Question 430Electricity/Electronics - Assistant Engineer70% to pass
Referring to the illustration of possible brush holder mounting configurations, which figure is the correct method of configuring the brush holders on a DC generator? Illustration EL-0057
AI Explanation
The correct answer is C.
The correct method of configuring the brush holders on a DC generator, as shown in the illustration EL-0057, is configuration C. This configuration ensures that the brush holders are mounted in a symmetrical and balanced manner, which is the proper way to install them on a DC generator. The other configurations shown (A, B, and D) would not be considered correct or recommended for proper brush holder mounting on a DC generator.
Related Questions
#428 Incorrect brush pressure can result in accelerated brush wear on a DC generator. What statement concerning brush pressure is true? #429 As the brushes ride on the commutator of a DC generator, eventually mica ridges will form between the bars causing sparking and chipping of the brushes. When this happens the mica must be undercut. To what depth is the mica undercut? #431 If a DC generator was disassembled during overhaul, it is important that the brush holder rigging be installed in the neutral plane. On larger machines, if the brush rigging and end bells are not match-marked, what is the correct procedure for determining the neutral setting using factory marks? #432 In actual applications, electrical connections associated with 'R1, R2 and R3' of the transmitter to 'R1, R2, and R3' of the indicators shown in figure "C" of the illustration are made by what means? Illustration EL-0092 #433 If coil 'R1-R2-R3' on the transmitter in figure "C" shown in the illustration is turned 30 degrees clockwise, how will the corresponding coils 'R1-R2-R3' on the receivers (indicators) respond? Illustration EL-0092