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A 100-kW, 230-V shunt generator has Ra = 0.05 and Rf = 57.5 . If the generator operates at rated voltage, calculate the induced voltage at (a) full load, and (b) one-half full load. Neglect brush-contact drop.
Calculate the current flow in 30Ω resistor for the circuit in figure using Thevenin's Theorem.
Q. A rotating electric machine with uniform air gap has a cylindrical rotor winding with inductance L 2 =1 H and a stator winding with inductance L 1 =3H. Themutual inductance va
Q. Explain the operation of oscillators. Oscillator is a circuit that changes dc energy from the power supply into ac energy. An amplifier provided with a positive feedback bec
What''s hysteresis ?
(a) A wye-connected generator is to be designed to supply a 20-kV three-phase line. Find the terminal line-to-neutral voltage of each phase winding. (b) If the windings of the g
Q. Basic elements of a digital communication system? Figure illustrates the basic elements of a digital communication system. For each function in the transmitting station, th
A four-pole, three-phase, wound-rotor induction machine is to be used as a variable-frequency supply. The frequency of the supply connected to the stator is 60 Hz. (a) Let the r
can i use steplaizer with capisetor step up valtage
Q. Consider two 1-C charges separated by 1 min free space. Show that the force exerted on each is about one million tons.
Briefly Explain i. Importance of thermal diffusivity. ii. Describe the laws governing Heat Transfer. iii. Differentiate between Heat Transfer and Thermodynamics iv. Des
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