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Assignment

Kindly answer the question in the box mentioned below:


1.     What is the cutting speed for aluminium?

A 20 to 35 m/min

B 25 to 40 m/min

C 35 to 50 m/min

D 70 to 100 m/min


2.     What is the cutting speed for steel?

A 20 - 30 m/min

B 40 - 50 m/min

C 30 - 40 m/min

D 70 - 100 m/min


3.     How many types of threaded fastening available in ISO inch (unified) thread?

A One

B Two

C Four

D Three


4.   What is the thread angle of British standard worth (BSW) thread?

A 60°

B 65°

C 55°

D 50°


5.   Why do you make tapered pipe threads on iron pipe?

A It prevents rusting

B To form water tight joint

C It saws from bording materials

D It should not be taken out again


6.     How many threads usually kept on first tap or taper tap?

A 6 to 8

B 8 to 10

C 8 to 12

D 10 to 12


7.     How many threads usually chamfered in a intermediate tap?

A 3 or 4

B 2 or 3

C 1 or 3

D 2 or 5


8.     Which tool is used to make marking lines on round bars or tubes?

A Try square

B Set square

C Box square

D Vernier caliper


9.     Which instrument is used for measure, testing and marking out purposes with other surfaces?

A Angle plate

B Corner plate

C Surface plate

D Box square plate


10.  Which material used to make surface plate and angle plate?

A Cast iron

B Mild steel

C Aluminium

D Stainless steel