Theory of Computation
HNBGU MCA Previous Question Paper 2022
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Differentiate between DFA and NFA with examples.
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Give the recursive definition of regular expression. Find
the language described by the regular expression :
ab*
+ a for a,b ℇ ⅀ (An alphabet)
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Define Moore and Mealy machines with examples.
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Convert the following Mealy machine into an equivalent Moore
machine:
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Write the regular expression, for the language which
contains all the strings over an alphabet ⅀ {0,1} ending
with 011.
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Minimize the following DFA:
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Define context free grammar with example.
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Reduce the following grammar into Chomsky Normal Form:
G
= ({S,A,B,C},{A,B},S,{S->aC, A->aB | bAB, B->b,
C->c})
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Define Pushdown automaton with example. Is it possible to
construct PDA for context free grammar?
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Design a PDA for the language.
L={ww^r | w ℇ
{0,1} and w^r is reverse of w.}
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How to define transition in Turing Machine? Give Id
representation of Turing machine with example.
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Design Turing machine that accepts the language
L
= {a^nb^n|n>=1}
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Write short note on any two of the following:
- Pumping lemma for regular sets.
- Chomsky's hierarchy of grammars.
- ℇ-NFA
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State elimination method for converting Finite Automaton to
Regular Expression
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