Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? None of these pure inductive load pure capacitive load pure resistive load None of these pure inductive load pure capacitive load pure resistive load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 940 rpm 1000 rpm 975 rpm 950 rpm 940 rpm 1000 rpm 975 rpm 950 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC shunt generator builds up 230 V when driven in clockwise direction. In case it is driven in anti clockwise direction, other things remaining unchanged, then the voltage build up is some what more than 230 V some what less than 230 V 230 V not possible some what more than 230 V some what less than 230 V 230 V not possible ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will run at very low speed. burn. run at very high speed. start haunting. run at very low speed. burn. run at very high speed. start haunting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Glass. Oil impregnated paper. Vacuum. Mica. Glass. Oil impregnated paper. Vacuum. Mica. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? Back emf is equal to half the applied voltage. Back emf is equal to applied voltage. Back emf is equal to zero. None of above. Back emf is equal to half the applied voltage. Back emf is equal to applied voltage. Back emf is equal to zero. None of above. ANSWER DOWNLOAD EXAMIANS APP
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