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प्रश्न
Transformer works on ______.
पर्याय
AC only
DC only
Both AC and DC
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उत्तर
Transformer works on AC only
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संबंधित प्रश्न
Explain the construction and working of the transformer.
A transformer converts 240 V AC to 60 V AC. The secondary has 75 turns. The number of turns in primary are _______.
(A) 600
(B) 500
(C) 400
(D) 300
State the principle of transformer working with the help of a diagram
The primary coil of a transformer has 200 turns while the secondary coil has 1000 turns. What type of transformer is this? if the input voltage is 10V, what will be the output voltage?
Describe the construction and working of a transformer with a neat labelled diagram.
A transformer is essentially an a.c. device. It cannot work on d.c. It changes alternating voltages or currents. It does not affect the frequency of a.c. It is based on the phenomenon of mutual induction. A transformer essentially consists of two coils of insulated copper wire having different numbers of turns and wound on the same soft iron core.
The number of turns in the primary and secondary coils of an ideal transformer is 2000 and 50 respectively. The primary coil is connected to a main supply of 120 V and secondary coil is connected to a bulb of resistance 0.6 Ω.
The value of current in the bulb is ______.
Efficiency of transformer is the ratio of ______.
A 12 V, 60 W lamp is connected to 220 V AC via an ideal transformer. Find the primary current.
What does the primary coil draw from the source?
