Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss? 980 Watt. 1920 Watt. 1960 Watt. 1800 Watt. 980 Watt. 1920 Watt. 1960 Watt. 1800 Watt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 45. 30. 270. 180. 45. 30. 270. 180. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively? shaded, shaded unshaded, unshaded unshaded, shaded shaded, unshaded shaded, shaded unshaded, unshaded unshaded, shaded shaded, unshaded ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Demagnetization effects which of the following? reduction in main field flux reduces the terminal voltage both B and C commutation reduction in main field flux reduces the terminal voltage both B and C commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V DC series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is 5.7 ohms. 2.2 ohms. 6 ohms. 1.9 ohms. 5.7 ohms. 2.2 ohms. 6 ohms. 1.9 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 6 pole lap connected DC generator with 480 conductors has armature resistance of 0.06 Ω. If the conductors are reconnected to from a wave winding other things remaining unchanged, the value of armature resistance will be 0.54 Ω. 0.01 Ω. 0.54 Ω. 0.06 Ω. 0.54 Ω. 0.01 Ω. 0.54 Ω. 0.06 Ω. ANSWER DOWNLOAD EXAMIANS APP
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