###### UGC NET CS 2007 June-Paper-2

October 13, 2023###### UGC NET CS 2007 June-Paper-2

October 13, 2023# UGC NET CS 2007 June-Paper-2

Question 7 |

Which of the following expression remove hazard form : xy+zx’ ?

xy+zx’ | |

xy+zx’ | |

xy+zx’+yz | |

xy+zx’+wz |

Question 7 Explanation:

→ A static hazard occurs if a circuit produces incorrect output value momentarily before stabilizing to its correct value.

→ Generally Hazard occurs due to different delays in different paths of the circuit.

→ In the expression xy +zx’ the variable x is in true form in one term(xy) and in complement in other term(zx’).

→ Delay occurs due to the presence of NOT gate.

If input xyz=111 then output is 1.

If input xyz=011 then output stays momentarily in state 0 then settles in state 1.

→ Adding the term yz(select y from xy and z from zx’) eliminates the hazard.

→ Generally Hazard occurs due to different delays in different paths of the circuit.

→ In the expression xy +zx’ the variable x is in true form in one term(xy) and in complement in other term(zx’).

→ Delay occurs due to the presence of NOT gate.

If input xyz=111 then output is 1.

If input xyz=011 then output stays momentarily in state 0 then settles in state 1.

→ Adding the term yz(select y from xy and z from zx’) eliminates the hazard.

Correct Answer: C

Question 7 Explanation:

→ A static hazard occurs if a circuit produces incorrect output value momentarily before stabilizing to its correct value.

→ Generally Hazard occurs due to different delays in different paths of the circuit.

→ In the expression xy +zx’ the variable x is in true form in one term(xy) and in complement in other term(zx’).

→ Delay occurs due to the presence of NOT gate.

If input xyz=111 then output is 1.

If input xyz=011 then output stays momentarily in state 0 then settles in state 1.

→ Adding the term yz(select y from xy and z from zx’) eliminates the hazard.

→ Generally Hazard occurs due to different delays in different paths of the circuit.

→ In the expression xy +zx’ the variable x is in true form in one term(xy) and in complement in other term(zx’).

→ Delay occurs due to the presence of NOT gate.

If input xyz=111 then output is 1.

If input xyz=011 then output stays momentarily in state 0 then settles in state 1.

→ Adding the term yz(select y from xy and z from zx’) eliminates the hazard.

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