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A single-circuit, three-phase transmission line is composed of Parakeet conductors with flat horizontal spacing of 19.85 ft between adjacent conductors. Determine the characteristic impedance and the propagation constant of the line at 60 Hz and 50° C temperature
A permanent magnet dc motor is delivering zero torque when it runs at 1800 rev/min and has 50 V dc applied to its terminals. The armature resistance is 2.0 ohm. What current will the motor need in order to deliver a torque of 2.0 Nm
A narrow beam of electrons is pointed, in vacuum, directly towards a very small spherical target that carries a negative charge of Q = -2x10-11 C. The initial kinetic energy of an individual electron in the beam is ε0 = 100 eV (1 eV = 1.6x10-19 J)
Assume the resistance of a human person was 500 ohms, if a person was struck by lightning with a peak voltage of 100,000 volts, what was the peak current that would flow through the person
A state government is considering construction of a flood control dike having a life span of 15 years. History indicates that a flood occurs every 5 years, on average, and causes $600,000 in damages on each occasion.
It is proposed to apply 'disturbance feedback control, to the system by the inclusion of a transducer that measures the external temperature and feeds a signal back to the input via a proportional controller of gain H. Determine the required value..
Block diagram reduction technique find closed loop transfer function of the system whose block diagram - determine transfer function using Mason's gain formula and given parameters.
A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. (a) What is the linear attenuation coefficient for this material (b) What is the half-thickness (c) What is the mean-free-path length for 1.25 MeV photons
a) What is the name ofthe company he co-founded. b) How do the annualsales of this company in 2009 compare to the combined value of allof the corn and soybeans produced in Iowa in a typicalyear.
A six pole, 40 kW, 400 V d.c. motor draws 110 A from the supply. The shunt field resistance is 200 Ohm and the armature resistance is 0.5 Ohm. The armature is wave wound with 600 conductors operates at a speed of 1200 rev/min when supplying full l..
Given a high or low pass RC or RL filter, indentify circuit characteristics such as AV, AVdB, AP, APdB, ZT, XT, and delete text at FC.
Sketch the equivalent circuit and phasor diagram for the no-load conditions and, assuming operation is in the step down mode, determine (a)the exciting current; (b)the core loss component of the exciting current; (c)the magnetizing current; (d)the..
Suppose you are designing a power amplifier for a loudspeaker which has an equivalent resistance of 150 . What should be the Thevenin equivalent resistance of the power amplifier in order to maximize the power transfer to the loudspeaker
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