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Digital Electronics and Logic Design MCQs | Page - 25

Dear candidates you will find MCQ questions of Digital Electronics and Logic Design here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Q. 241) The EXCLUSIVE NOR gate is equivalent to which gate followed by an inverter ?

(A) or gate
(B) and
(C) nand
(D) xor
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Q. 242) Which of the following gates is known as coincidence detector ?

(A) and gate
(B) or gate
(C) not gate
(D) nand gate
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Q. 243) A positive AND gate is also a negative

(A) nand gate
(B) nor gate
(C) and gate
(D) or gate
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Q. 244) An OR gate can be imagined as

(A) switches connected in series
(B) switches connected in parallel
(C) mos transistors connected in series
(D) none of these
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Q. 245) Which combination of gates does not allow the implementation of an arbitrary boolean function?

(A) or gates and and gates only
(B) or gates and exclusive or gate only
(C) or gates and not gates only
(D) nand gates only
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Q. 246) The output of NOR gate is

(A) high if all of its inputs are high
(B) low if all of its inputs are low
(C) high if all of its inputs are low
(D) high if only of its inputs is low
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Q. 247) A toggle operation cannot be performed using a single

(A) nor gate
(B) and gate
(C) nand gate
(D) xor gate
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Q. 248) Which table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs ?

(A) function table
(B) truth table
(C) routing table
(D) ascii table
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Q. 249) Which of the following is the fastest logic

(A) ttl
(B) ecl
(C) cmos
(D) lsi
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Q. 250) The digital logic family which has the lowest propagation delay time is

(A) ecl
(B) ttl
(C) cmos
(D) pmos
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