78751. In a oscillator, a sine wave generator starts at t = 0. It consist of
78752. For a periodic waveform, the power spectral density and correlation function form
78753. Assertion (A): Laplace transform can be used to evalute integrals.Reason (R): Laplace transform can be used to solve differential equations.
78754. What about causality of the system transfer function of a discrete time system
78755. Consider the following statements If ensemble and time averages of a random process are identical, the process is ergodic.If ensemble and time average of a random process are not identical, the process is ergodic.An ergodic process is stationary.A stationary process is necessarily ergodic. Which of the above statements are correct?
78756. (sI - A)-1 is equal to
78757. For a Gaussian process, auto-correlation sequence also implies that
78758. Which one of the following is correct? Energy of a power signal is
78759. Assertion (A): The function kest with both σ and ω positive and s > 0 depicts a sinusoid whose amplitude increases with time. Reason (R): If σ = 0, kest becomes a sinusoid.
78760. What about the stability of system in
78761. Which one most appropriate dynamic system?
78762. An energy signal has G(f) = 10. Its energy density spectrum is
78763. Consider Pole zero diagram as shown, If two Poles are moved in opposite direction towards ω = p /2 and -p /2, the filter will be
78764. In an ac circuit the fundamental component of current wave lags the corresponding voltage wave by 20°. The third harmonic component of current wave lags the corresponding voltage by an angle.
78765. In large capacity air-conditioning applications the following expansion device is used:
78766. Relative humidity of air at the grill of an air-conditioner as compared to the room humidity is:
78767. The Global Warming Potential(GWP)of R134 is:
78768. The solder wire used in electronic soldering melts at:
78769. Select the material used to check the tightness of door gasket of a refrigerator:
78770. The truss is made from seven members, each having a mass of 6 kg/m. Locate the position (,) of the center of mass. Neglect the mass of the gusset plates at the joints.
78771. Locate the center of gravity of the volume generated by revolving the shaded area about the z axis. The material is homogeneous.
78772. Locate the center of gravity of the homogeneous "bell-shaped" volume formed by revolving the shaded area about the y axis.
78773. Locate the centroid of the exparabolic segment of area.
78774. Determine the approximate amount of paint needed to cover the surface of the water storage tank. Assume that a liter of paint covers 2.5 m2. Also, what is the total inside volume of the tank.
78775. Determine the distance to the centroid axis of the beam's cross-sectional area. Neglect the size of the corner welds at A and B for the calculation.
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