Electrical Machines Tap changer is generally provided in voltage transformer. power transformer. current transformer. earthing transformer. voltage transformer. power transformer. current transformer. earthing transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine is a both are correct. none of above are correct. convection machine. conduction machine. both are correct. none of above are correct. convection machine. conduction machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by harmonics developed in the motor low voltage supply high loads improper design of stator laminations harmonics developed in the motor low voltage supply high loads improper design of stator laminations ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 1, 3 1, 4 2, 4 2, 3 1, 3 1, 4 2, 4 2, 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is 1, 4 2, 3, 5 1, 4, 5 2,3 1, 4 2, 3, 5 1, 4, 5 2,3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When Flemings right hand rule to find the direction of induced emf, the thumb points towards opposite to the direction of motion of the conductor. direction of flux. direction of motion of the conductor. direction of induced emf. opposite to the direction of motion of the conductor. direction of flux. direction of motion of the conductor. direction of induced emf. ANSWER DOWNLOAD EXAMIANS APP
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