DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of opposite polarity should track each other All of these Brush position has no effect on the commutator grooving The brushes of same polarity should track each other The brushes of opposite polarity should track each other All of these Brush position has no effect on the commutator grooving The brushes of same polarity should track each other ANSWER DOWNLOAD EXAMIANS APP
DC Generators The yoke of a dc machine is made of Soft iron Aluminum Silicon steel Cast steel Soft iron Aluminum Silicon steel Cast steel ANSWER DOWNLOAD EXAMIANS APP
DC Generators As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately 25 percent 40 percent 10 percent 5 percent 25 percent 40 percent 10 percent 5 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators Small dc machines generally have _____ poles. 2 4 6 8 2 4 6 8 ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. machine stray loss is the sum of Shunt field copper loss and mechanical loss Iron loss and mechanical loss Total copper loss and mechanical loss Armature copper loss and iron loss Shunt field copper loss and mechanical loss Iron loss and mechanical loss Total copper loss and mechanical loss Armature copper loss and iron loss 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 Will always be 250 V None of these May be greater or less than 250 V Will be less than 250 V Will always be 250 V None of these May be greater or less than 250 V ANSWER DOWNLOAD EXAMIANS APP
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