| 1. | If the input and output of a NOT gate is shorted, then output will be ? | |
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0
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1
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a pulse
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indeterminant
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Report Question| 2. | Which of the following are universal gates, 1. NAND 2. NOR 3. XOR Select the correct answer from the codes given below ? | |
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1 and 2 only
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1 and 3 only
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2 and 3 only
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1, 2 and 3
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| 3. | The following operation is associative ? | |
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NAND
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NOR
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Both NAND and NOR
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EX-OR
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| 4. | In exclusive OR gate, when output is zero the inputs are ? | |
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0,1
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1,0
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1,1
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1, x
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| 5. | If the output of a logic gate is '1' when all its inputs are at logic '0', the gate is either ? | |
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a NAND or a NOR
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an AND or an EX-NOR
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an OR or a NAND
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an EX-OR or an EX-NOR
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| 6. | Two Boolean variables FLAG 1 and FLAG 2 are assigned values FALSE and TRUE respectively. Which one of the following expressions is valid and has a True value ? | |
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FLAG 1 AND FLAG 2
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FLAG 1< FLAG 2
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FLAG 1 OR FLAG 2
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FLAG 1 > FLAG 2
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| 7. | A+ A B is equal to ? | |
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A+B
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A+B
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A
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A+1
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| 8. | AND operation of (79)10 and (-56)10 results in ? | |
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50 H
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48 H
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42 H
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08 H
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| 9. | The idempotent law of Boolean algebra says that ? | |
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x+y = 1
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x + x = x
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x+y = x
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x(x + y) = x
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| 10. | An X-OR gate can be converted into an inverter ? | |
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permanently connecting one input to 1
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permanently connecting both inputs to 1
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permanently connecting one input to 0
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permanently connecting both inputs to 0
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