Mcq With Answers 6h63p

1) The usual ratio of return to cutting speed in shaper is a) 2:1 b) 1:2 c) 2:3 d) 3:2 2) Lathe spindle has got a) Internal threads b) External threads c) Taper threads d) No threads 3) Galvanizing is a) Zinc diffusion process b) An oxidizing process used for aluminum and magnesium articles c) A process used for making thin phosphate coating on steel to act as a base or primer for enamels and paints d) The process of coating of zinc by hot dipping 4) The difference between planer and shaper is that in former case a) Tool moves over stationary work b) Tool moves over reciprocating work c) Both tool and job reciprocate d) Tool is stationary and job reciprocates 5) Arbor of the milling machine is used to hold a) Cutting tool b) Spindle size c) Over arm d) Mandrel 6) In gang milling a) Several jobs can be performed in one set-up b) One job is completed on several milling machines located together c) Two or more cutters are mounted on the arbor and all of them remove the metal simultaneously d) None of the above 7) Segmented chips are formed when machining a) Ductile metal

b) Brittle material c) Heat treated material d) None of the above 8) A 5 taper over 5 mm length is to be made on a 100 mm diameter job, which method should be used? a) Taper turning attachment b) Tail stock offset method c) Compound rest method d) Form tool method 9) In tool signature, nose radius is indicated a) In the beginning b) At the end c) In the middle d) Not indicated 10) Reaming is the operation of a) Enlarging the end of a hole cylindrically b) Cone shaped enlargement of the end of a hole c) Smoothing and squaring the surface around a hole d) Sizing and finishing a hole 11) Fastest method of cutting gears is a) Milling b) Gear shaping c) Gear hobbling d) All of the above 12) Ability of a tool material to retain its hardness, while working at elevated temperature, is known as a) Wear resistance b) Red hardness c) Toughness d) None of the above 13) In metal cutting operation on machine tools, major part of heat is carried by a) Tool b) Work piece c) Chip d) All of the above

14) Ability of tool material to resist shock due to impact forces is known as a) Wear resistance b) Red hardness c) Toughness d) None of the above 15) Height of the center measured from the bed of the lathe as compared to swing diameter over the bed is a) Half b) Double c) Same d) Four times 16) In lathes, Half nut is used to a) Give desired direction of movement to the lathe carriage b) Lock the lathe carriage to the lead screws for thread cutting c) Reduce spindle speed d) None of the above 17) In lathes, tumbler gears are used to a) Reduce spindle speed b) Give desired direction of movement to the lathe carriage c) Lock the lather carriage to lead screw for thread cutting d) Cut gears 18) A steady rest is used for a) Heavy and long work pieces b) Irregular work pieces c) Taper turning work pieces d) ing the bed 19) In lathe, chasing dial is used for a) Thread cutting b) Drilling c) Parting off d) Taper turning 20) A step cone pulley is provided on a lathe to a) Reverse the spindle rotation b) Change the spindle speed

c) Drive the lead screw d) All of the above 21) If the back gear is engaged in a back geared head stock, the spindly speed considerably a) Increases b) Decreases c) Remains same d) None of the above 22) In lathe, the spindle speed will be minimum in a) Plain turning b) Thread cutting c) Taper turning d) Finishing 23) Knurling is an operation of a) Cutting smooth collars b) Under cutting c) Roughing the surface for hand grip d) None of the above 24) Reducing the diameter of work piece over a very narrow surface, is known as a) Chamfering b) Grooving c) Facing d) Knurling 25) Operation of beveling the extreme end of a work piece, is known as a) Chamfering b) Grooving c) Facing d) Knurling