Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 7.8 Ω 1.3 Ω 13 Ω 78 Ω 7.8 Ω 1.3 Ω 13 Ω 78 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. Smaller than Greater than About the same as None of the listed here Smaller than Greater than About the same as None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? Low hysteresis loss High permeability High thermal conductivity Mechanical strength Low hysteresis loss High permeability High thermal conductivity Mechanical strength ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Moisture Odour Gases Sludge Moisture Odour Gases Sludge ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Voltage Current Power Frequency Voltage Current Power Frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 50 per cent 100 per cent 25 per cent 98 per cent 50 per cent 100 per cent 25 per cent 98 per cent ANSWER DOWNLOAD EXAMIANS APP
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