In a D.C. generator the critical resistance can be increased by_____________?

Byadmin July 5, 2018August 11, 2021

In a D.C. generator the critical resistance can be increased by_____________?

A. increasing its field resistance
B. decreasing its field resistance
C. increasing its speed
D. decreasing its speed

D.C. Generators

Equilizer rings are required in case armature is_______________?

Equilizer rings are required in case armature is_______________?

A. wave wound
B. lap wound
C. delta wound
D. duplex wound

Read More Equilizer rings are required in case armature is_______________?
D.C. Generators

Welding generator will have____________?

Welding generator will have____________?

A. lap winding
B. wave winding
C. delta winding
D. duplex wave winding

Read More Welding generator will have____________?
D.C. Generators

A D.C. welding generator has____________?

A D.C. welding generator has____________?

A. lap winding
B. wave moving
C. duplex winding
D. any of the above

Read More A D.C. welding generator has____________?
D.C. Generators

To achieve sparkless commutation brushes of a D.C. generator are rockedm ahead so as to bring them?

To achieve sparkless commutation brushes of a D.C. generator are rockedm ahead so as to bring them?

A. just ahead of magnetic neutral axis
B. in magnetic neutral axis
C. just behind the magnetic neutral axis
D. none

Read More To achieve sparkless commutation brushes of a D.C. generator are rockedm ahead so as to bring them?
D.C. Generators

In case of D.C. machine winding, number of commutator segments is equal to______________?

In case of D.C. machine winding, number of commutator segments is equal to______________?

A. number of armature coils
B. number of armature coil sides
C. number of armature conductors
D. number of armature turns

Read More In case of D.C. machine winding, number of commutator segments is equal to______________?
D.C. Generators

If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to______________?

If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to______________?

A. reverse the field connections
B. increase the field resistance
C. increase the speed of primemover
D. check armature insulation resistance

Read More If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to______________?

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