Robert Bosch – Test Pattern

Robert Bosch Technical Questions

  1. The unilateral Laplace transform of f(t) is The unilateral Laplace transform of t f(t)


  2. Consider the Amplitude Modulated (AM) signal Ac cosωct + 2 cos ωmt cosωct. For demodulating the signal using envelope detector, the minimum value of Ac should be
    • 2
    • 1
    • 0.5
    • Zero

  3. The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output is
    • the in-phase component
    • the quadrature-component
    • the envelope
    • Zero

  4. What is the output of this C code?
    #include
    void foo(const int *);
    int main()
    {
    const int j = 20;
    printf("%d ", j);
    foo(&j);
    printf("%d", j);
    }
    void foo(const int *j)
    {
    *j = 500;
    }
    • Compile time error
    • 10 20
    • Undefined value
    • 10

  5. The two atomic operations permissible on semaphores are : (choose two)
    • wait
    • Signal
    • None of these
    • Both (a) and (b)

  6. The Boolean function Y= AB+XZ is to be made using only 2-input NAND gates.The minimum number of gates requires is
    • 2
    • 3
    • 5
    • 6