Question

Match List I with List II. 

Choose the correct answer from the options given below: 
 

• A. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
• B. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
• C. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
• D. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

Hint:

Think of the sequence in a typical DC power supply: AC mains → Transformer (step down voltage) → Rectifier (convert to pulsating DC) → Filter (smooth the DC) → Stabilizer/Regulator (provide constant DC voltage). This helps remember the function of each component.

Answer 1

The Correct Option is B

Let's match each component from List I with its function from List II.
(a) Rectifier: A device that converts alternating current (AC) to direct current (DC). This matches with (ii) "Used to convert a.c. voltage into d.c. voltage".
(b) Stabilizer: A device designed to maintain a constant output voltage, regardless of fluctuations in the input voltage or load. This matches with (iv) "Used for constant output voltage...".
(c) Transformer: A device that transfers electrical energy from one AC circuit to another, either increasing (stepping up) or decreasing (stepping down) the voltage. This matches with (i) "Used either for stepping up or stepping down the a.c. voltage".
(d) Filter: In the context of a power supply, a filter is used to smooth the pulsating DC output from a rectifier, removing the unwanted AC components known as ripples. This matches with (iii) "Used to remove any ripple in the rectified output voltage".
The correct matching is: (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii). This corresponds to option (B).