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RRB Group-D Model Paper 11 with answers for online practice
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© examsnet.com
Question : 15
Total: 100
A device used for converting AC into DC is called
Transformer
Rectifier
Induction coil
Dynamo
Validate
Solution:
A rectifier is a device that converts an oscillating two-directional alternating current (AC) into a single-directional direct current (DC).
Rectifiers can take a wide variety of physical forms, from vacuum tube diodes and crystal radio receivers to modern silicon-based diode.
There are two types of rectifiers: Half wave rectifier and full-wave rectifier.
Half-wave rectifiers work by eliminating one side of the AC, thereby only allowing one direction of current to pass through.
Since half of the AC power input goes unused, half-wave rectifiers produce a very inefficient conversion.
Full-wave rectifier eliminates AC from both the directions hence it is more efficient.
Rectifier mostly used in Power supply, inverters etc.
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