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Find the length of a Hertzian dipole that would radiate the same time-average power as the loop antenna of Problem 10.19 for the same current and frequency as in Problem 10.19.
Problem 10.19
A circular loop antenna of radius 1 m in free space carries a uniform current
(a) Calculate the amplitude of the electric field intensity at a distance of 10 km in the plane of the loop.
(b) Calculate the radiation resistance and the time-average power radiated by the loop.
120V, 60 Hz source is connected to a distribution line whose resistance, and inductive reactance is 0.001Ohm, j0.002 Ohm, respectively. Single phase, 100HP, 120V, 0.85 pf. motor and 100Kw, 120V heater are connected in parallel.
A recent study has been carried out concerning radio propagation in railway tunnels. In this study, two railway tunnels of rectangular cross section are considered. Tunnel 1 has transverse dimensions of width a = 8 m
Problems for the basic concepts of Induction motor(IM) taking care of slip and syncronous speed and motor speed and its relationship, A 50 Hz induction motor operates in such a way that the slip is 1.45.
How many 100-W lightbulbs connected to 120V can be used without blowing a 15-A fuse?
Determine the total current flowing through the device if the cross section area is equal to 1 μm ×1 μm.
Calculate transformer efficiency when delivering 20 kVA at 200 V at 0.8 pf lagging
A generator (which may be represented by an emf in series with an inductive reactance) is rated 500MVA, 22kV. Its Y-connected windings have a reactance of 1.1 p.u. Find the ohmic value of the reactance of the windings.
Need an article (+500word) about Star Connection (Y): Three Phase Power, Voltage & Current Values
Describe the problem itself, the background of the problem,short literature review, the importance of solving that problem, etc.
A coaxial line is filled with a very slightly lossy material with a relative dielectric constant of 5 The line would have a characteristic impedance of 100 ohm if it was air-filled. (a) What is the characteristic impedance of the dielectric-filled li..
Need a matlab code for CAMA\CD protocol. there should be 3 channel, 4 source. in this code i want to show how much data packet is transmitted and the number of collision and percentage of data loss.
Propose a change to the scheme that keeps it simple but increases the number of distinct values representable.
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