Q. In the circuit shown below, assume that the comparators are ideal and all components have zero propagation delay. In one period of the input signal 𝑉𝑖𝑛 = 6 sin(𝜔𝑡), the fraction of the time for which the output OUT is in logic state HIGH is Sol: The output represents X-NOR gate. So, the given […]
Q. A voltage amplifier is constructed using enhancement mode MOSFETs labeled M1, M2, M3 and M4 in the figure below. M1, M2 and M4 are n-channel MOSFETs and M3 is a p-channel MOSFET. All MOSFETs operate in saturation mode and channel length modulation can be ignored. The low frequency, small signal input and output voltages
Daily Quiz on Current Affairs 29 August 2023 is very important for Competitive Exams like SSC, Railway, RRB, Banking, IBPS, PSC, UPSC, etc. Our Gkseries team have composed these Current Affairs Quizzes from Newspapers like The Hindu and other competitive magazines.
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Q. The forward path transfer function L(s) of the control system shown in Figure (a) has the asymptotic Bode plot shown in Figure (b). If the disturbance d (t) is given by d(t) = 0.1sin(wt) where w = 5 rad s , the steady-state amplitude of the output y(t) is Sol: as r = 0
Q. A complex function 𝑓(𝑧) = 𝑢(𝑥, 𝑦) + 𝑖 𝑣(𝑥, 𝑦) and its complex conjugate 𝑓∗(𝑧) = 𝑢(𝑥, 𝑦) − 𝑖 𝑣(𝑥, 𝑦) are both analytic in the entire complex plane, where 𝑧 = 𝑥 + 𝑖 𝑦 and 𝑖 = √−1 . The function 𝑓 is then given by Sol: f(z) = u(x,
Q. The function 𝑝(𝑥) is given by 𝑝(𝑥) = 𝐴/𝑥𝜇 where 𝐴 and 𝜇 are constants with 𝜇 > 1 and 1 ≤ 𝑥 < ∞ and 𝑝(𝑥) = 0 for −∞ < 𝑥 < 1. For 𝑝(𝑥) to be a probability density function, the value of 𝐴 should be equal to Sol:
Q. The curve y = f (x) is such that the tangent to the curve at every point (𝑥, 𝑦) has a 𝑌-axis intercept 𝑐, given by 𝑐 = −𝑦. Then, f (x) is proportional to (A) x–1 (B) x2 (C) x3 (D) x4 Ans: x2 Sol: Let the equation of tangent is, y =
Current Affairs is the most important area in all competitive exams. But the difficulty level is very high. That’s why; many aspirants get confused, how to select Current Affairs for Preparation of Competitive Examination? In this Post, Daily Current Affairs 29 August 2023, we have tried to cover each and every point and also included all important facts from
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Q. A signal cos(2p fmt) modulates a carrier cos(2p fct) using the double-sideband-with-carrier (DSBWC) scheme to yield a modulated signal cos(2p fct) + 0.3cos(2p fmt) cos(2p fct) . The modulation index is___________.(Answer should be rounded off to one decimal place) . Sol: The standard equation of AM is
Q. A pitot-static tube is used to estimate the velocity of an incompressible fluid of density 1 kg/m3. If the pressure difference measured by the tube is 200 N/m2, the velocity of the fluid, assuming the pitot-tube coefficient to be 1.0, is m/s. Sol: Given that, density = 1 kg/m3 Pressure difference (ΔP) = 200
