Advertisements
Advertisements
प्रश्न
State whether true or false. If false, correct the statement.
A transformer can step up direct current.
पर्याय
True
False
Advertisements
उत्तर
False
Correct Statement: A transformer can step up alternating current.
APPEARS IN
संबंधित प्रश्न
Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer.
Draw a labeled diagram of a full wave rectifier circuit. State its working principle. Show the input-output waveforms ?
In an ideal transformer, an output of 66 kV is required when an input voltage of 220 V is available. If the primary has 300 turns, how many turns should the secondary have?
Describe the construction and working of a transformer with a neat labelled diagram.
Name one electrical device which works on Faraday's law of electromagnetic induction principle.
A 60 W load is connected to the secondary of a transformer whose primary draws line voltage. If a current of 0.54 A flows in the load, what is the current in the primary coil? Comment on the type of transformer being used.
An iron rod of 0.2 cm2 cross-sectional area is subjected to a magnetising field of 1200 Am-1. If the susceptibility of iron is 599, then the magnetic flux produced is ______.
What is a transformer?
A 12 V, 60 W lamp is connected to 220 V AC via an ideal transformer. Find the primary current.
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
