TVET Assessment : Mechanical Components

Fasteners are defined as:

• Devices used only for welding

• Components that only hold liquids

• Permanent joints that cannot be removed

• Hardware that can be installed and removed with tools

Which of the following is NOT a common fastener?

• Nut

• Bolt

• Rivet

• Bearing

The most common types of male fasteners include all EXCEPT:

• Hex head

• Button head

• Ball bearing

• Slotted head

Which screw type has a rounded top and a hexagonal socket drive?

• Shoulder Screw

• Socket Set Screw

• Flat Head Socket Screw

• Button Head Cap Screw

A Flat Head Socket Screw is designed to:

• Sit flush with the surface

• Work only with wooden parts

• Provide decorative appearance

• Rotate freely without tightening

A Socket Head Cap Screw (SHCS) is typically used when:

• Decorative finishing is needed

• A hollow connection is needed

• High torque and strength are required

• Temporary fastening without tools is required

Ball plungers are mainly used for:

• Decorative purposes

• Preventing corrosion

• Cutting metal surfaces

• Locating and positioning components

When tightening screws, the correct rotation is:

• Sideways

• Clockwise

• Anticlockwise

• Both clockwise and anticlockwise simultaneously

To loosen a nut or screw, turn it:

• Clockwise

• Downward

• Anticlockwise

• With extra force clockwise

Which type of pin is used for accurate alignment of mechanical components?

• Split pin

• Dowel pin

• Cotter pin

• Spring pin