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1. Define the radiation resistance of an antenna.
2. Why is the expression for the radiation resistance of a Hertzian dipole not valid for a linear antenna of any length?
3. Explain why power lines are not effective radiators.
Two lenses of focal length f1 and f2, made from the same glass, are spaced by distance L. The effective focal length of the pair is related to refractive index n by f^(-1) = (n-1)a + (n-1)b - L((n-1)^2)ab
A particle travels along the x-axis with postion ( measured in meters ) as a function of time ( measured in seconds ): x(t) = 5t^2-7t+2. (a) At what time or times is the particle at rest
An Alternator is found to have its terminal voltage on load condition more than that on no load. What is the nature of the load connected?
one group of students made an error by using HCLinstead of H2SO4 to titrate an unknown solution of NaOH. Would this error change the calculated molarity of the NaOH solution.
If L=0.0053nH, C=15µF find the operating frequency of series LC circuit. What factors decides capacitance? Explain using diagram.
Design a FIR linear phase filter by approximating the ideal frequency reponse (H^{d}(e^{jwt})=1, for |w|
If it is assumed that there is no electric field, the magnetic field at a point can be found from the knowledge of forces exerted on a moving test charge for two noncollinear velocities. Explain.
A three-phase generator rated 480 V, 400 kVA is connected to a three-phase transformer rated 3.2 kV Y-grounded/480 V, 200 kVA, with reactance of 10%. The transformer is 100% loaded based on its rating at 0.9 pf leading.
A 700 word essay on business finance information for essay on photo below
How does an RC combination affect the phase plot of an oscillator
Consider the circuit shown in Figure in which the initial inductor current and capacitor voltage are both zero. Write the differential equation for vC(t).
Two resistors are to be combined to form an equivalentresistance of 1000 Ω (or close to it). Readily available are two common resistors rated at 2000 Ω. To ensure the resistors are rated correctly, a studentmeasures the resistors using an ohmmeter an..
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