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DC Generators

DC Generators
An 8 pole duplex lap winding will have ______ parallel paths.

16
32
8
4

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DC Generators
In a dc generator, armature reaction _____ pole tip.

Strengthns the flux at the leading
Weaknes the flux at the leading
Weaknes the flux at the trailing
None of the listed here

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DC Generators
For a D.C. machines laboratory following type of D.C. supply will be suitable

Rotary converter
Mercury are rectifier
Synchronous motor D.C. generator set
Induction motor D.C. generator set

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DC Generators
In a D.C. generator the critical resistance refers to the resistance of

Armature
Load
Field
Brushes

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DC Generators
Open circuited armature coil of a D.C. machine is

Identified by the scarring of the commutator segment to which open circuited coil is connected
Indicated by a spark completely around the commutator
Both of the listed here
None of these

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DC Generators
The yoke of a dc machine is made of

Silicon steel
Aluminum
Soft iron
Cast steel

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