Electrical Engineering Questions And Answers :: Dc Generators: part1

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Electrical Engineering : Dc Generators QUESTIONS AND ANSWERS :: part1 : 21 to 25

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

 21.In a four-pole D.C. machine all the four poles are north poles alternate poles are north and south all the four poles are south poles two north poles follow two south poles ANSWER : : alternate poles are north and south Explanation :
 22.According to Fleming's right-hand rule for finding the direction of induced e.m.f., when middle finger points in the direction of induced e.m.f., forefinger will point in the direction of motion of conductor lines of force either of the above none of the above ANSWER : : lines of force Explanation :
 23.While applying Fleming's right-hand rule to And the direction of induced e.m.f., the thumb points towards direction of induced e.m.f. direction of flux direction of motion of the conductor if forefinger points in the direction of generated e.m.f. direction of motion of conductor, if forefinger points along the lines of flux ANSWER : : direction of motion of conductor, if forefinger points along the lines of flux Explanation :
 24.Fleming's right-hand rule regarding direction of induced e.m.f., correlates magnetic flux, direction of current flow and resultant force magnetic flux, direction of motion and the direction of e.m.f. induced magnetic field strength, induced voltage and current magnetic flux, direction of force and direction of motion of conductor ANSWER : : magnetic flux, direction of motion and the direction of e.m.f. induced Explanation :

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