Elements 17

For large speed ratio and large sprocket utilized it is recommended cast _______ material since the large sprocket teeth are having fewer engagements.

• allowed steel
• high treated steel
• iron
• malleable iron

Roller bearing is utilized on ________ carrying capacity and is better than ball in this condition.

• Heavy load
• high temperature load
• low load
• reserving load

To enhance mechanical properties, fabrication characteristics or any other attributes of steel, some elements are added in melting in specific ranges or minimum aside from carbon and generally termed:

• alloy steel
• AISI steel
• bessemer steel
• SAE steel

Materials is having thermal expansion of about 10 times higher than those of materials and has more heat generated during machining is:

• aluminum
• plastics
• asbestos
• PVC

To hold to minimum, the axial direction of deflection/movement, a separate thrust bearing or preloaded bearing capable of absorbing considerable load is required. The type of bearing to use is a _______ bearing.

• Deep grove ball
• double row angular contract
• tapered roller bearing
• wide type self-aligning

Pulley made of _____ ordinary is 45 to 55% less in weight and 2.35 to 2.70% less slippage compared with ______ pulley

• Iron/steel
• steel/iron
• wood/iron
• wood/steel

To avoid scoring in the bearing surface and the shaft due to _________ contamination/absorption of the fine dirt in the bearing during operation/lubrication the bearing material to apply should have good lubrication.

• Anti-scoring
• resistance conformability
• corrosion resistance
• embeddability

What do impact tests measure?

• Compactness
• Ductility
• Plasticity
• Toughness

Corresponding piping color for alkaline.

• Blue
• Green
• Red
• Violet

Type of gear that transmits power at an angle

• Bevel
• Helix
• Herringbone
• Spur