Electrical Engineering Questions And Answers :: Dc Motors: part1

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Electrical Engineering : Dc Motors QUESTIONS AND ANSWERS :: part1 : 11 to 15

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.According to Fleming's left-hand rule, when the forefinger points in the direction of the field or flux, the middle finger will point in the direction of

current in the conductor aovtaat of conductor
resultant force on conductor
none of the above
current in the conductor aovtaat of conductor

12.In case of D.C. shunt motors the speed is dependent on back e.m.f. only because

back e.m.f. is equal to armature drop
armature drop is negligible
flux is proportional to armature current
flux is practically constant in D:C. shunt motors

13.A D.C. series motor is that which

has its field winding consisting of thick wire and less turns
has a poor torque
can be started easily without load
has almost constant speed

14.When two D.C. series motors are connected in parallel, the resultant speed is

more than the normal speed
loss than the normal speed
normal speed

15.If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ?

Series motor
Shunt motor
Differentially compound motor
Cumulative compound motor

More Dc Motors QUESTIONS AND ANSWERS available in next pages

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