Electrical Machines In which transformer, the tertiary winding is used? Delta - star Star - delta Delta - delta Star - star Delta - star Star - delta Delta - delta Star - star ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding the magnetization characteristics of a dc generator : 1. It represents the variation of field flux with field current. 2. Variation of open-circuit terminal voltage with field current is independent of speed 3. It is non-linear from zero to rated field current 4. It helps to determine the critical field resistance at a given speed 5. It always starts from the origin Which of these statements are correct ? 1, 2 and 5 1 and 4 2, 3 and 4 3 and 5 1, 2 and 5 1 and 4 2, 3 and 4 3 and 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the actual arrangement of series wound generator? Armature winding is in series with load. Armature and field both are in series with the load. Armature and field both are parallel. Armature and field both are connected. Armature winding is in series with load. Armature and field both are in series with the load. Armature and field both are parallel. Armature and field both are connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The working principle of transformer depends on Newtons law. Amperes law. Faradays law of electromagnetic induction. Coulombs law. Newtons law. Amperes law. Faradays law of electromagnetic induction. Coulombs law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be less than 6 V 6 V more than 6 V zero less than 6 V 6 V more than 6 V zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in a conductor rotating in a bipolar field is DC. AC. both of above. None of these DC. AC. both of above. None of these ANSWER DOWNLOAD EXAMIANS APP
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