SDSD - I Mid Objective Paper with Answers (Feb 2012)

I         Choose the correct alternative:

1.         Polarizing elements are                                                                                           [           ]

            A) Δ, ∇                   B) H, L                        C) Both A & B            D) None

2.         Sequential design system depends on                                              [           ]

            A) Present inputs, past history outputs                       B) Present state

C) Only on past output                                               D) None

3.         Multi-valued system has                       inputs                                                       [           ] 

            A) 1 or 0’s                                           B) Only analog system

C) More than two inputs                    D) None

4.         The sequential machines are                                        in nature                             [           ] 

            A)Forward process                 B) Reverse process                  C) Cyclic         D) Anti clock

5.         Clock and oscillators are mainly specified by                                        [           ] 

            A) Duty cycle                                                 B) Duty cycle, frequencies

C) Duty cycle, frequencies, stability               D) Frequency (f)

6.                                             is a step by step process by using graphical method           [           ] 

          A) State indicator       B) State diagram         C) State                      D) None

7.         Up/down counts is also called                            [           ] 

          A) Reversible counter             B) Multi mode            C) Both           D) None

8.         Ring counters are referred to as                                              [           ] 

         A) Johnson                 B) Mobeious               C) Both           D) None

9.         D latch  is a                              storage device                                       [           ] 

         A) Permanent             B) Temporary              C) None                       D) Both

10.       Number of states in state diagram is determined by                   [           ]

 

II        Fill in the blanks:

11.       Digital systems have                              sensitivity to device parameters changes.

12.       Incompatibility occurs at                             .

13.       Encoder for ‘n” inputs, the output code width ‘m’ must satisfy the relation is                        .

14.       Formula for pull up resistor (R) ≤                                    .

15.       Clock skew is a time shift in                                                     .

16.       SN7485/5485 is                               .

17.       Disadvantages of wired logic systems are                                   .

  18.                         is a special hardware device widely used in synchronous FSM.

19.       In moore machine, the output is function of                                       .

20.       FSM is defined as                                               .