Electrical Machines The breakdown torque of a synchronous motor varies as 1/V² applied voltage V 1/V V² 1/V² applied voltage V 1/V V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator runs at 750 rpm and generate an emf of 240 V. The armature is wave wound and has 792 conductors. If the total flux from each pole is 0.0145 Wb. What is the leakage co-efficient? 1.8. 1.5. 1.4. 1.2. 1.8. 1.5. 1.4. 1.2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of core are generally made of carbon. cast iron. silicon steel. stainless steel. carbon. cast iron. silicon steel. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction of an unsaturated DC machine is demagnetising. magnetising. crossmagnetising. none of above. demagnetising. magnetising. crossmagnetising. none of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The results of a slip test for determining direct axis (Xd) and quadrature axis (Xq) reactances of a star connected salient pole alternator are given below Phase values: Vmax = 108 V ; Vmin = 96 V Imax = 12 A ; Imin = 10 A Hence the two reactances will be Xd = 10.8Ω and Xq = 8Ω Xd = 9Ω and Xq = 9.6Ω Xd = 8Ω and Xq = 10.8Ω Xd = 9.6Ω and Xq = 9Ω Xd = 10.8Ω and Xq = 8Ω Xd = 9Ω and Xq = 9.6Ω Xd = 8Ω and Xq = 10.8Ω Xd = 9.6Ω and Xq = 9Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Shunt Motor has disadvantage(s) of not suitable for rapidly changing loads. less expensive. none of above. constant speed. not suitable for rapidly changing loads. less expensive. none of above. constant speed. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS