1. The tooth thickness of rack is measured by?
A.Universal vernier caliper
B.Gear tooth vernier caliper
C.Flange micrometer
D.Gear tester Ans: B
2. Why it is necessary to maintain an approach distance between the cutting tool and the work while working on shaping machine?
A.To cool down the cutting edge of the tool bit
B.To avoid any ridger at the end of workpiece
C.To allow the chips to fall and clear the cutting edge
D.To enable the clapper box to return to cutting Ans: D
3. Oil grooves are to be cut in brass half bearings. Which one of the following chisels in suitable?
A.Flat chisel
B.Cross chisel
C.Half round nose chisel
D.Web chisel Ans: C
4. .The quality control allows at the most 0.4% defective parts, How many defective parts can be allowed in a production of 500 parts?
A.1
B.2
C.10
D.20 Ans: B
5.One which unit the tool setting is done on NC machine?
A.On special devices away from the machine
B.On the NC machine during idle time
C.On the pre setting devices
D.None of above Ans: C
6.The component of the surface texture upon which the roughness is superimposed is known as?
A.Surface roughness
B.Surface texture
C.Lay
D.Waviness Ans: D
7.Which one of the following groups of properties enables the manufacture of chain hooks from wrought iron?
A.Ductillity, malleability and hardness
B.Hardness, toughness and ductility
C.Malleability, ductility and toughness
D.Hardness, toughness and brittleness Ans: C
8. CNC machine are not manually operated. They are controlled by means of?
A.A programme
B.An operating
C.A cam
D.A plug board system Ans: A
9.Counter boring is done for?
A.Deburring hole ends
B.Enlarging holes to accurate size
C.Finishing cored holes
D.Accommodating socket head screws Ans: D
10.A point to point control system is suitable only for one of the following applications?
A.Milling profile
B.Turning
C.Drilling
D.Grinding Ans: C
11.A steel workpiece of height tensile strength is to be machined with a HSS milling cutter, which one of the following rake angles is best suited for the cutter?
A.8"
B.12"
C.20"
D.28" Ans: A
12.By using quick return mechanism in shaping machine the cutting stroke moves slow and return stroke fast. what is the ratio between cutting stroke and return stroke?
A.2:3
B.3:2
C.5:3
D.3:5 Ans: B
12.What will be the result if the clearance angle in drill is increased?
A.Poor wedging action
B.Weak cutting edge
C.Rough hole surface
D.Increased point angle Ans: B
13..An irregularly shaped workpiece is turned on a lathe. which one of the following work holding accessories is used?
A.Three jaw chuck
B.Two jaw chuck
C.Driving plate
D.Face plate Ans: D
14.Solid H.S.S. cutters and carbide inserted tooth cutters are commonly used for milling, the permissible cutting speed of an inserted tooth cutter in relation to that of a HSS cutter is?
A.Twice as much
B.Five to ten times greater
C.smaller
D.Same Ans: A
15.It is required to machine a single start worm of 2 module (m) and 60 mm pitch diameter, the speed ration is 40:1, to what length should the worm be cut?
A.21 mm
B.14.6 mm
C.29.3 mm
D.33.3 mm Ans: C
16.The pattern on the work surface caused by the movement of the cutting tool is called?
A.Waviness
B.Roughness
C.Surface texture
D.Lay Ans: C
17.A product is said to have the quality when?
A.Its shape and dimensions are within the limits
B.It appears to be very good
C.It is fit for use
D.The choice of material is right Ans: C
18.Which taper is used on spindle nose of the lathe head stock?
A.Jerno taper
B.Brown and sharp taper
C.Pin taper
D.Morse taper Ans: D
19.Why do you hold a workpiece lengthwise while machining in a planning machine?
A.It is easier to load workpiece lengthwise
B.The idle time will be minimised
C.The surface quality will be improved
D.The tool life will be increased Ans: C
20.A hole whose lower deviation is zero is called basic hole, which one of the following letters indicates basic hole?
A. E
B. F
C. G
D. H Ans: D
A.Universal vernier caliper
B.Gear tooth vernier caliper
C.Flange micrometer
D.Gear tester Ans: B
2. Why it is necessary to maintain an approach distance between the cutting tool and the work while working on shaping machine?
A.To cool down the cutting edge of the tool bit
B.To avoid any ridger at the end of workpiece
C.To allow the chips to fall and clear the cutting edge
D.To enable the clapper box to return to cutting Ans: D
3. Oil grooves are to be cut in brass half bearings. Which one of the following chisels in suitable?
A.Flat chisel
B.Cross chisel
C.Half round nose chisel
D.Web chisel Ans: C
4. .The quality control allows at the most 0.4% defective parts, How many defective parts can be allowed in a production of 500 parts?
A.1
B.2
C.10
D.20 Ans: B
5.One which unit the tool setting is done on NC machine?
A.On special devices away from the machine
B.On the NC machine during idle time
C.On the pre setting devices
D.None of above Ans: C
6.The component of the surface texture upon which the roughness is superimposed is known as?
A.Surface roughness
B.Surface texture
C.Lay
D.Waviness Ans: D
7.Which one of the following groups of properties enables the manufacture of chain hooks from wrought iron?
A.Ductillity, malleability and hardness
B.Hardness, toughness and ductility
C.Malleability, ductility and toughness
D.Hardness, toughness and brittleness Ans: C
8. CNC machine are not manually operated. They are controlled by means of?
A.A programme
B.An operating
C.A cam
D.A plug board system Ans: A
9.Counter boring is done for?
A.Deburring hole ends
B.Enlarging holes to accurate size
C.Finishing cored holes
D.Accommodating socket head screws Ans: D
10.A point to point control system is suitable only for one of the following applications?
A.Milling profile
B.Turning
C.Drilling
D.Grinding Ans: C
11.A steel workpiece of height tensile strength is to be machined with a HSS milling cutter, which one of the following rake angles is best suited for the cutter?
A.8"
B.12"
C.20"
D.28" Ans: A
12.By using quick return mechanism in shaping machine the cutting stroke moves slow and return stroke fast. what is the ratio between cutting stroke and return stroke?
A.2:3
B.3:2
C.5:3
D.3:5 Ans: B
12.What will be the result if the clearance angle in drill is increased?
A.Poor wedging action
B.Weak cutting edge
C.Rough hole surface
D.Increased point angle Ans: B
13..An irregularly shaped workpiece is turned on a lathe. which one of the following work holding accessories is used?
A.Three jaw chuck
B.Two jaw chuck
C.Driving plate
D.Face plate Ans: D
14.Solid H.S.S. cutters and carbide inserted tooth cutters are commonly used for milling, the permissible cutting speed of an inserted tooth cutter in relation to that of a HSS cutter is?
A.Twice as much
B.Five to ten times greater
C.smaller
D.Same Ans: A
15.It is required to machine a single start worm of 2 module (m) and 60 mm pitch diameter, the speed ration is 40:1, to what length should the worm be cut?
A.21 mm
B.14.6 mm
C.29.3 mm
D.33.3 mm Ans: C
16.The pattern on the work surface caused by the movement of the cutting tool is called?
A.Waviness
B.Roughness
C.Surface texture
D.Lay Ans: C
17.A product is said to have the quality when?
A.Its shape and dimensions are within the limits
B.It appears to be very good
C.It is fit for use
D.The choice of material is right Ans: C
18.Which taper is used on spindle nose of the lathe head stock?
A.Jerno taper
B.Brown and sharp taper
C.Pin taper
D.Morse taper Ans: D
19.Why do you hold a workpiece lengthwise while machining in a planning machine?
A.It is easier to load workpiece lengthwise
B.The idle time will be minimised
C.The surface quality will be improved
D.The tool life will be increased Ans: C
20.A hole whose lower deviation is zero is called basic hole, which one of the following letters indicates basic hole?
A. E
B. F
C. G
D. H Ans: D
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