Dc Machines Interview Freshers Online Exam Quiz
Dc Machines Interview Freshers GK Quiz. Question and Answers related to Dc Machines Interview Freshers. MCQ (Multiple Choice Questions with answers about Dc Machines Interview Freshers
What is the total ampere conductors/pole (in SI) if 600 lap wound conductors carry 120A current through conductors (P=4)?
Options
A : 18000
B : 9000
C : 4500
D : 13500
What is the total ampere turns/pole (in AT/pole) if 600 lap wound conductors carry 120A current through conductors (P=4)?
Options
A : 18000
B : 9000
C : 4500
D : 13500
If total ampere turns per pole is equal to 6000 A-turns, peak ampere turns for a 4-pole machine is _____
Options
A : 24000
B : 3000
C : 1500
D : 4500
For 6252 AT/Poles, if brush shift is of 2.50 mech. Degrees, what will be the demagnetizing ampere-turns per pole for a 6-pole DC machine?
Options
A : 521
B : 5731
C : 5231
D : 571
For 6252 AT/Poles, if brush shift is of 2.50 mech. Degrees, what will be the cross-magnetizing ampere-turns per pole for a 6-pole DC machine?
Options
A : 521
B : 5731
C : 5231
D : 571
What is the total ampere turns per pole for 720 lap wounded conductors with carrying armature current equal to 625A in a 6-pole machine?
Options
A : 6252 AT/pole
B : 625.2 AT/pole
C : 62.52 AT/pole
D : 8252 AT/pole
A 250 kW, 400 V, 6-pole dc generator has 720 lap wound conductors. Armature current is ____
Options
A : 625A
B : 6.25A
C : 62.5A
D : 0.625A
Flux density in the interpolar region drops down because of ______
Options
A : ATa (peak)
B : Large air gap
C : Absence of magnetic poles
D : Depends on other parameters
Resultant ampere-turn distribution of a DC machine is given by _________
Options
A : ATresultant(?) = ATf (?) – ATa(?)
B : ATresultant(?) = – ATf (?) + ATa(?)
C : ATresultant(?) = -ATf (?) – ATa(?)
D : ATresultant(?) = ATf (?) + ATa(?)
Which axis undergo shifting as a result of armature reaction?
Options
A : GNA
B : MNA
C : Both GNA and MNA
D : Remains fixed
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