1. A mortise gauge is a ?

striking tool

planing tool

boring tool

marking tool

Answer: marking tool

Explanation:


2. Aluminium is the best material for making patterns because it is ?

light in weight

easy to work

corrosion resistant

all of these

Answer: all of these

Explanation:


3. The purpose of a riser is to ?

deliver molten metal into the mould cavity

act as a reservoir for the molten metal

feed the molten metal to the casting in order to compensate for the shrinkage

deliver the molten metal from pouring basin to gate

Answer: feed the molten metal to the casting in order to compensate for the shrinkage

Explanation:


4. Riddle is used for ?

smoothing and cleaning out depressions in the mould

cleaning the moulding sand

moistening the sand around the edge before removing pattern

reinforcement of sand in the top part of moulding box

Answer: cleaning the moulding sand

Explanation:


5. When a hole or cavity to be cored is not in line with the parting surface, then a .......... is used ?

horizontal core

vertical core

drop core

balanced core

Answer: drop core

Explanation:


6. The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is ?

less than 0.1 percent

less than 0.3 percent

more than 0.3 percent

any where between 0.1 to 1 percent

Answer: more than 0.3 percent

Explanation:


7. Thread rolling is restricted to ?

ferrous materials

ductile materials

hard materials

none of these

Answer: ductile materials

Explanation:


8. The welding process used to join the ends of two pipes of uniform cross-section, is ?

spot welding

seam welding

projection welding

upset butt welding

Answer: upset butt welding

Explanation:


9. The directional solidification in casting can be improved by using ?

chills and chaplets

chills and padding

chaplets and padding

chills, chaplets and padding

Answer: chills and padding

Explanation:


10. When more volume of acetylene and less volume of oxygen is supplied, then a ............. flame is obtained ?

neutral

oxidising

carburising

none of these

Answer: carburising

Explanation: