Question

Match List - I with List - II.

List - I	List - II
A. Thyrite arrester B. Sag Template C. Cable Sheaths D. Circuit Breaker	I. Tower Location II. Cross Bonding III. Restriking voltage IV. Non-linear resistor

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

Hint:

Remember these standard associations: \[ \text{Thyrite arrester} \rightarrow \text{Non-linear resistor} \] \[ \text{Sag template} \rightarrow \text{Tower location} \] \[ \text{Cable sheath} \rightarrow \text{Cross bonding} \] \[ \text{Circuit breaker} \rightarrow \text{Restriking voltage} \]

Answer 1

The Correct Option is B

Concept: This is a matching-type question from power systems and electrical protection. Each item in List-I is associated with a standard electrical engineering application or property. To solve correctly:
• identify the function of each device,
• understand where it is used,
• then match with the correct description.

Step 1: Matching Thyrite arrester. A Thyrite arrester is a lightning arrester that uses: \[ \text{Non-linear resistance} \] The resistance:
• remains very high during normal voltage,
• becomes very low during surge voltage. This protects equipment against lightning surges. Therefore: \[ A \rightarrow IV \]

Step 2: Matching Sag Template. Sag template is used in transmission line design. It helps in:
• determining conductor clearance,
• locating transmission towers,
• checking ground clearance. Hence: \[ B \rightarrow I \]

Step 3: Matching Cable Sheaths. Cable sheaths are associated with: \[ \text{Cross bonding} \] Cross bonding:
• reduces sheath circulating currents,
• minimizes power loss,
• improves cable performance. Therefore: \[ C \rightarrow II \]

Step 4: Matching Circuit Breaker. Circuit breakers are closely related to: \[ \text{Restriking voltage} \] Restriking voltage appears across breaker contacts immediately after arc extinction. Hence: \[ D \rightarrow III \]

Step 5: Writing the complete matching. Thus: \[ A-IV,\quad B-I,\quad C-II,\quad D-III \]

Step 6: Selecting the correct option. Therefore correct option is: \[ \boxed{(2)} \]