Electrical Machines The frame of an induction motor is made of closed grained cast iron. silicon steel. aluminium. stainless steel. closed grained cast iron. silicon steel. aluminium. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by Nr = 120f / p × (1-s). Ns = 120f /p × ( 1 - r). None of these Ns = 120f / p × ( 1 - s ). Nr = 120f / p × (1-s). Ns = 120f /p × ( 1 - r). None of these Ns = 120f / p × ( 1 - s ). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which single phase motor is used for a refrigerator? Split phase. Capacitor run. Repulsion. Universal. Split phase. Capacitor run. Repulsion. Universal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to less than one. very low greater than one. approx to one. less than one. very low greater than one. approx to one. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slot edges in a DC machine are made of Cast iron. Fibre. Silicon steel. Mild steel. Cast iron. Fibre. Silicon steel. Mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ? 1 and 2 1, 2 and 3 2 alone 1 and 3 1 and 2 1, 2 and 3 2 alone 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
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