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 4.76% 8.85% 2.22% 6.77% 4.76% 8.85% 2.22% 6.77% 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 Motor will come to stop 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 Nothing will happen to motor Motor will come to stop This will make armature to take heavy current, possibly burning it ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? 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 Faraday's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 2.0 0.5 4.0 1.0 2.0 0.5 4.0 1.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. motor which of the following can sustain the maximum temperature rise? Armature winding Commutator Field winding Slip rings Armature winding Commutator Field winding Slip rings ANSWER DOWNLOAD EXAMIANS APP
DC Motors When two dc series motor are commected in parallel, the resultant speed is Normal speed Zero Loss than the normal speed More than the normal speed Normal speed Zero Loss than the normal speed More than the normal speed ANSWER DOWNLOAD EXAMIANS APP
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