Theory of Automata MCQs with Answers
Practice important Theory of Automata MCQs with answers and explanations.
Multiple Choice Questions
Q241: In constructing an FA using Kleene’s theorem, which method is used to combine multiple FAs?
- A: Subtraction
- B: Union
- C: Division
- D: Concatenation
View Answer
B
Q242: What is the primary difference between NFA and FA?
- A: FA has more transitions
- B: NFA allows multiple transitions for the same letter
- C: FA accepts infinite languages
- D: NFA has fewer states
View Answer
B
Q243: Which of the following operations does NOT directly help in constructing FAs from NFAs?
- A: Closure
- B: Concatenation
- C: Division
- D: Union
View Answer
C
Q244: What method is used to convert NFA to FA when dealing with concatenation of FAs?
- A: Introduce new final states
- B: Add transitions between final states
- C: Remove all transitions
- D: Add additional start states
View Answer
B
Q245: Fill in the blank: To convert NFA to FA for concatenation, transitions are introduced connecting each final state of the first FA with the _______ of the second FA.
- A: final states
- B: initial state
- C: middle states
- D: end states
View Answer
B
Q246: Which situation is automatically accommodated if the first FA accepts the Null string?
- A: The second FA must accept the Null string
- B: The resulting FA will not accept any strings
- C: The first FA should not accept any strings
- D: The second FA must reject the Null string
View Answer
A
Q247: What happens when both FAs in a concatenation example accept the Null string?
- A: The resulting NFA will not accept the Null string
- B: The resulting NFA will accept the Null string
- C: The resulting NFA will only accept strings with more than one character
- D: The resulting NFA will reject all strings
View Answer
B
Q248: In constructing an NFA for the union of FAs, which new element is introduced?
- A: A new start state
- B: Additional transitions
- C: More final states
- D: A new intermediate state
View Answer
A
Q249: Fill in the blank: The closure of an FA is constructed by introducing an initial state that is also _______.
- A: non-final
- B: a final state
- C: an intermediate state
- D: a start state
View Answer
B
Q250: What is the main issue with making the initial state final when constructing an NFA for closure?
- A: Acceptance of unwanted strings
- B: Acceptance of only Null string
- C: Loss of transitions
- D: Creation of redundant states
View Answer
A