DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will come to stop Nothing will happen to motor This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will come to stop Nothing will happen to motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is 2.22% 8.85% 4.76% 6.77% 2.22% 8.85% 4.76% 6.77% ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Faraday's law Fleming's left hand rule Lenz's law Coloumb's law Faraday's law Fleming's left hand rule Lenz's law Coloumb's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor should be used for centrifugal pumps? Shunt motor Series motor None of the listed here Either series or shunt Shunt motor Series motor None of the listed here Either series or shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To spread out flux for better uniformity To reduce the reluctance of the magnetic path To support the field coils To reduce eddy current loss To spread out flux for better uniformity To reduce the reluctance of the magnetic path To support the field coils To reduce eddy current loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature voltage control of dc motor provides Constant current drive Constant torque drive Constant voltage drive None of the listed here Constant current drive Constant torque drive Constant voltage drive None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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