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Transformers
The efficiency of a transformer, under heavy loads, is comparatively low because
iron loss is increased considerably
copper loss becomes high in proportion to the output
secondary output is much less as compared to primary input
voltage drop both in primary and secondary becomes large
iron loss is increased considerably
copper loss becomes high in proportion to the output
secondary output is much less as compared to primary input
voltage drop both in primary and secondary becomes large
Answer
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Related Question
Transformers
The secondary of a current transformer is always short-circuited under operating conditions because it
protects the primary circuit
None of these
is safe to human beings
avoids core saturation and high voltage induction
protects the primary circuit
None of these
is safe to human beings
avoids core saturation and high voltage induction
Answer
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Transformers
The main reason for generation of harmonics in a transformer could be
saturation of core
fluctuating load
mechanical vibrations
poor insulation
saturation of core
fluctuating load
mechanical vibrations
poor insulation
Answer
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Transformers
Transformer breaths in when
load on it increases
load on it decreases
None of these
load remains constant
load on it increases
load on it decreases
None of these
load remains constant
Answer
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Transformers
A transformer transfers electrical energy from primary to secondary usually with a change in ______
Power
Time period
Frequency
Voltage
Power
Time period
Frequency
Voltage
Answer
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Transformers
If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is
0 W
25 W
250 W
2.5 W
0 W
25 W
250 W
2.5 W
Answer
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