547. Feed rate in milling operation is equal to
A.RPM
B.RPM x No. of teeth
C.RPM x Feed per tooth X No. of teeth
D.RPM x Feed per tooth x No. of teeth / 2

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548. Depth of finishing cut on milling machine is of the order of
A.0.01 to 0.1 mm
B.0.01 to 0.3 mm
C.0.4 to 0.8 mm
D.0.8 to 1.2 mm

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549. Light duty face mills are used in finishing operations, and compared to heavy duty face mills, these have
A.More no. of teeth
B.Less no. of teeth
C.Same no. of teeth
D.There is no such criterion

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550. Addition of lead, sulphur and phosphorous to low carbon steels helps in achieving
A.Better surface quality
B.Reduction of built up edge
C.Breaking up of chips
D.All of the above

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551. The difference between planer and shaper is that in former case
A.Tool moves over-stationary work
B.Tool is stationary and job reciprocates
C.Tool can machine internal as well as external details
D.Both tool and job reciprocate

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552. The cut per tooth while broaching steel in a key way broach is of the order of
A.0.01 to 0.05 mm
B.0.05 to 0.20 mm
C.0.001 to 0.01 mm
D.0.02 to 0.08 mm

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553. Internal and external threads can be produced on tapered faces conveniently by
A.Universal milling machine
B.Piano miller
C.Planetary milling machine
D.Rotary table milling machine

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