Q: air pressure machines are:
Q: air pressure machines are : a) used for casting Co-Cr alloys b) used for casting Ni-Cr alloys c) used for casting titanium d) used for casting gold alloys
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i 6% Q.5.) The teeth cutting (drilling) microtool of dentists will be produced. For this application...
i 6% Q.5.) The teeth cutting (drilling) microtool of dentists will be produced. For this application which of the following materials would be suited most: (a) An austenitic stainless steel tool. For medical applications it is a must (b) A quenched and tempered (2000) plain carbon steel tool with 0.3%C. (c) WC-Co cutting tool produced by powder metallurgy methods (d) A Ni-Cr-Co superalloy 6% QA) (a) 0,4%C steel (Annealed) (b) 0,4%C+4%Cr steel water quenched and tempered at 200C (c) 0.2%C...
Q. 8) What is the temperature (°C) of 0.198 moles of air in lungs with a...
Q. 8) What is the temperature (°C) of 0.198 moles of air in lungs with a capacity of 5.41 L at an atmospheric pressure of 0.934 atm? Group of answer choices A.) 310°C B.) 273°C C.) 37.3°C D.) 583°C Q 10.) A sample of nitrogen gas has a volume of 0.180 L, at a pressure of 0.800 atm and a temperature of 29°C. What is the new temperature (°C) of the gas at a volume of 90.0 mL and a...
Find the partial pressure of CO in air needed to cause CO poisoning symptoms in a)...
Find the partial pressure of CO in air needed to cause CO poisoning symptoms in a) a healthy adult, b) o 290) and, c) an adult smoker that has a current HbCO/HbO, of 5%. Assume equilibrium contact between the person and the contaminated air (8 hours of exposure). a healthy child (equilibrium rati
Please find the correct option.(A-B-C-D) In an ideal air-powered Diesel cycle, the air pressure at the...
Please find the correct option.(A-B-C-D) In an ideal air-powered Diesel cycle, the air pressure at the start of the compression process is 0.1 MPa, the temperature is 27 degrees Celsius, and at the end of the compression process its temperature is 680 degrees Celsius. d. The maximum temperature of the cycle is 1700 degrees Celsius. Fixed specific temperatures will be used at room temperature. What is the thermal efficiency for the specified diesel conversion? A-) %52 B-) %72 C-) %62...
Q-1 Air at 1 atm and 20 0C occupies an initial volume of 1000 cm3 in...
Q-1 Air at 1 atm and 20 0C occupies an initial volume of 1000 cm3 in a cylinder. The air is confined by a piston which has a constant restraining force so that the gas pressure always remains constant. Heat is added to the air until its temperature reaches 260 0C. Calculate (a) the heat added (b) the work done by the gas, (c) the change in internal energy of the gas. Q-2 An ideal gas is contained in a...
(a) if the partial pressure of oxygen in air at 1.0 atm is 160mmHg, what is...
(a) if the partial pressure of oxygen in air at 1.0 atm is 160mmHg, what is the partial pressure on the summit of Mt. Whitney, where atmospheric pressure is 440mmHg? Assume the % of oxygen is the same. (b) how many moles of oxygen are in 1.00L of air at standard atmospheric pressure of 1 atm? (c) How many moles of oxygen are in 1.00L of air on the summit of Mt. Whitney? (d) Comapre the vaules of part (b)...
10. Assuming the air pressure Midland, Texas is 710. mmHg, calculate the pressure 1of the gas in ...
10. Assuming the air pressure Midland, Texas is 710. mmHg, calculate the pressure 1of the gas in a manometer in Midland, Texas. Gas 420 mmHg CHALLENGE PROBLEMS: 1. A 20. m long gas pipeline made out of Schedule 40. PVC pipe that is 2.66 cm in diameter is used to transport butane to a residential house's stove. The pipe can withstand 9928.45 kPa at 23 °C. Determine the maximum mass of gas the pipe can hold. A paintball gun's air-tank...
Problem 2.5 Constant Pressure Process Air is compressed from 0.092 m3 to 0.034 m’ at a...
Problem 2.5 Constant Pressure Process Air is compressed from 0.092 m3 to 0.034 m’ at a constant pressure of 1.7 kPaa. Assume Perfect Gas behavior. ko kPa m3 Cpair = 29.11 ( = T(°C) + 273.15 kgmole K Tinitial = 18.9 °C Calculate the heat of the process (Q) in kJ with the calculated enthalpy. (provide your answer with four significant figures and enter the required units) Hint: Store your calculated value in one of the memories of your calculator...
Air enters a two-stage compressor at 300 K and 101 kPa. The pressure ratio of each...
Air enters a two-stage compressor at 300 K and 101 kPa. The pressure ratio of each compressor stage is 3, and there is intercooling between the stages, which reduces the temperature of the air back to 300 K. The efficiency of the compressors is 0.70; the ratio of specific heats for air, k, is 1.40; and the specific heat at constant pressure, p, is 1000 J/kg K. What would be the temperature of the air after the second compression if...
(a) Can oxygen be considered an alloying element for titanium? Explain. (b) What is the effect...
(a) Can oxygen be considered an alloying element for titanium? Explain. (b) What is the effect of high oxygen content on the mechanical properties of titanium alloys? (c) Unlike steel martensite, the formation of titanium martensite does not impart high hardness to the alloy. Explain why. (d) What principal microstructure changes occur when titanium martensite is tempered at 500ºC?
i 6% Q.5.) The teeth cutting (drilling) microtool of dentists will be produced. For this application which of the following materials would be suited most: (a) An austenitic stainless steel tool. For medical applications it is a must (b) A quenched and tempered (2000) plain carbon steel tool with 0.3%C. (c) WC-Co cutting tool produced by powder metallurgy methods (d) A Ni-Cr-Co superalloy 6% QA) (a) 0,4%C steel (Annealed) (b) 0,4%C+4%Cr steel water quenched and tempered at 200C (c) 0.2%C...
Find the partial pressure of CO in air needed to cause CO poisoning symptoms in a) a healthy adult, b) o 290) and, c) an adult smoker that has a current HbCO/HbO, of 5%. Assume equilibrium contact between the person and the contaminated air (8 hours of exposure). a healthy child (equilibrium rati
10. Assuming the air pressure Midland, Texas is 710. mmHg, calculate the pressure 1of the gas in a manometer in Midland, Texas. Gas 420 mmHg CHALLENGE PROBLEMS: 1. A 20. m long gas pipeline made out of Schedule 40. PVC pipe that is 2.66 cm in diameter is used to transport butane to a residential house's stove. The pipe can withstand 9928.45 kPa at 23 °C. Determine the maximum mass of gas the pipe can hold. A paintball gun's air-tank...
Problem 2.5 Constant Pressure Process Air is compressed from 0.092 m3 to 0.034 m’ at a constant pressure of 1.7 kPaa. Assume Perfect Gas behavior. ko kPa m3 Cpair = 29.11 ( = T(°C) + 273.15 kgmole K Tinitial = 18.9 °C Calculate the heat of the process (Q) in kJ with the calculated enthalpy. (provide your answer with four significant figures and enter the required units) Hint: Store your calculated value in one of the memories of your calculator...
Air enters a two-stage compressor at 300 K and 101 kPa. The pressure ratio of each compressor stage is 3, and there is intercooling between the stages, which reduces the temperature of the air back to 300 K. The efficiency of the compressors is 0.70; the ratio of specific heats for air, k, is 1.40; and the specific heat at constant pressure, p, is 1000 J/kg K. What would be the temperature of the air after the second compression if...
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