Question

   Match List – (Type of gear failure) with List – II (Reasons) and select the correct answer using the codes given below the lists:                                     

List – I                                      

• A. Scoring
• B. Pitting
• C. Scuffing
• D. Plastic flow

List – II

1. Oil film breakage
2. Yielding of surface under heavy loads
3. Cyclic loads causing high surfaces stress
4. Insufficient lubrication

Codes

              A       B         C         D

(a) 2        1          3          4

(b) 2        3          4          1

(c) 4        3          1          2

(d) 4        1          3          2