Q1: Which of the following can be manufactured using powder metallurgy techniques?

ANS:D - All 'a', 'b' and 'c'.

All of the following can be manufactured using powder metallurgy techniques:

1. Brake linings: Powder metallurgy techniques can be used to produce brake linings by compacting and sintering powdered metal or metal alloy compositions, often combined with friction materials such as graphite or other additives.
2. Bearings: Bearings can be manufactured using powder metallurgy techniques by compacting and sintering powdered metal compositions to form bearing components such as inner and outer races, cages, and rolling elements.
3. Carbide tool tips: Powder metallurgy techniques are commonly used to produce cemented carbide tool tips by sintering powdered tungsten carbide (WC) or other carbide materials with a metal binder, such as cobalt, to form hard and wear-resistant cutting tool inserts.