DC Motors Excessive motor vibration is caused by Worn bearings Bent shaft Open armature coil Too much brush tension Worn bearings Bent shaft Open armature coil Too much brush tension ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a _____ motor is practically constant. Series Shunt Cumulatively compounded Differentially compounded Series Shunt Cumulatively compounded Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Battery operated motor Series motor Shunt motor Air motor Battery operated motor Series motor Shunt motor Air motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor should be used for centrifugal pumps? Shunt motor Series motor Either series or shunt None of the listed here Shunt motor Series motor Either series or shunt None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to motor This will make armature to take heavy current, possibly burning it Motor will come to stop This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to motor This will make armature to take heavy current, possibly burning it Motor will come to stop ANSWER DOWNLOAD EXAMIANS APP
DC Motors The resistance of shunt field winding as compared to series field winding is More None of the listed here Less The same More None of the listed here Less The same ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS