1) The surface of the single point cutting tool on which the chips formed in cutting operation slide is called as
a. flank
b. heel
c. face
d. shank
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2) Lead angle in the single point cutting tool is the angle between
a. the end cutting edge and the normal to the tool shank
b. the portion of side shank immediately below the side cutting edge and the line perpendicular to the base of the tool
c. the tool face and the parallel to the base of the tool
d. side cutting edge and the side of the tool shank
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Answer
Explanation
Related Ques
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ANSWER: side cutting edge and the side of the tool shank
Explanation:
No explanation is available for this question!
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3) The angle between side cutting edge and end cutting edge is called as
a. approach angle
b. nose angle
c. side relief angle
d. end relief angle
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4) Tool life in orthogonal cutting is
a. more than the tool life in oblique cutting
b. less than the tool life in oblique cutting
c. equal to the tool life in oblique cutting
d. cannot say
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5) Calculate the power required for machining of a workpiece on lathe having efficiency of 85% on full load, when tangential force required is 1200 N and cutting speed 195 m/min.
a. 4.59 kW
b. 275.29 W
c. 3.315 kW
d. insufficient data
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6) Which of the following statements are true for Electro-Chemical Machining (ECM)?
1. ECM is capable of machining metals and alloys irrespective of their strength and hardness
2. No cutting forces are involved in ECM process
3. ECM process consumes very high power
4. Very small space is required to set up ECM process
a. (1), (2) and (3)
b. (2), (3) and (4)
c. (1), (3) and (4)
d. (1), (2) and (4)
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7) In which process the material is removed due to the action of abrasive grains?
a. Electro-Chemical Grinding (ECG)
b. Ultrasonic Machining (USM)
c. Laser Beam Machining (LBM)
d. Electrical Discharge Machining (EDM)
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8) Which of the following processes is generally applied for dentistry work like to drill fine holes of particular shape in teeth?
a. Electrical Discharge Machining (EDM)
b. Electron Beam Machining (EBM)
c. Laser Beam Machining (LBM)
d. Ultrasonic Machining (USM)
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9) The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is
a. air
b. liquid
c. vacuum
d. any of the above medium
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10) Which of the following process has highest rate of metal removal?
a. Electric Discharge Machining (EDM)
b. Electro-Chemical Machining (ECM)
c. Ultrasonic Machining (USM)
d. Laser Beam Machining (LBM)
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11) Which of the following statements are correct for CNC machine tool?
1. CNC control unit does not allow compensation for any changes in the dimensions of cutting tool
2. CNC machine tool are suitable for long run applications
3. It is possible to obtain information on machine utilization which is useful to management in CNC machine tool
4. CNC machine tool has greater flexibility
5. CNC machine can diagnose program and can detect the machine defects even before the part is produced
a. (1), (2) and (3)
b. (2), (4) and (5)
c. (3), (4) and (5)
d. (2), (3), (4) and (5)
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12) Several machine tools can be controlled by a central computer in
a. NC (Numerical Control) machine tool
b. CNC (Computer Numerical Control) machine tool
c. DNC (Direct Numerical Control) machine tool
d. CCNC (Central-Computer Numerical Control) machine tool
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13) Part-programming mistakes can be avoided in
a. NC (Numerical Control) machine tool
b. CNC (Computer Numerical Control) machine tool
c. Both a. and b.
d. None of the above
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Answer
Explanation
Related Ques
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ANSWER: CNC (Computer Numerical Control) machine tool
Explanation:
No explanation is available for this question!
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14) The machine tool, in which calculation and setting of the operating conditions like depth of cut, feed, speed are done during the machining by the control system itself, is called
a. Computer Numerical Control System
b. Direct Numerical Control System
c. Machining Centre System
d. Adaptive Control System
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15) Which machine tool reduces the number of set-ups in machining operation, time spent in setting machine tools and transportation between sections of machines?
a. Computer Numerical Control machine tool
b. Direct Numerical Control machine tool
c. Adaptive Control Systems
d. Machining centre
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16) The device which place the workpiece in the same position, in jig and fixture, cycle after cycle is called as
a. placing device
b. fixing device
c. locating device
d. positioning device
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17) Which type of Support pin or rest button is shown in below diagram?
a. Fixed type support pin
b. Adjustable type support pin
c. Support pad
d. Wedge type support pin
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18) V-blocks (Vee locators) are used for clamping as well as locating when faces are inclined upto
a. 30o
b. 12o
c. 9o
d. 3o
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19) The device which is used to remove workpiece from close-fitting locators, after the workpiece has been removed is called as
a. remover
b. ejector
c. escaper
d. blocker
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20) Which fixtures are used for machining parts which must have machined details evenly spaced?
a. Profile fixtures
b. Duplex fixtures
c. Indexing fixtures
d. None of the above
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21) The forces required for metal cutting operation
a. increase with increase in the feed of the tool and decreases with increase in the depth of cut
b. decrease with increase in the feed of the tool and increases with increase in the depth of cut
c. increase with increase in both the feed of the tool and the depth of cut
d. decrease with increase in both the feed of the tool and the depth of cut
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Answer
Explanation
Related Ques
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ANSWER: increase with increase in both the feed of the tool and the depth of cut
Explanation:
No explanation is available for this question!
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22) What is the angle Φ shown in the below diagram of basic mechanism of chip formation?
a. Shear angle
b. Tool rake angle
c. Chip angle
d. Cutting angle
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23) In metal cutting operation, maximum heat (i.e. 80-85%) is generated in
a. the shear zone
b. the chip-tool interface zone
c. the tool-work interface zone
d. none of the above
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24) Which cutting condition affects the cutting temperature predominantly?
a. depth of cut
b. cutting speed
c. feed
d. none of the above has any effect on cutting temperature
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25) The point at which the cutting tool reaches, beyond which it will not function satisfactorily until it is reground, is called as
a. tool wear
b. tool failure
c. too diffusion
d. none of the above
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