Question

Match List I with List II:

List I		List II
A	AC generator	i	Presence of both L and C
B	Transformer	ii	Electromagnetic Induction
C	Resonance phenomenon to occur	iii	Quality factor
D	Sharpness of resonance	iv	Mutual Induction

Choose the correct answer from the options given below:

• A. A-IV, B-III, C-I, D-II
• B. A-II, B-IV, C-I, D-III
• C. A-II, B-I, C-III, D-IV
• D. A-IV, B-II, C-I, D-III

Answer 1

The Correct Option is B

 To match the items in List I with those in List II, let's examine each concept:

1. AC Generator: The working principle of an AC generator is based on Electromagnetic Induction. It involves the conversion of mechanical energy into electrical energy when a conductor moves in a magnetic field. Thus, the correct match is ii. Electromagnetic Induction.
2. Transformer: A transformer operates on the principle of Mutual Induction, where a change in current in one coil induces a voltage in another coil. Therefore, the correct match is iv. Mutual Induction.
3. Resonance phenomenon to occur: An electrical circuit resonates when both inductance (L) and capacitance (C) are present, so the energy oscillates between the inductor and capacitor. This means the necessary condition for resonance is the presence of both L and C. Hence, the correct match is i. Presence of both L and C.
4. Sharpness of resonance: The Quality factor of a resonant circuit measures how sharp or selective the resonance is. A higher quality factor indicates a sharper resonance. Thus, the correct match is iii. Quality factor.

Therefore, the correct matching of List I with List II is:

A	II
B	IV
C	I
D	III

Thus, the correct answer is: A-II, B-IV, C-I, D-III.