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Q. A dc series motor operates at 750 r/min with a line current of 100 A from the 250-V mains. Its armature-circuit resistance is 0.15 and itsseries-field resistance is 0.1 . Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A,determine the motor speed at a line current of 25 A at 250V.
Factors Affecting High Commercial Losses Commercial losses in our country occur mainly because of the following reasons: Incorrect assessment of the energy consum
Q. Illustrate the Simplex Transmission? Simplex Transmission Data in a simplex channel is always one way. Simplex channels aren't often used as it is not possible to send ba
What do you understand by solid modeling and wireframe modeling in CAD systems? Explain and compare the both modellings. Describe the following 1. Boundary representation 2.
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Q. The model of an elemental length of a lossy transmission line is shown in Figure (a), along with its parameters, where R is series resistance per unit length, L is serie
Q For a parallel-plate capacitor with plates of area A m 2 and separation d m in air, the capacitance in farads may be computed from the approximate relation Compute the a
Hard magnetic materials are used for making (A) Permanent magnets. (C) Conductors. (B) Insulator. (D)Temporary magnets. Ans: Hard magnetic materials are
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A synchronous motor with a synchronous reactance of 12 ohms is operating with a current of 100 A at unity power factor supplying power to a large compressor. The phasor diagram for
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