MGVCL EXAM PAPER (30-07-2021 SHIFT 3) QUIZ

The lathe centres are provided with standard taper known as

Brown and Sharpe taper

Chapman taper

Morse taper

Seller's taper

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In which of the following milling machine, the table can be tilted in a vertical plane by providing a swivel arrangement at the knee?

Universal milling machine

Plain milling machine

Hand milling machine

Universal milling machine

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The example of snag grinding is

Trimming the surface left by spruces and risers on castings

Removing flash on forgings

Grinding the parting line left on castings

All of these

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A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25 mm. The percentage change in diameter is

20.7

41.4

2.07

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The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called

End milling

Down milling

Up milling

Face milling

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The guide-ways are of

Dovetail type

Flat type

Any one of the listed here

V-type

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The actual feed in centerless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and α = Angle of inclination of wheel)

πdn

πd

πdn sinα

πdn cosα

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The operation of machining several surfaces of a workpiece simultaneously is called

Saw milling

Profile milling

Gang milling

Helical milling

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The percentage of carbon in gray cast iron is in the range of

1.25 to 1.75 percent

3 to 4 percent

8 to 10 percent

0.25 to 0.75 percent

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The hardness of a grinding wheel is specified by

Letter of alphabet

Brinell hardness number

Vickers pyramid number

Rockwell hardness number

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