Match List-I with List-II and select the correct answer using the codes given below the lists.List - I List - II J. Single-plate clutch 1. Scooters K. Multi-plate clutch 2. Rolling mills L. Centrifugal clutch 3. Trucks M. Jaw clutch 4. Mopeds
Clutch Matching Explanation
This question requires matching different types of clutches with their common applications. Let's break down each type of clutch and its typical use case, aligning with the provided correct answer.
Understanding the Clutch Types and Applications
We need to match the items in List-I with the items in List-II:
- List-I: Clutch Types
- List-II: Applications
Detailed Matching Analysis
Let's analyze the pairings based on the provided correct answer (J - 3, K - 1, L - 4, M - 2):
1. J. Single-plate clutch matched with 3. Trucks
- Single-plate clutches are the most common type, using a single friction disc.
- They are widely used in manual transmission vehicles, including heavy-duty ones like trucks, due to their simplicity and effectiveness in transmitting engine power.
2. K. Multi-plate clutch matched with 1. Scooters
- Multi-plate clutches use multiple friction plates, allowing for higher torque transmission within a smaller space compared to single-plate clutches.
- While more commonly found in motorcycles, especially performance bikes, the provided answer pairs them with scooters. Some automatic scooters or high-performance models might utilize multi-plate configurations.
3. L. Centrifugal clutch matched with 4. Mopeds
- Centrifugal clutches operate automatically based on the engine's rotational speed (RPM). They engage as the engine speeds up and disengage as it slows down.
- This automatic engagement is ideal for simpler vehicles like mopeds and also scooters, eliminating the need for manual clutch operation.
4. M. Jaw clutch matched with 2. Rolling mills
- Jaw clutches are positive engagement clutches, meaning they lock together mechanically. They are used for applications requiring a direct, non-slip connection that can be engaged or disengaged intentionally.
- They are suitable for heavy machinery where precise engagement is needed, such as in rolling mills or industrial equipment for starting/stopping specific sections.
Summary Table
Here's a summary of the matches:
| List-I Item | Description | List-II Item | Application | Match |
|---|---|---|---|---|
| J | Single-plate clutch | 3 | Trucks | Correct Match |
| K | Multi-plate clutch | 1 | Scooters | Correct Match (as per provided answer) |
| L | Centrifugal clutch | 4 | Mopeds | Correct Match |
| M | Jaw clutch | 2 | Rolling mills | Correct Match |
Therefore, the correct combination is J-3, K-1, L-4, M-2.
Important Questions from Friction Clutches
Which of the following statement is CORRECT about the dry clutch?
- In a multiple disc clutch, if there are 4 discs on the driving shaft and 3 discs on the driven shaft, then the number of pairs of contact surfaces will be equal to _______.
In designing a plate clutch, assumption of uniform wear conditions is made because:
A single plate clutch has outer and inner radii 50 mm and 20 mm respectively. An axial clamping force required to engage the clutch is 2 kN and coefficient of friction between liner material is 0.4, the torque carrying capacity of the clutch using uniform wear theory is
The total normal force (F) acting on the area of contact of disc clutch (Assuming uniform distribution of interface pressure) is:
(Where P is the intensity of pressure, r0 and ri outer and inner diameter of disc respectively)
