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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.
2 n -R D/A CONVERTER An n-bit 2 n -R D/A converter needs 2 n resistors of equal value R and (2 n+1 -2) analog switches. A 3-bit 2 n -R D/A converter is shown in Figure, which
Comparison of Induction and Dielectric Heating After studying the induction and dielectric heating followings points may consider for comparison between induction an
to design wheatstone bridge
Generation ofwide-band FM can be done by variousmeans.However, only themost common and conceptually the simplest one, known as the direct method, is considered here. It employs a
Q. Show Applications for Synchronous Motors? With constant-speed operation, power factor control, and high operating efficiency, three-phase synchronous motors are employed in
A synchronous motor has the following parameters per phase. E=2kv, Eo=5kv, X2=3ohms, and I=700amps. Draw the phasor diagram and determine (a) power angle delta, (b) active po
Explain the principle of induction applied in electrical machine
One battery having of eight cells in parallel. Emf and internal resistance of every cells is 1.5V and 0.4Ω. Find the value of current if an external resistance of 5Ω is connected t
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Examples of attribute data relevant for a power utility: Examples of attribute data relevant for a power utility are given below. • Consumer data such as categor
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