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Digital Electronics and Logic Design MCQs | Page - 54

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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Mr. Dubey • 51.17K Points
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Q. 531) When a large number of analog signals are to be converted an analog multiplexer is used. In this case most suitable A.D. converter will be

(A) ripple carry counter type
(B) dual stop type
(C) forward counter type
(D) successive approxima tion type
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Mr. Dubey • 51.17K Points
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Q. 532) To build a mod-19 counter the number of flip-flops required is

(A) 3
(B) 5
(C) 7
(D) 9
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Mr. Dubey • 51.17K Points
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Q. 533) The astable multivibrator has

(A) two quasi stable states
(B) two stable states
(C) one stable and one quasi-stable state
(D) none of these
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Mr. Dubey • 51.17K Points
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Q. 534) How many bits are required to encode all twenty six letters, ten symbols, and ten numerals ?

(A) 5
(B) 6
(C) 10
(D) 48
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Mr. Dubey • 51.17K Points
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Q. 535) The functional difference between S-R flip-flop and J-K flip-flop is that J- K flip-flop

(A) is faster than s- r flip-flop
(B) has a feed- back path
(C) accepts both inputs 1
(D) both (a) and (b)
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Mr. Dubey • 51.17K Points
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Q. 536) In a positive edge triggered JK flip-flop, a low J and low K produces

(A) no change
(B) low state
(C) high state
(D) none of thes
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Mr. Dubey • 51.17K Points
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Q. 537) When an inverter is placed between both inputs of an SR flip-flop, then resulting flip-lop is

(A) jk flip-flop
(B) d flip-flop
(C) sr flip-flop
(D) master slave jk flip-flop
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Mr. Dubey • 51.17K Points
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Q. 538) A 2 MHz signal is applied to the input of a J-K lip-lop which is operating in the 'toggle' mode. The frequency of the signal at the output will be

(A) 1 mhz
(B) 2 mhz
(C) 6 mhz
(D) 8 mhz
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Mr. Dubey • 51.17K Points
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Q. 539) The master slave JK lip-flop is effectively a combination of

(A) a sr flip-flop and a t flip- flop
(B) an sr flip- lfop and a d flip-flop
(C) a t flip-flop and a d flip- flop
(D) two d flip- flops
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Mr. Dubey • 51.17K Points
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Q. 540) It is difficult to design asynhronous sequential circuit because

(A) external clock is to be provided
(B) it is more complex
(C) both (a) and (b)
(D) generally they involve stability problem
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