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ECE :: Network Analysis and Synthesis

  1. If the transfer function has zeros only on jω axis or in left half plane, it is a minimum phase function.

  2. A.
    True
    B.
    False

  3. In a 5.6 ohms, ± 10% carbon composition resistor, the colour of the third strip from extreme left is

  4. A.
    golden
    B.
    silver
    C.
    green
    D.
    black

  5. Assertion (A): Most of magnetic circuits have an air gap.

    Reason (R): An air gap has high reluctance.

  6. A.
    Both A and R are true and R is correct explanation of A
    B.
    Both A and R are true and R is not the correct explanation of A
    C.
    A is true but R is false
    D.
    A is false but R is true

  7. The total lumens emitted by a source of 1 candle are

  8. A.
    0.4 p
    B.
    4 p
    C.
    2 p
    D.
    8 p

  9. In an electrochemical process the mass of material deposited at an electrode is proportional to

  10. A.
    time for which current is passed
    B.
    magnitude of current
    C.
    electric charge through the electrolyte
    D.
    none of the above

  11. The opposition of an inductor to current flow

  12. A.
    depends only on the resistance of the coil
    B.
    depends on the magnitude of the applied voltage
    C.
    varies directly with frequency
    D.
    varies inversely with frequency

  13. In a highly capacitive circuit the

  14. A.
    apparent power is equal to the actual power
    B.
    reactive power is more than the apparent power
    C.
    reactive power is more than the actual power
    D.
    actual power is more than its reactive power

  15. In ac circuits maximum power is delivered to a load if load impedance is conjugate of source impedance.

  16. A.
    True
    B.
    False

  17. In a series R-L-C circuit at the resonant frequency the

  18. A.
    current is maximum
    B.
    current is minimum
    C.
    impedance is maximum
    D.
    voltage is maximum

  19. The transfer function H(s) of a system is given by Given that understeady state conditions, the sinusoidal I/P and 0/P are respectively x(t) = cos 2t and y(t) = cos (2t + Φ), then the angle Φ will be

  20. A.
    45°
    B.
    C.
    -45°
    D.
    -90°