Test
Quantitative
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Preguntas del test (11)
1If the cutting conditions in a turning operation are set as: A steel bar of 2.750 inches in diameter turning at 333 RPM, feed=.010in/rev, and depth of cut d=.025inch, __________ is the material removal rate
- A
8.62 in^3/m - B
7.84 in^3/m - C
.072 in^3/m - D
0.713 in^3/m
- A
2An uncoated carbide cutter is used to rough turn an aluminum workpiece, we should recommend the cutting speed v and feed f as _____________ as a starting condition
- A
v= 650ft/min, f=.025" - B
v= 2000ft/min, f= .003" - C
v= 60ft/min, f= .010" - D
v= 200ft/min, f= .025"
- A
3A hole is being drilled with coolant into a 300 series stainless steel block. A .5" twist drill turning at 511RPM with a feed rate of .010"/rev is being used. What is the material removal rate?
- A
1.00 in^3/min - B
4.00 in^3/min - C
3.14 in^3/min - D
2.00 in^3/min
- A
4
If a ceramic cutter is used to turn a high carbon steel (n=0.5 and C=400), the percentage increase in tool life is found to be ___________ when the cutting speed is reduced by 33%- A
22% - B
133% - C
33% - D
167% - E
123% - F
222%
- A
5In an orthogonal cutting operation with a 7 degree rake angle cutter, r=0.75, the cutting force and thrust force are measured as Fc= 1500N, Ft= 1000N. The friction angle (Beta) is found to be approximately __________.
- A
27.3 degrees - B
39.3 degrees - C
33.69 degrees - D
40.69 degrees - E
37.7 degrees - F
47.69 degrees
- A
6
The surface roughness is estimated to be __________ for turning with a R=2mm cutter at a feed of f= 0.4mm/rev.- A
10 micrometers - B
2 micrometers - C
0.4 micrometers - D
25 micrometers
- A
7
If the cutting conditions in a turning operation are set as: cutting speed (SFM) V =200ft/min, feed f= .010 in/rev, and depth of cut d= .100 inch, __________ is the material removal rate (MRR).- A
0.2 in^3/min - B
0.02 in^3/min - C
2.4 in^3/min - D
3.6 in^3/min
- A
8
Calculate the tool life increase gained by reducing the cutting speed by half. Use n= 0.5, C= 477- A
25% - B
300% - C
400% - D
200%
- A
9
How much hp is needed to drill a hole in a block of copper alloy that is generating an MRR of 1.18 in^3/min?- A
0.944hp - B
1.0hp - C
2.71hp - D
.590hp
- A
10
A drilling operation is running a 7mm drill bit at 1,111RPM,a nd has a 0.15 mm/rev feed. What is the MRR for this operation?- A
107 mm^3/min - B
61 mm^3/sec - C
427 mm^3/min - D
6,413 mm^3/min
- A
11
To keep the SFM (V) for aluminum at 300 ft/min, what RPM should a 1.0" diameter end mill spin?- A
1885 RPM - B
1146 RPM - C
96 RPM - D
3141 RPM
- A
Información
- Descripción
- Test sobre Quantitative, creado por torixoxo6 el 10/12/2014.
- Autor
- torixoxo6
- Idioma
- English
- Visitas
- 1
- Valoración
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