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ECE :: Network Analysis and Synthesis

  1. The resistance of human body is about

  2. A.
    5000 Ω
    B.
    2000 Ω
    C.
    1000 Ω
    D.
    200 Ω

  3. At half power frequencies the current in R-L-C series circuit is __________ times current at resonance

  4. A.
    1/3
    B.
    1/4
    C.
    1/2
    D.
    1/2

  5. In figure, V reads 45V. Then I =

  6. A.
    10.1 A
    B.
    13.3 A
    C.
    16.1 A
    D.
    19.4 A

  7. A capacitor behave to d.c. as

  8. A.
    short-circuit
    B.
    an open-circuit
    C.
    it behaves to a.c.
    D.
    none of these.

  9. For the time domain response shown in figure the pole

  10. A.
    lies in left half plane
    B.
    lies in right half plane
    C.
    lies at origin
    D.
    may be complex or imaginary

  11. A system described by the following differential equation is initially rest for input x(t) = 2 u(t), the output y(t) is

  12. A.
    (1 - 2e-t + e-2t) u(t)
    B.
    (1 + 2e-t + 2e-2t) u(t)
    C.
    (0.5 + e-t + 1.5e-2t) u(t)
    D.
    (0.5 + 2e-t + 2e-2t) u(t)

  13. In a minimum function

  14. A.
    the degree of numerator is higher than that of denominator
    B.
    the degree of numerator is lower than that of denominator
    C.
    the degree of numerator and denominator are equal
    D.
    the denominator is a constant

  15. In a series circuit with fixed R and variable XL, the current locus lies in the fourth quadrant.

  16. A.
    True
    B.
    False

  17. A parallel connection of circuit is at below resonance circuit behave as

  18. A.
    RC circuit
    B.
    RL
    C.
    RLC
    D.
    resistive only

  19. Assertion (A): In figure the coefficients , n = 1, 2, ... and bn = 0

    Reason (R): The periodic function is symmetrical about t = T and t = T/2.

  20. 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