WorksheetsCertified Plant Mechanic Exam Questions
Total questions: 25
Worksheet time: 13mins
Which part of a lathe supports and rotates the workpiece?
Chuck
Tailstock
Headstock
Bed
Which operation is used to reduce the diameter of a workpiece in lathe?
Boring
Facing
Turning
Drilling
What is the purpose of a tailstock in a lathe?
To support long workpieces
To hold the tool
To adjust speed
To measure length
Which of the following tools is used for internal threading?
External threading tool
Taps
Reamers
Internal threading tool
The feed in lathe is expressed in:
mm/rev
mm/min
inches/rev
inches/min
Which type of milling cutter is used for cutting keyways?
End mill
Face mill
Ball mill
Slot drill
In a horizontal milling machine, the cutter is mounted on the:
Table
Column
Arbor
Base
What is climb milling?
Milling with the cutter rotation
Milling against the cutter rotation
Milling with a larger cutter
Milling with a smaller cutter
Which part controls the vertical movement of the milling machine table?
Handwheel
Vertical feed handle
Power feed
Table lock
A face milling operation uses which type of cutter?
End mill
Face mill
Slot drill
Ball mill
In a shaper, the tool moves in which motion?
Rotating
Reciprocating
Circular
Linear
The quick return mechanism is used to:
Increase cutting speed
Save return time
Reduce tool wear
Improve accuracy
Which of the following is NOT a part of the shaper machine?
Table
Ram
Tailstock
Clapper box
Which stroke in a shaper does the cutting action occur?
Return stroke
Forward stroke
Idle stroke
Cutting stroke
The main purpose of the table in a shaper is to:
Hold and clamp the workpiece
Support the tool
Adjust the height
Control the speed
The planer differs from the shaper in that:
Workpiece moves, tool stationary
Tool moves, workpiece stationary
Both move simultaneously
None of the above
Planer machines are best suited for:
Curved surfaces
Large flat surfaces
Small intricate parts
Thin sheets
The tool in a planer is mounted on the:
Table
Cross rail
Bed
Column
Which of the following is NOT an advantage of a planer over a shaper?
Higher production speed
Ability to handle larger workpieces
Better surface finish
More versatile
Which motion is responsible for feeding in a planer?
Vertical movement
Crossfeed movement of tool
Rotational movement
Linear movement
In arc welding, the heat is produced by:
Electric arc
Gas flame
Friction
Chemical reaction
Which of the following is a consumable electrode?
Tungsten electrode
Carbon electrode
Mild steel rod
Copper electrode
In Shielded Metal Arc Welding (SMAW), the coating of the electrode provides:
Shielding gas and slag
Only shielding gas
Only slag
No protection
What is the primary cause of porosity in welds?
Moisture
Trapped gas
Poor technique
Wrong materials
Which of the following PPE is mandatory for welding?
Safety glasses
Welding gloves
Ear protection
Dust mask
