A.undercutting
B.sanding
C.burnishing
D.filing
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A.reduce current pulsations
B.reduce brush chatter
C.prevent uneven commutator wear
D.allow greater power generation
A.varying the DC exciter voltage
B.varying the reluctance of the air gap
C.regulating the speed of the prime mover
D.shorting out part of the armature windings
A.a rheostat
B.a balancing coil
C.changing field excitation
D.adjusting the governor settings
A.32~5 amps
B.25 amps
C.1~5 amps
D.30 amps
A.the rudder angle indicator reading
B.the desired rudder angle reading
C.the measured rudder angle reading
D.the intended rudder angle reading
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