Electronics and Communication Engineering - Digital Electronics

36. 

What is the normal range of analog input voltage?

A. 0 to 1 V
B. 0 to 5 V
C. 5 to 15 V
D. 15V to 30V

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

37. 

Assertion (A): The propagation delay in ECL is minimum

Reason (R): Transistors used in ECL switch between active and cutoff regions.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is true, R is false
D. A is false, R is true

Answer: Option A

Explanation:

Since saturation is avoided switching speed is high.


38. 

For the design of a sequential circuit having 9 states, minimum number of memory elements required is

A. 3
B. 4
C. 5
D. 9

Answer: Option B

Explanation:

23 = 8 and 24 = 16. Hence minimum of 4 memory elements.


39. 

ICs are

A. analog
B. digital
C. both analog and digital
D. mostly analog

Answer: Option C

Explanation:

Op-amp is an analog IC.


40. 

In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require

A. 1120 bits
B. 2240 bits
C. 33 bits
D. 64 bits

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.