DC Generators Carbon brushes are used in a dc machine because _______ Carbon is cheap Carbon lubricates and polishes the commutator Contact resistance is decreased None of the listed here Carbon is cheap Carbon lubricates and polishes the commutator Contact resistance is decreased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be Less than 150 V None of these Greater than 150 V 150 V Less than 150 V None of these Greater than 150 V 150 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The nature of armature winding of a dc machine is decided by Commutator pitch Front pitch Back pitch None of the listed here Commutator pitch Front pitch Back pitch None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The insulating material used between the commutator segments is normally Mica Paper Graphite Insulating varnish Mica Paper Graphite Insulating varnish ANSWER DOWNLOAD EXAMIANS APP
DC Generators For a D.C. machines laboratory following type of D.C. supply will be suitable Rotary converter Induction motor D.C. generator set Mercury are rectifier Synchronous motor D.C. generator set Rotary converter Induction motor D.C. generator set Mercury are rectifier Synchronous motor D.C. generator set ANSWER DOWNLOAD EXAMIANS APP
DC Generators D.C. generator generally preferred for charging automobile batteries is Any of the above Series generator Long shunt compound generator Shunt generator Any of the above Series generator Long shunt compound generator Shunt generator ANSWER DOWNLOAD EXAMIANS APP
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