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Theory of Automata MCQs with Answers

Practice important Theory of Automata MCQs with answers and explanations.

Multiple Choice Questions

Q181: The closure of an FA is similar to which operation?
  • A: Concatenation of FA with itself
  • B: Union of FAs
  • C: Intersection of FAs
  • D: Complementation of FAs
View Answer
A

Q182: In the example, what does the FA for r1 = (a+b)(a+b)* accept?
  • A: Any string of a and b with 'a' as second letter
  • B: Any string of a and b
  • C: Strings with at least one 'b'
  • D: Strings that start with 'a'
View Answer
B

Q183: In the transition diagram for the FA corresponding to r*, what does z1 represent?
  • A: Initial state
  • B: Final state
  • C: Non-final state
  • D: Intermediate state
View Answer
A

Q184: The FA for r = (a+b)*b accepts which of the following languages?
  • A: Strings with 'b' as the last letter
  • B: Strings with 'a' as the first letter
  • C: Strings of even length
  • D: Strings of odd length
View Answer
A

Q185: The method of building an FA for r1r2 is based on which principle?
  • A: Concatenation of corresponding languages
  • B: Union of languages
  • C: Intersection of languages
  • D: Complementation of languages
View Answer
A

Q186: What is the total number of possible combinations of states for FA1 and FA2?
  • A: 6
  • B: 5
  • C: 4
  • D: 7
View Answer
A

Q187: How does the FA for r* differ from the original FA?
  • A: It includes the initial state as a final state
  • B: It removes transitions
  • C: It adds new states
  • D: It ignores original final states
View Answer
A

Q188: The transition table for FA3 shows possible states based on which input?
  • A: A or B
  • B: A only
  • C: B only
  • D: Any alphabet
View Answer
A

Q189: What type of automata is being described in Kleene’s theorem part III?
  • A: Finite Automata
  • B: Pushdown Automata
  • C: Turing Machine
  • D: Mealy Machine
View Answer
A

Q190: In the concatenation method of FAs, what happens when the final state of FA1 is reached?
  • A: The initial state of FA2 is included
  • B: The process stops
  • C: FA1 is reset
  • D: FA2 is ignored
View Answer
A

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