DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of opposite polarity should track each other The brushes of same polarity should track each other All of these Brush position has no effect on the commutator grooving The brushes of opposite polarity should track each other The brushes of same polarity should track each other All of these Brush position has no effect on the commutator grooving ANSWER DOWNLOAD EXAMIANS APP
DC Generators The O. C. C. of a dc generator is also called its_______ characteristic. Performance No load saturation External Internal Performance No load saturation External Internal ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a cummulative compounded generator the shunt and series fields ______ each other. Oppose Sometime aid, sometime oppose Aid None of the listed here Oppose Sometime aid, sometime oppose Aid None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The resistance of armature winding depends on Length of conductor Cross sectional area of the conductor Number of conductors All of the listed here Length of conductor Cross sectional area of the conductor Number of conductors All of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following generating machine will offer constant voltage on all loads? Self-excited generator Level compounded generator All of these Separately excited generator Self-excited generator Level compounded generator All of these Separately excited generator ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following will not prevent a self excited shunt generator from building upto its full voltage? Wrong direction of rotation Open field No residual magnetism Speed too high Wrong direction of rotation Open field No residual magnetism Speed too high ANSWER DOWNLOAD EXAMIANS APP
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