Transformers A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is 25 0.4 0.2 5 25 0.4 0.2 5 ANSWER DOWNLOAD EXAMIANS APP
Transformers The core type transformer provides _______ Lesser average length per turn Much longer magnetic path None of the listed here Shorter magnetic path Lesser average length per turn Much longer magnetic path None of the listed here Shorter magnetic path ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load? 880 V 88 V 7.3 V 73 V 880 V 88 V 7.3 V 73 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Losses are small Iron core is used Applied voltage and frequency are constant Leakage flux is small Losses are small Iron core is used Applied voltage and frequency are constant ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Buchholz relay All of these Overcurrent protection Overfluxing protection Buchholz relay All of these Overcurrent protection Overfluxing protection ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 65% 95 % 75% 85% 65% 95 % 75% 85% ANSWER DOWNLOAD EXAMIANS APP
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