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A logical expression Y = A + AB is equal to | |
A. | Y = AB [Wrong Answer] |
B. | Y = AB [Wrong Answer] |
C. | Y = A + B [Wrong Answer] |
D. | Y = A + B [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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⇒ A sinusoidal ac voltage of amplitude 100 V is applied to a rectifying device which offers 10 Ω resistance in forward direction and infinite resistance in backward direction. A moving coil ammeter is also connected in the circuit. The reading of ammeter will be
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⇒ Figure shows the equivalent circuit of resistor. The resistor is non-inductive w
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36 mH
20 mH
28 mH
64 mH
⇒ The signal x(t) = A cos (ω_{0}t + φ) is
energy signal
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0.2
0.5
1
2
⇒ Which of the following statement regarding single-sideband (SSB) transmission is not correct?
In such transmission only or sideband is transmitted, leaving of the other sideband and the carrier
It has gained general acceptance of use in home-entertainment equipment
It is generally reserved for point-to-point communication
The amount of power and bandwidth necessary to be transmitted for a given amount of information are appreciable reduced
⇒ As EM waves travel in free space they get
reflected
refracted
attenuated
absorbed
⇒ The light output of LED varies as (current)^{n}. The value of n is about
0.5
1
1.3
2.1
⇒ The analog signal given below is sampled at 1200 samples per second. m(t) = 2 sin 120 pt + 3 sin 240 pt + 4 sin 360 pt + 5 sin 480 pt + 6 sin 600 pt + 7 sin 720 pt. The folding (maximum) frequency is __________ .
300 Hz
360 Hz
600 Hz
480 Hz
⇒ Consider a baseband binary PAM receiver shown below. The additive channel noise n(t) is whit with power spectral density S_{N}(f) = N_{0}/2 = 10^{-20} W/Hz. The low-pass filter is ideal with unity gain and cutoff frequency 1 MHz. Let Y_{k} represent the random variable y(t_{k}10^{10}
10^{7}
1.414 x 10^{-10}
2 x 10^{-20}
⇒ Which of the following microphones has lowest output impedance?
Moving coil
Ribbon
Crystal
Condenser
⇒ The logic function f(A B, C) = Σm(0, 2, 4, 5, 6) represente
i
i, ii
i, iii
i, ii, iii
⇒ The IF bandwidth of a radar receiver is inversely proportional to
pulse interval
pulse width
PRF
none of the above
⇒ The binary sum of 111010_{2} and 11011_{2} is
1010101_{2}
1011001_{2}
1011101_{2}
1111111_{2}
⇒ In the circuit shown in the fi
only red will glow
only green will glow
both red and green will glow
none will glow
⇒ Frequency shift keying is used mostly in
telephony
telegraphy
radio transmission
none of the above
⇒ Some features of advanced mobile phone service are
- To provide telephone communication to a large number of telephone users within the area of a metropolitan only
- To use minimum amount of frequency spectrum
- To permit hand held as well as vehicle operation of telephone
1 and 2 only
1, 2, 3
1 and 3 only
2 and 3 only
⇒ Laplacian of a scalar function V is
gradient of V
gradient of the gradient of V
divergence of V
divergence of the gradient of V