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ECE :: Exam Questions Paper

  1. The circuit given below is:

  2. A.
    Band stop filter
    B.
    Band pass filter
    C.
    Oscillator circuit
    D.
    All pass filter

  3. Rank of the matrix:

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

  5. His rather casual remarks on politics __________ his lack of seriousness about the subject.

  6. A.
    masked
    B.
    belied
    C.
    cherish
    D.
    conserve

  7. The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be

  8. A.
    1011
    B.
    1101
    C.
    1100
    D.
    1110

  9. For the power amplifier circuit shown below, the maximum power dissipated by both output transistor is

  10. A.
    9.66 W
    B.
    30.11 W
    C.
    31.66 W
    D.
    33.66 W

  11. The maximum percent overshoot with maximum value of first overshoot as 3.5 V and steady state value as 2.575 V is

  12. A.
    35.92%
    B.
    26.43%
    C.
    57.61%
    D.
    15.24%

  13. Find Vo(t) for the following circuit.
    Data: L = 1 H, C = 1 F, R1 = R2 = 1 Ω and zero initial conditions.

  14. A.
    0 V
    B.
    5 V
    C.
    3 V
    D.
    2 V

  15. An XOR gate with 8 variable is as follows:
    A ⊕ B ⊕ C ⊕ D ⊕ E ⊕ F ⊕ G ⊕ H
    The number of minterms in the Boolean expression is

  16. A.
    255
    B.
    127
    C.
    128
    D.
    256

  17. The figure shown below is designed to act as a constant current source across the load resistor. The β of transistor is 50. What is the value of load current?

  18. A.
    1.96 mA
    B.
    2 mA
    C.
    2.04 mA
    D.
    None

  19. For a given magnetic material operating in linear mode B = 0.06 T. Assume permeability = 51, then magnetization is:

  20. A.
    44836 A/m
    B.
    46834 A/m
    C.
    946 A/m
    D.
    936 A/m