Test
Quantitative Questions
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Preguntas del test (12)
1If the cutting conditions in a turning operation are set as: cutting speed (SFM) V=200 ft/min, feed f=0.010 in/rev, and depth of cut d=0.100 inch, __________ is the material removal rate (MRR).
- A2.4 in^3/min
- B0.2 in^3/min
- C0.02 in^3/min
- D3.6 in^3/min
2Calculate the tool life gained by reducing the cutting speed by half. Use n=0.5, C=477
- A300%
- B25%
- C400%
- D200%
3How 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.
- A1.0 hp
- B0.944 hp
- C2.71 hp
- D0.590 hp
4A drilling operation is running a 7mm drill bit at 1,111 RPM, and has a 0.15 mm/rev feed. What is the MRR for this operation?
- A6,413 mm^3/min
- B107 mm^3/min
- C61 mm^3/min
- D427 mm^3/min
5To keep the SFm (V) for aluminum at 300 feet/min, what RPM should a 1.0 inch diameter end mill spin?
- A1146 RPM
- B1885 RPM
- C96 RPM
- D3,141 RPM
6If the cutting conditions in a turning operation are set as: a steel bar of 2.750 inches in diameter turning at 333 RPM, feed f=0.010 in/rev, and depth of cut d=0.025 inch, ___________ is the material removal rate.
- A0.713 in^3/min
- B7.84 in^3/min
- C0.072 in^3/min
- D7.62 in^3/min
7An 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.
- Av=650 ft/min, f=0.025"
- Bv=2000 ft/min, f=0.003"
- Cv=60 ft/min, f=0.010"
- Dv=200 ft/min, f=0.025"
8A hole is being drilled with coolant into a 300 series stainless steel block. A 1/2" twist drill turning at 511 RPM with a feed rate of 0.010 in/rev is being used. What is the material removal rate?
- A1.00 in^3/min
- B3.14 in^3/min
- C4.00 in^3/min
- D2.00 in^3/min
9If 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%.
- A22%
- B123%
- C33%
- D133%
- E167%
- F222%
10(A hole is being drilled with coolant into a 300 series stainless steel block. A 1/2" twist drill turning at 511 RPM with a feed rate of 0.010 in/rev is being used. What is the material removal rate?)
For this problem, what is the HP requirement to drill the stainless steel?. Use the MAXIMUM value from table 21.2.- A1.90 hp
- B3.50 hp
- C3.80 hp
- D3.4 hp
11In an orthogonal cutting operation with a 7 degree rake angle cutter, r=075, the cutting force and thrust force are measured as Fc=1,500N, Ft=1,000N. The friction angle Beta is found to be approximately ___________.
- A27.3 degrees
- B39.3 degrees
- C33.69 degrees
- D40.69 degrees
- E37.7 degrees
- F47.69 degrees
12The surface roughness is estimated to be ___________ for turning with R=2mm cutter at a feed of f=0.4mm/rev.
- A10 micrometers
- B2 micrometers
- C0.4 micrometers
- D25 micrometers
Información
- Descripción
- Test sobre Quantitative Questions, creado por edonlon2007 el 10/12/2014.
- Autor
- edonlon2007
- Idioma
- English
- Visitas
- 2
- Valoración
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