Q.1
Sequential circuits are represented as
  • finite state machine
  • infinite state machine
  • finite synchronous circuit
  • infinite asynchronous circuit
Q.2
Which of the following attribute is generally used in implementation of sequential circuits?
  • ‘stable
  • ‘length
  • ‘last_event
  • ‘event
Q.3
Which of the following will give the sum of full adders as output?
  • three point major circuit
  • three bit parity checker
  • three bit comparator
  • three bit counter
Q.4
What is the indication of a short to ground in the output of a driving gate?
  • only the output of the defective gate is affected
  • there is a signal loss to all load gates
  • the node may be stuck in either the high or the low state
  • the affected node will be stuck in the high state
Q.5
A stepper motor HDL application must include
  • types and bits
  • sequencers and multiplexers
  • counters and decoders
  • variables and processes
Q.6
Iterative test generation method suits for circuits with
  • no feedback loops
  • more feedback loops
  • few feedback loops
  • negative feedback loops only
Q.7
What does the data signal do in the keypad application?
  • the row and column encoded data
  • the freeze locator data
  • the ring encoded data
  • the ring counter data
Q.8
4 COUNTERS
  • 0 to 2n
  • 0 to 2n + 1
  • 0 to 2n – 1 d) 0 to 2n+1/2
  • All of above
Q.9
Which of the following method is not used to remove the race around condition in a flip flop?
  • using level triggered flip flop
  • using master slave flip flop
  • using edge triggered flip flop
  • all of the above are used to remove the race around
Q.10
Which of the following line is correct for detecting positive edge of a clock?
  • if (clk’event and clk = ‘0’)
  • if (clk’event and clk = ‘1’)
  • if (clk’event or clk = ‘0’)
  • if (clk’event or clk = ‘1’)
Q.11
The stalling of the processor due to the unavailability of the instructions is called as
  • control hazard
  • structural hazard
  • input hazard
  • none of the mentioned
Q.12
Sequential circuit includes
  • delays
  • feedback
  • delays and feedback from input to output
  • delays and feedback from output to input
Q.13
Which constitutes the test vectors in sequential circuits?
  • feedback variables
  • test patterns
  • delay factors
  • all input combinations
Q.14
Outputs are functions of
  • present state
  • next state
  • previous state
  • present and next state
Q.15
Which is the delay elements for clocked system?
  • and gates
  • or gates
  • flip-flops
  • multiplexers
Q.16
Which contributes to the necessary delay element?
  • flip-flops
  • shift registers
  • negative feedback path
  • circuit propagation elements
Q.17
Which method is very time consuming?
  • d-algorithm
  • iterative
  • pseudo exhaustive method
  • iterative test generation
Q.18
What is the complement of X’Y’Z?
  • x+yz
  • x’+y+’z’
  • x+y+z’
  • xyz’
Q.19
The minterm of any expression is denoted by
  • mt
  • m
  • m
  • min
Q.20
Odd parity of word can be conveniently tested by
  • or gate
  • and gate
  • nand gate
  • xor gate
0 h : 0 m : 1 s