Electrical Machines For a DC Shunt Motor having armature resistance of 0.5 Ω and 2A armature current at no-load, when the armature current is changed to 20A at loaded condition the speed is 1000 r.p.m. What is the speed at no-load? 1037.5 r.p.m. 1130 r.p.m. 4575.4 r.p.m. 963.8 r.p.m. 1037.5 r.p.m. 1130 r.p.m. 4575.4 r.p.m. 963.8 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will remains almost constant. The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. The speed will increase gradually. The speed will increase in proportion to reduction in load. The speed will increase abruptly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Winding conductors of an electrical power transformer are mainly insulated by rubber insulation. paper insulation. cotton insulation. wooden insulation. rubber insulation. paper insulation. cotton insulation. wooden insulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? core loss only Copper loss both 1 and 2 windage and friction loss core loss only Copper loss both 1 and 2 windage and friction loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotating magnetic field of 8 pole 50 Hz induction motor is 750 rpm 1500 rpm 3000 rpm 1000 rpm 750 rpm 1500 rpm 3000 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? None of these pure capacitive load pure resistive load pure inductive load None of these pure capacitive load pure resistive load pure inductive load ANSWER DOWNLOAD EXAMIANS APP
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