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In Boolean algebra A + B = Y implies tha...

In Boolean algebra `A + B = Y` implies that :

A

Y is the sum of A and B

B

Y exists when either A or B or both A and B exist

C

Y exists only when both A and B exist

D

Y exists when either A or B exists but not when both A and B exist

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The correct Answer is:
B
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MOTION-LOGIC GATES-EXERCISE - 1
  1. A two inputed XOR gate produces an output high only when its both inpu...

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  2. You are given two circuits as shown in following figure. The logic ope...

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  3. In Boolean algebra A + B = Y implies that :

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  4. Given below are four logic tage symboles. Those for OR, NOR and NAND a...

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  5. The truth table shown below is for which of the following gates :- {...

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  6. When all the inputs of a NAND gate are connected together, the resulti...

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  7. Which of the following pairs are universal gates

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  8. A NAND gate followed by a NOT gate is :-

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  9. The NOR gate is logically equivalent to an OR gate followed by :-

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  10. The output of a two input NOR gate is in state 1 when :-

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  11. Output is LOW if and only if all the inputs are HIGH'. Indicate the lo...

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  12. The truth table given in fig. represent : {:(A,B,Y),(0,0,0),(0,1,1),...

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  13. The output Y of the combination of gates shown is equal to :-

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  14. The diagram of a logic circuit is given below. The output F of the cir...

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  15. The following congiguration of gates is equivalent to

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  16. To get an output 1, the input ABC should be :-

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  17. The output of 2 input gate is 1 only if its inputs are equal. It is tr...

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  18. The circuit shown here is logically equivalent to :-

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  19. A two-input NAND gate is followed by a single-input NOR gate. This log...

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  20. Which of the following will have an output of 1 :-

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