Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 350 210 900 450 350 210 900 450 ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. About the same as Smaller than Greater than None of the listed here About the same as Smaller than Greater than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ None of the listed here Remians unchanged Is decreased Is increased None of the listed here Remians unchanged Is decreased Is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.018 0.18 18 5.5 0.018 0.18 18 5.5 ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum load that a power transformer can carry is limited by its voltage ratio dielectric strength of oil temperature rise copper loss voltage ratio dielectric strength of oil temperature rise copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 200 W 100 W 400 W None of the listed here 200 W 100 W 400 W None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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