DC Generators The insulating material used between the commutator segments is normally Paper Graphite Mica Insulating varnish Paper Graphite Mica Insulating varnish ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine having 10 poles is rotating at a speed of 10 revolution per second. The number of hysteresis loops formed per second is ______ 100 50 150 10 100 50 150 10 ANSWER DOWNLOAD EXAMIANS APP
DC Generators Permeance is the reciprocal of Ampere turns Flux density Resistance Reluctance Ampere turns Flux density Resistance Reluctance ANSWER DOWNLOAD EXAMIANS APP
DC Generators Open circuited armature coil of a D.C. machine is None of these Indicated by a spark completely around the commutator Both of the listed here Identified by the scarring of the commutator segment to which open circuited coil is connected None of these Indicated by a spark completely around the commutator Both of the listed here Identified by the scarring of the commutator segment to which open circuited coil is connected ANSWER DOWNLOAD EXAMIANS APP
DC Generators Small dc machines generally have _____ poles. 4 2 8 6 4 2 8 6 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The open circuit voltage of a compound generator is 250 V. At full load the terminal voltage Will be less than 250 V May be greater or less than 250 V None of these Will always be 250 V Will be less than 250 V May be greater or less than 250 V None of these Will always be 250 V ANSWER DOWNLOAD EXAMIANS APP