Electrical Machines Basic Online Exam Quiz
Electrical Machines Basic GK Quiz. Question and Answers related to Electrical Machines Basic. MCQ (Multiple Choice Questions with answers about Electrical Machines Basic
The simplex lap winding has the range of winding pitch of _________
Options
A : (-2,2)
B : (-1,1)
C : more than 2
D : less than 1
Consider a dc machine having its armature wound in lap fashion having 12 coils and each resistance 0.1 ohms. If it is measured resistance between two adjacent commutator segments, the result will be _________
Options
A : 0.092 ohms
B : 1.1 ohms
C : 1.8 ohms
D : 0.92 ohms
The commutator pitch for a simplex lap winding is equal to _________
Options
A : 1 and -1
B : 1
C : -1
D : 2 to -2
A 200V dc machine has 4 poles and 40 coils, having simplex lap winding. The number of commutator segments which required in the given machine will be?
Options
A : 40
B : 20
C : 80
D : 26
We can place closed windings in _________
Options
A : ac commutator machine
B : stepper motor
C : ac machine
D : dc machine
Which of the following machines can be used to place open slot winding?
Options
A : ac machine
B : ac commutator machine, ac machine
C : dc machines
D : all of the mentioned
For an electrical machine with C number of coils and P poles, the distance between the coils connected by an equalizer ring is?
Options
A : C/P
B : C/2
C : 2C/P
D : C/2P
DC machines have ________ windings and synchronous machines use ______ windings.
Options
A : closed,open
B : open, closed
C : open, open
D : closed, closed
Commutator segments in a DC shunt machine is equal to the number of _________
Options
A : coil sides
B : turns
C : coils
D : slots
We can employ dummy coils in a DC machine to _________
Options
A : compensate reactance voltage
B : reduce armature reaction
C : provide mechanical balance to the armature
D : improve the waveforms generated inside the commutator
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