For a D.C. machines laboratory following type of D.C. supply will be suitable___________?

Related Mcqs:

In D.C. generators, the cause of rapid brush wear may be___________?

A. severe sparking B. rough commutator surface C. imperfect contact D. any of the above...

The armature of D.C. generator is laminated to_______________?

A. reduce the bulk B. provide the bulk C. insulate the core D. reduce eddy current loss...

Equilizer rings are required in case armature is_______________?

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

Open circuited armature coil of a D.C. machine is________________?

A. identified by the scarring of the commutator segment to which open circuited coil is connected B. indicated by a spark completely around the commutator C. both A. and (b) D. none of the above...

In a D.C. generator:___________________?

A. external resistance = internal char-acteristic – armature reaction B. internal characteristic = magnetisation characteristic – ohmic drop C. external characteristic = magnetisation characteristic – ohmic drop – armature reaction D. magnetisation characteristic = external characteristic...