Electrical Machines The emf induced in the dc generator armature winding is AC and DC DC AC None of these AC and DC DC AC None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is 2,3 2, 3, 5 1, 4, 5 1, 4 2,3 2, 3, 5 1, 4, 5 1, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a positive finite value a finite negative value ∞ 0 a positive finite value a finite negative value ∞ 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron loss in a transformer mainly occurs in iron made tank of transformer. steel core in transformer. transformer insulating oil. winding of transformer. iron made tank of transformer. steel core in transformer. transformer insulating oil. winding of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for differential compound motors. shunt motors. series motors. separately excited motors. differential compound motors. shunt motors. series motors. separately excited motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer core is made up of a silicon steel laminations which has maximum flux density 1 Tesla. If it was cold rolled grain oriented its flux density increases to 1.6 Tesla. What is the saving in core size or area due to cold rolled grain oriented process? 68% 38% 60% 40% 68% 38% 60% 40% ANSWER DOWNLOAD EXAMIANS APP
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