Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Chapter 7.2, Problem 5RQ
What superabrasive is a good choice for grinding carbide?
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A 100 m length of a smooth horizontal pipe is attached to a large reservoir. A
attached to the end of the pipe
to pump water into the
reservoir at a volume flow rate
of 0.01 m³/s. What pressure
(gage) must the pump produce
at the pipe to generate this
flow rate? The inside diameter
of the smooth pipe is 150mm.
Dynamic Viscosity of water is
1*103 Kg/(m.s). K at the exit
of the pipe is 1.
pump
10 m
D=150mm
L= 100 m-
Pump
: +0
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A heavy car plunges into a lake during an accident and lands at the bottom of the lake
on its wheels as shown in figure. The door is 1.2 m high and 1 m wide, and the top edge of
the door is 8 m below the free surface of the water. Determine the hydrostatic force on the
door if it is located at the center of the door, and discuss if the driver can open the door, if
not; suggest a way for him to open it. Assume a strong person can lift 100 kg, the passenger
cabin is well-sealed so that no water leaks inside. The door can be approximated as a
vertical rectangular plate.
8 m
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Lake
Two concentric plain helical springs of the same length are wound out of the samewire circular in cross section and supports a compressive load P. The inner springmean diameter 200 mm. Calculate the maximum stress induced in the spring if theconsists of 20 turns of mean dimeter 160 mm and the outer spring has 18 turns ofdiameter of wire is equal to 10 mm and Pis equal to 1000 N. (Take Ks=1)
Chapter 7 Solutions
Precision Machining Technology
Ch. 7.1 - What are three benefits of precision grinding?Ch. 7.1 - What is the major use of the surface grinder?Ch. 7.1 - What are the two spindle types used for surface...Ch. 7.1 - What are the two types of table movements used for...Ch. 7.1 - Label the parts of the surface grinder.Ch. 7.1 - What are three types of cylindrical grinders?Ch. 7.1 - Tool and cutter grinders can be used to _______...Ch. 7.2 - What wheel shapes are commonly used for surface...Ch. 7.2 - What abrasive is commonly used to grind steels?Ch. 7.2 - What abrasive is used to grind nonferrous metals,...
Ch. 7.2 - What does CBN stand for?Ch. 7.2 - What superabrasive is a good choice for grinding...Ch. 7.2 - The grade of a wheel describes its __________ on a...Ch. 7.2 - Prob. 7RQCh. 7.2 - Prob. 8RQCh. 7.2 - Generally, harder wheels should be used to grind...Ch. 7.2 - Wheel A: 32A60H8V Wheel B: 39C100L6V What is the...Ch. 7.2 - Wheel A: 32A60H8V Wheel B: 39C100L6V Which wheel...Ch. 7.2 - Wheel A: 32A60H8V Wheel B: 39C100L6V Which wheel...Ch. 7.2 - Wheel A: 32A60H8V Wheel B: 39C100L6V Which wheel...Ch. 7.2 - Wheel A: 32A60H8V Wheel B: 39C100L6V What type of...Ch. 7.3 - List five surface grinder safety guidelines.Ch. 7.3 - What should be done to every grinding wheel before...Ch. 7.3 - When using a magnetic workholding device, the work...Ch. 7.3 - When using a magnetic chuck to hold a workpiece...Ch. 7.3 - Describe the difference between wheel truing and...Ch. 7.3 - What tool is used to true and dress an aluminum...Ch. 7.3 - How is a CBN wheel trued and dressed?Ch. 7.3 - Depth-of-cut range for surface grinding is: a....Ch. 7.3 - What should be done to a magnetic chuck when it...Ch. 7.3 - What workholding device can extend the magnetic...Ch. 7.3 - What workholding device can be used when grinding...Ch. 7.3 - Briefly describe the method for grinding two...Ch. 7.3 - List three types of workpiece features that can be...Ch. 7.3 - List three possible solutions to eliminate bum...Ch. 7.3 - What can cause scratches on the surface of a...
