Manufacturing And Production Technology - Study Mode

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[#281] The cutting speed for drilling copper with high speed steel drills varies from

(A) 10 to 20 m/min

(B) 18 to 30 m/min

(C) 24 to 45 m/min

(D) 60 to 90 m/min

Correct Answer

(B) 18 to 30 m/min

[#282] Discontinuous chips are formed during machining of

(A) Brittle metals

(B) Ductile metals

(C) Hard metals

(D) Soft metals

Correct Answer

(A) Brittle metals

[#283] Continuous chips with built up edge are formed during machining of

(A) Brittle metals

(B) Ductile metals

(C) Hard metals

(D) Soft metals

Correct Answer

(B) Ductile metals

[#284] The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called

(A) Profile milling

(B) Gang milling

(C) Saw milling

(D) Helical milling

Correct Answer

(D) Helical milling

[#285] The silicon carbide abrasive is chiefly used for grinding

(A) Cemented carbide

(B) Ceramic

(C) Cast iron

(D) All of these

Correct Answer

(D) All of these