Machinist (Grinder) Level 2_1-30

Cost that is relatively fixed over a small volume or range of activities but is variable over a large range or volume is known as___________.

• step cost
• fixed cost
• marginal cost
• period cost

In grinding process, a negative rake angle always leads to __________ cutting force than what is produced with a cutting point having positive rake angle.

• higher
• lower
• same
• negligible

The given picture depicts:

• Horizontal spindle and reciprocating table
• Vertical spindle and reciprocating table
• Horizontal spindle and rotary table
• Vertical spindle and rotary table

As per IS 2794, diamond having 3 to 5 well defined natural points is termed as ________diamond used for diamond dressing.

• Grade I
• Grade II
• Grade III
• Grade IV

____________ is the process of restoring the shape of grinding wheel when it becomes worn and break away at different points.

• Truing
• Dressing
• Trepanning
• Balancing

The bench-type engine lathe is generally powered by an electric motor, mounted to the bench behind the lathe______________.

• headstock
• tailstock
• carriage
• bed

Identify the following lathe operation:

• Taper Turning
• Profiling
• Straight turning
• Face grooving

Diffusion Annealing is used to___________.

• homogenize the chemistry of material
• increase machinability
• relieve stress
• increase ductility

21-C-30-M-5-V-20 In the above given description of Grinding wheel, C denotes -

• Type of abrasive
• Grain type
• Hardness
• Type of bond

The workpiece revolves around a fixated rigid point and the machined surfaces are concentric to the revolution in _______________.

• Cylindrical grinding
• Centreless grinding
• Internal grinding
• Surface grinding