DC Motors Small dc motors up to 5 HP usually have 4 poles 2 poles 6 poles 8 poles 4 poles 2 poles 6 poles 8 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors The rheostatic speed control method is very Unsuitable for rapidly changing loads Economical Efficient Suitable for getting speeds above the normal Unsuitable for rapidly changing loads Economical Efficient Suitable for getting speeds above the normal ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will remain almost/constant The speed will increase abruptly The speed will increase in proportion to reduction in load The speed will reduce The speed will remain almost/constant The speed will increase abruptly The speed will increase in proportion to reduction in load The speed will reduce ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will stop The armature may burn The motor will run noisy The motor will continue to run The motor will stop The armature may burn The motor will run noisy The motor will continue to run ANSWER DOWNLOAD EXAMIANS APP
DC Motors The maximum end play of a motor is about 0.4 mm 6 mm 2 mm 10 mm 0.4 mm 6 mm 2 mm 10 mm ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Low cost Wide speed range Stability High starting torque Low cost Wide speed range Stability High starting torque ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS