Electrical Machines The commutator segments of DC machines are made up of copper hard-drawn copper copper alloy brass copper hard-drawn copper copper alloy brass ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up more than 220 V somewhat less than 220 V 6 V 220 V more than 220 V somewhat less than 220 V 6 V 220 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking can be used for All of these series motors. shunt motors. compound motors. All of these series motors. shunt motors. compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Short circuiting is caused in the armature winding due to failure of insulation between two commutator bars. grounding of two or more turns of the same coil. failure of insulation between two turns of coil. any of above. failure of insulation between two commutator bars. grounding of two or more turns of the same coil. failure of insulation between two turns of coil. any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor cannot be started on no load? cumulative compound motors both B and C shunt motors series motors cumulative compound motors both B and C shunt motors series motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increases the design cost All of these increase the maintenance and repair increase the iron loss increases the design cost All of these increase the maintenance and repair increase the iron loss ANSWER DOWNLOAD EXAMIANS APP
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