List FOUR hand operated drilling appliances – NABTEB QUESTION
i. Hand drill ii. Portable electric drill iii. Hand feed drill press iv. Back geared upright drill.Define Drilling – NABTEB QUESTION
Drilling is defined as the process or method of creating or originating hole in any of the engineering materials, using the drilling machine and the drill bit.
Name the flames associated with oxy-acetylene welding and state where each is applicable. – NABTEB QUESTION
1. Neutral flame (Equal vol.) Oxygen and Acetylene 2. Carburizing flame (Excess Acetylene) 3. Oxidizing flame (Excess Oxygen) 1. Neutral Flame: The proper mixture of oxygen and Acetylene is used for most welds. 2. Carburizing Flame: A low-temperature flame for touch...
Name FOUR forging tools and state their functions. – NABTEB QUESTION
Forging Tools Uses Set hammer Used in confined places or on small surface Punches This is used for making round or square holes in hot metal Flatter Used for the finishing of flat surfaces Hollow bit tong Used for holding round stock...Products
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