The equivalent form of the logical expression ABC + A BC + ABC + ABC + AB C is C

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Question
The equivalent form of the logical expression ABC + A BC + ABC + ABC + AB C is
Options
A. C + (A ? B)
B. (A + B + C)(A + B + C)
C. (A + B + C)(A + B + C)(A + B + C)
D. (A + B + C)(A + B + C)(A + B + C)

Correct Answer

(A + B + C)(A + B + C)(A + B + C)

Explanation

This can be solve by using Boolean identity but using k map it will be more easy

The equivalent form of the logical expression ABC + A BC + ABC + ABC + AB C is C + (A ? B) (A + B +

(A + B + C) (A + B + C) (A + B + C).

Exam Questions Papers problems

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1. What is the propagation constant for air filled wave guide with dimensions a = 1.59" and b = 0.795" at 4.95 GHz?
Options
A. 0.6698
B. 0.7698
C. 0.503
D. 0.6598

2. When phase-lag compensation is used in a system, then gain cross over frequency, bandwidth and undamped frequency are respectively
Options
A. Increased, Increased, Increased
B. Increased, Increased, Decreased
C. Increased, Decreased, Decreased
D. Decreased, Decreased, Decreased

3. Consider a unity feedback control system with open-loop transfer function The steady state error of the system due to a unity step input is :
Options
A. zero
B. K
C. 1/K
D. infinite

4. Radiation resistance of an antenna is 54 ? and loss resistance is 6 ?. If antenna has power gain of 10, then directivity is:
Options
A. 9
B. 11.11
C. data not sufficient
D. 10

5. A noiseless 3 KHz channel can transmit binary at the rate __________ .
Options
A. 12000 bps
B. 10000 bps
C. 6000 bps
D. 3000 bps

6. An air-filled rectangular waveguide has dimensions 8cm x 10cm . The phase velocity of guided wave at frequency of 3 GHz for TE₁₀ mode is
Options
A. 1.5 x 10⁸ m/s
B. 5.5 x 10⁸ m/s
C. 3.46 x 10⁸ m/s
D. 0.18 x 10⁷ m/s

7. If x[n] then the sequence x[n] is
Options
A. non-periodic
B. periodic
C. depends on n
D. none of these

8. The impulse response and the excitation function of a linear time invariant causal system are shown in figure (a) and (b) respectively. The output of the system at t = 2 sec is equal to
Options
A. 0
B. 2
C.
D.

9. Consider the following
1. Maximum energy of electrons liberated photoelectrically is independent of light intensity
2. Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.
Options
A. (1) is true and (2) is false
B. (1) and (2) both are true
C. (1) is false and (2) is true
D. (1) and (2) both are false

10. In a flash type ADC, employing 15 comparators resolution with 10 volts reference; is expected to be :
Options
A. 0.625 V
B. 0.656 V
C. 0.525 V
D. insufficient data

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