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- t 1+2\xi pu +962гz P 1 A heavy car plunges into a lake during an accident and lands at the bottom of the lake on its wheels as shown in figure. The door is 1.2 m high and I m wide, and the top edge of the door is 8 m below the free surface of the water. Determine the hydrostatic force on the door if it is located at the center of the door, and discuss if the driver can open the door, if not; suggest a way for him to open it. Assume a strong person can lift 100 kg, the passenger cabin is well-sealed so that no water leaks inside. The door can be approximated as a vertical rectangular plate. 加 8 m 1.2 m Lake -20125 DI 750 x2.01 5 P 165 Xarrow_forward11. If Sin(x+α) = 2Cos(x-a); prove that: tan x= 2- tana 1-2 tanaarrow_forward12. If Sin(x-a)= Cos(x+α); prove that: tan x=1.arrow_forward
- : +0 العنوان solle не A 4 A numn drawe water through 200 ۳/۱ ۲/۱ A heavy car plunges into a lake during an accident and lands at the bottom of the lake on its wheels as shown in figure. The door is 1.2 m high and 1 m wide, and the top edge of the door is 8 m below the free surface of the water. Determine the hydrostatic force on the door if it is located at the center of the door, and discuss if the driver can open the door, if not; suggest a way for him to open it. Assume a strong person can lift 100 kg, the passenger cabin is well-sealed so that no water leaks inside. The door can be approximated as a vertical rectangular plate. 8 m E ✓ Lakearrow_forward۲/۱ - | العنوان A heavy car plunges into a lake during an accident and lands at the bottom of the lake on its wheels as shown in figure. The door 1.2 m high and 1 m wide, and the top edge of the door is 8 m below the free surface of the water. Determine the hydrostatic force on the door if it is located at the center of the door, and discuss if the driver can open the door, if not; suggest a way for him to open it. Assume a strong person can lift 100 kg, the passenger cabin is well-sealed so that no water leaks inside. The door can be approximated as a vertical rectangular plate. 8 m Lakearrow_forward- | A pump draws water through a 300-mm diameter cast iron pipe, 15m long from a reservoir in which the water surface is 4.5 m higher than the pump and discharges through a 250- mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 m higher than the pump. Q-0.25 m³/s. Considering f- 0.02 and the coefficients for minor head losses (k entrance 0.5, k bend 0.35, and K exit -0.5), compute the power of the pump. Kexit 250 mm dia 75 m Length 60 m العنوان 300 mm dia. 15 m Length -UZ kentrance 11421 Kpend osthor oster ۲/۱arrow_forward
- A heavy car plunges into a lake during an accident and lands at the bottom of the lake on its wheels as shown in figure. The door is 1.2 m high and 1 m wide, and the top edge of the door is 8 m below the free surface of the water. Determine the hydrostatic force on the door if it is located at the center of the door, and discuss if the driver can open the door, if not; suggest a way for him to open it. Assume a strong person can lift 100 kg, the passenger cabin is well-sealed so that no water leaks inside. The door can be approximated as a vertical rectangular plate. 8 m m Lakearrow_forward۲/۱ A pump draws water through a 300-mm diameter cast iron pipe, 15m long from a reservoir in which the water surface is 4.5 m higher than the pump and discharges through a 250- mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 m higher than the pump. Q = 0.25 m³/s. Considering f= 0.02 and the coefficients for minor head losses (k entrance = 0.5, k hend 0.35, and K exit -0.5), compute the power of the pump. 4.5 m 300 mm dia. 15 m Length 250 mm dia. 75 m Length kentrance kexit 60 m kbend ostherarrow_forwardA pump draws water through a 300-mm diameter cast iron pipe, 15m long from a reservoir in which the water surface is 4.5 m higher than the pump and discharges through a 250- mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 m higher than the pump. Q = 0.25 m³/s. Considering f= 0.02 and the coefficients for minor head losses (k entrance = 0.5, k hend = 0.35, and K exit 0.5), compute the power of the pump. = 4.5 m 300 mm dia. 15 m Length 250 mm dia. 75 m Length Kentrance kexit 60 m kbendarrow_forward
- A pump draws water through a 300-mm diameter cast iron pipe, 15m long from a reservoir in which the water surface is 4.5 m higher than the pump and discharges through a 250- mm diameter cast iron, 75 m long, to an elevated tank in which the water surface is 60 m higher than the pump. Q = 0.25 m³/s. Considering f= 0.02 and the coefficients for minor head losses (k entrance = 0.5, k hend = 0.35, and K exit 0.5), compute the power of the pump. = 4.5 m 300 mm dia. 15 m Length 250 mm dia. 75 m Length Kentrance kexit 60 m kbendarrow_forward4. Give the dimensions completely of the following figure?arrow_forward2. Consider the picture shown in figure and draw the orthographic projection of the object in first angle projection (in direction of arrow X). ✗ 10 90° 60 60 10 15 40 40arrow_forward
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