Electrical Machines Wave winding is employed in DC machine of high current and low voltage rating. high current and low voltage rating. low current and high voltage rating. low current and low voltage rating. high current and low voltage rating. high current and low voltage rating. low current and high voltage rating. low current and low voltage rating. 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 2,3 1, 4 2, 3, 5 1, 4, 5 2,3 1, 4 2, 3, 5 1, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The mechanical power is developed by a DC motor is maximum when back emf is equal to half of applied voltage. back emf is equal to twice of applied voltage. none of above. back emf is equal to applied voltage. back emf is equal to half of applied voltage. back emf is equal to twice of applied voltage. none of above. back emf is equal to applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Breather is provided in a transformer to provide cold air in transformer. absorb moisture from air entering in transformer. absorb moisture of air during breathing. filter the transformer oil. provide cold air in transformer. absorb moisture from air entering in transformer. absorb moisture of air during breathing. filter the transformer oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which machine is used for battery charging? Compounded DC generator. None of these. DC shunt generator. DC series generator. Compounded DC generator. None of these. DC shunt generator. DC series generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Armature current Ia. Applied voltage. All of these. Field flux. Armature current Ia. Applied voltage. All of these. Field flux. ANSWER DOWNLOAD EXAMIANS APP
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