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Mechanical Engineering
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Production Engineering
Comments
Question
The lead screw of a lathe has __________ threads.
Options
A. single start
B. double start
C. multi-start
D. any one of these
Correct Answer
single start
Production Engineering problems
Search Results
1. The tool made of cemented carbide wear out faster at
Options
A. slow speeds
B. medium speeds
C. fast speeds
D. very fast speeds
Show Answer
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Discuss
Correct Answer: slow speeds
2. During adiabatic saturation process on unsaturated air __________ remains constant.
Options
A. relative humidity
B. dew point temperature
C. dry bulb temperature
D. wet bulb temperature
Show Answer
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Discuss
Correct Answer: wet bulb temperature
3. Which of the following statement is wrong?
Options
A. The heat transfer in liquid and gases takes place according to convection.
B. The amount of heat flow through a body is dependent upon the material of the body.
C. The thermal conductivity of solid metals increases with rise in temperature,
D. Logarithmic mean temperature difference is not equal to the arithmetic mean temperature difference.
Show Answer
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Discuss
Correct Answer: The thermal conductivity of solid metals increases with rise in temperature,
4. As relative humidity decreases, the dew point temperature will be __________ wet bulb temperature.
Options
A. same as
B. lower than
C. higher man
Show Answer
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Discuss
Correct Answer: lower than
5. The heat transfer by conduction through a thick sphere is same as through a thick cylinder.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: False
6. The cutting tool in a milling machine is mounted on
Options
A. spindle
B. arbor
C. column
D. knee
Show Answer
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Discuss
Correct Answer: arbor
7. Drilling is an example of
Options
A. orthogonal cutting
B. oblique cutting
C. simple cutting
D. uniform cutting
Show Answer
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Discuss
Correct Answer: oblique cutting
8. The lip angle of a single point tool is usually
Options
A. 20° to 40°
B. 40° to 60°
C. 60° to 80°
D. none of these
Show Answer
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Discuss
Correct Answer: 60° to 80°
9. The work or surface speed for cylindrical grinding varies from
Options
A. 5 to 10 m/min
B. 10 to 20 m/min
C. 20 to 30 m/min
D. 40 to 60 m/min
Show Answer
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Discuss
Correct Answer: 20 to 30 m/min
10. Side rake angle of a single point cutting tool is the angle
Options
A. by which the face of the tool is inclined towards back
B. by which the face of the tool is inclined sideways
C. between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
D. between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Show Answer
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Discuss
Correct Answer: by which the face of the tool is inclined sideways
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