 + (reactive power)2

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  15. Quality factor will be

  16. A.
    a/b
    B.
    b/a
    C.
    b/a
    D.
    ab

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