GATE PI 2003 | Machining Question 41 | Machine Tools and Machining

GATE PI 2003

MCQ (Single Correct Answer)

-0.6

The purpose of helical grooves in a twist drill is to
$$1.$$ Improve the stiffness
$$2.$$ Save a tool material
$$3.$$ Provide space for chip removal
$$4.$$ Provide rake angle for the cutting edge

Select the correct answer suing the codes given below

$$1$$ & $$2$$

$$2$$ & $$3$$

$$3$$ & $$4$$

$$1$$ & $$4$$

GATE PI 2002

MCQ (Single Correct Answer)

-0.6

A $$31.8MM$$ $$HSS$$ drill is used to drill a hole in cast iron block $$100$$ $$mm$$ thick at cutting speed of $$n20m/min$$ and feed $$0.3min/rev.$$ If the over travel of drill is $$4mm$$ and approach $$9mm,$$ the time required to drill hole is

$$1min$$ $$40s$$

$$1min$$ $$44s$$

$$1min$$ $$49s$$

$$1min$$ $$53s$$

GATE PI 2002

MCQ (Single Correct Answer)

-0.6

Match GROUP - I with GROUP - II GATE PI 2002 Machine Tools and Machining - Machining Question 27 English

$$P - 2,\,\,Q - 1,\,\,R - 4,\,\,S - 3$$

$$P - 3,\,\,Q - 1,\,\,R - 4,\,\,S - 2$$

$$P - 3,\,\,Q - 4,\,\,R - 1,\,\,S - 2$$

$$P - 4,\,\,Q - 3,\,\,R - 1,\,\,S - 2$$

GATE PI 2002

MCQ (Single Correct Answer)

-0.6

A side and face cutter $$125mm$$ diameter has $$10$$ teeth. It operates at a cutting speed of $$14m/min$$ with a table traverse $$100mm/min.$$ The feed per tooth of the cutter is

$$10mm$$

$$2.86mm$$

$$0.286mm$$

$$0.8mm$$

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