Electrical Machines The direction of rotation of conductor of a DC motor can be determined by Lenz's law. Fleming's right hand rule. Fleming's left hand rule. Ampere law. Lenz's law. Fleming's right hand rule. Fleming's left hand rule. Ampere law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 20 V zero 40 V 50 V 20 V zero 40 V 50 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in DC Shunt Motor the flux is reduced suddenly to zero, then the armature current will reduce. the speed of motor will be reduced. the motor will come to stop. the motor will attain dangerously high speed. the armature current will reduce. the speed of motor will be reduced. the motor will come to stop. the motor will attain dangerously high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fufuraldehyde analysis is done to determine the condition of lamination on CRGO steel sheet. condition of paper insulation in transformer. condition of oil in transformer. condition of cork gaskets used in transformer. condition of lamination on CRGO steel sheet. condition of paper insulation in transformer. condition of oil in transformer. condition of cork gaskets used in transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be equal to number of rotor slots. an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. either (B) or (C). equal to number of rotor slots. an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. either (B) or (C). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is 123.3 KVA 83.33 KVA 100 KVA 50 KVA 123.3 KVA 83.33 KVA 100 KVA 50 KVA ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS