For the truth table of the given figure Y = A + B + C A + BC A B Y = A B C + A B

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Digital Electronics See What Others Are Saying!

Question
For the truth table of the given figure Y =
Options
A. A + B + C
B. A + BC
C. A
D. B

Correct Answer

B

Explanation

Y = A B C + A B C + AB C + A B C = A B (C + C) + A B (C + C) = A B + AB = B(A + A) = B.

More questions

4. Loss angle of a good quality cable is about
Options
A. 1�
B. 30�
C. 70�
D. 90�

6. Which one of the following is true for EM wave propagation through rectangular waveguide of cross-section 2a x a
Options
A. critical wavelength for TE₁₀ mode is the same as that for TE₀₂ mode
B. critical wavelength for TE₁₀ mode is one half of that for TE₁₀ mode
C. critical wavelength for TE₁₀ mode is the same as that for TM₁₀ mode
D. critical wavelength for TE₁₀ mode is double that for TE₀₁mode

7. Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is
Options
A. 3
B. 4
C. 5
D. 6

8. The first and second subscripts in models of circular waveguides depict
Options
A. the number of full sine wave variations in circumference in direction and Bessel function variations in radial direction respectively
B. the Bessel function variations in radial direction and the number of full sine wave variations in circumference direction respectively
C. the Bessel function variations in circumference direction and number of full sine wave variations in radial direction respectively
D. none of the above

9. Which of the following is not a travelling wave?
Options
A. e = E_m sin (?x - ?t)
B. e = E_m cos (?x - ?t)
C. e = E_m sin (?t - ?x)
D. e = E_m sin (?x)

10. Consider a loss less antenna with a directive gain of + 6 dB. If 1 mW of power is fed to it the total power radiated by the antenna will be
Options
A. 4 mW
B. 1 mW
C. 7 mW
D. 1/4 mW

Comments

There are no comments.

More in Electronics and Communication Engineering: