56) The purpose of the flexible copper pig tail mounted on the brush of the D.C. generator is :

to collect current from the commulator

to facilitate collection of current from the armature conductors

to convey the current from the brushes to the holder

to prevent the brush from flying out under the centrifugal force

Answer is:

to convey the current from the brushes to the holder

DC Generators MCQ - Electrician (Set-1) with Answers

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57) By providing compensating winding in series with armature of a D.C. generator which defect can be prevented ?

Rough commutation

Cross magnetizing effect

Demagnetizing effect

Armature resistance drop effect

Answer is:

Demagnetizing effect

58) Which among the following is the function of the inter poles in a DC generator ?

Neutralisation of statically induced voltage

To make sparkless commutator

To change rough to smooth commutation

All of the above

Answer is:

All of the above

Explanation:

Following are the function of the inter poles in a DC generator
* Neutralization of statically induced voltage
* To make spark-less commutator
* To change rough to smooth commutation

59) Which type of D.C. generator is used for welding generator set ?

D.C. shunt generator

D.C. series generator

D.C. Differential compound generator

D.C. cumulative compound generator

Answer is:

D.C. Differential compound generator

60) Which type of DC generator is used for welding generator set ?

DC series generator

DC shunt generator

DC differential compound generator

DC Cummutative compound generator

Answer is:

DC differential compound generator

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