state gov TSPSC Polytechnic Lecturer Mock Test 2022 Production Engineering (Manufacturing) Metal Casting
Consider the following statements.
1. Complex shapes can be easily produced by using wax patterns.
2. Polystyrene patterns can be reused for making very large patterns.
3. Wood patterns are most popular as they can be used for many different types of casting.
Which of the following statements are correct?
1
1 only
2
1 and 2 only
3
2 only
4
3 only