MEng 154 lecture 6

It reduces friction and do not cause rust but are less efficient in heat removal than water.

• sal soda

• kerosene lubricants

• straight cutting oils

• air

Identify:

• Tower crane

• Overhead crane 

• Jib crane 

• Gantry crane

Continuous stretching under load even if the stress is less than the yield point.

• plasticity

• creep

• elasticity

• ductility

In die casting accurate parts made of steel, what shrinkage allowance in inches per inch is recommended?

• 0.022

• 0.033

• 0.011

• 0.044

The best instrument for measuring thousandths of an inch?

(a)  

Identify:

• Jib crane

• Gantry crane

• Overhead crane

• Tower crane

The material for engine radiator is usually made of:

• Silicon brass

• Admiralty brass

• Yellow brass

• Navy brass

Tool used to check external pipe threads?

(a)  

Tool used to check internal pipe threads.

(a)  

A final operation to improve the polish of a metal and to bring out the maximum luster.

• Finishing 

• Surface grinding

• Broaching 

• Buffing