Please answer Number 6 only. Thank you 1. A circular punch 20 mm in diameter is used to punch a hole through a steel plate 10 mm thick. If the force necessary todrive the punch through the metal is 250 kN, determine the maximum shearing stress developed in the materialc. 400 MPad. 500 MPaa. 200 MPab. 300 MPa2. It is required to transmit 70 Hp from a turbine by a solid circular shaft turning at 200 rpm. If the allowable shearing stressis 45 MPa, determine the required shaft diameter.a. 34.2 mmb. 65.6 mmc. 52.2 mmd. 9.35 mm3. If the maximum permissible shearing stress is 10,000 psi, how many 3/8" bolts arranged in a 5" diameter bolt circle arerequired to transmit 100 hp at 315 rpm through a flanged coupling?a. 6b. 7c. 8d. 94. Determine the maximum shearing stress in a helical spring composed of 20 turns of 20mm diameter wire on mean radiusof 80 mm when the spring is supporting a load of 2 kN.a. 121 MPab. 115 MPac. 142 MPad. 157 MPa5. A solid circular steel rod 6 mm in diameter and 500 mm long is rigidly fastened to the end of a square brass bar 25 mm ona side and 400 mm long, the geometric axes of the bars lying along the same line. An axial tensile force of 5kN is applied ateach of the extreme ends. Determine the total elongation of the assembly. For steel, E = 200 GPa and for brass E = 90 GPa.a. 0.293 mmb. 0.545 mmc. 0.374 mmd. 0.477 mm6. A propeller shaft in a ship is 350 mm in diameter. The allowable working stress in shear is 50 MPa and the allowable angleof twist is 1° in 15 diameters of length. If G = 85 GPa, determine the maximum torque the shaft can transmit.a. 416 kN-mb. 395 kN-md. 441 kN-mc. 362 kN-m7. How much heat is required to change 100 lbs of ice at 10°F to steam at 212°F? Assume the following:specific heat of ice = 0.5 BTU/lb.°Fheat of fusion of ice = 144 BTU/lbspecific heat of water = 1 BTU/b-°Fheat of vaporization of water = 970 BTU/bd. 110,500 BTUa. 125,000 BTUb. 150,000 BTUc. 130,500 BTU8. A piston and cylinder arrangement contains saturated water vapor at 110 deg C. The vapor is compressed in a reversible,adiabatic process until the pressure is 1.6 MPa. What is the work done by the system per kilogram of water?a. -330 KJ/kgb.-637 kJ/kgc. -509 KJ/kgd. -432 KJ/kg9. Steam is contained in a 4-liter volume at a pressure of 1.5 MPa and a temperature of 200°C. If the pressure is held constantby expanding the volume while 40 kJ of heat is added, find the final temperature.a. 785 °Cb. 845 °Cc. 512 °Cd. 673 °C10. Eight thousand cu. cm of air in a piston-cylinder arrangementkPa to a pressure of 800 kPa. Find the heat transfer.a. +4.44kJis compressed isothermally at 30°C from a pressure of 2006. +2.22 KJd. -4.44 kJb. -2.22 kJ11. A Carnot engine rejects 80 MJ of energy every hour by transferring heat to a reservoir at 10°C. Determine the powerproduced if the rate of energy addition is 40 kW.a. 22.23 kWb. 8.89 kWc. 13.34 kWd. 17.78 kW12. A gas of mass 0.2 kg is compressed slowly from 150 kPa and 40°C to 600 kPa, in an adiabatic process. Determine thefinal volume if the gas is air.a. 0.0445 cu. m.b. 0.0269 cu. m.c. 0.046 cu. m.d. 0.246 cu. m.

Question

Please answer Number 6 only. Thank you 1. A circular punch 20 mm in diameter is used to punch a hole through a steel plate 10 mm thick. If the force necessary todrive the punch through the metal is 250 kN, determine the maximum shearing stress developed in the materialc. 400 MPad. 500 MPaa. 200 MPab. 300 MPa2. It is required to transmit 70 Hp from a turbine by a solid circular shaft turning at 200 rpm. If the allowable shearing stressis 45 MPa, determine the required shaft diameter.a. 34.2 mmb. 65.6 mmc. 52.2 mmd. 9.35 mm3. If the maximum permissible shearing stress is 10,000 psi, how many 3/8&#34; bolts arranged in a 5&#34; diameter bolt circle arerequired to transmit 100 hp at 315 rpm through a flanged coupling?a. 6b. 7c. 8d. 94. Determine the maximum shearing stress in a helical spring composed of 20 turns of 20mm diameter wire on mean radiusof 80 mm when the spring is supporting a load of 2 kN.a. 121 MPab. 115 MPac. 142 MPad. 157 MPa5. A solid circular steel rod 6 mm in diameter and 500 mm long is rigidly fastened to the end of a square brass bar 25 mm ona side and 400 mm long, the geometric axes of the bars lying along the same line. An axial tensile force of 5kN is applied ateach of the extreme ends. Determine the total elongation of the assembly. For steel, E = 200 GPa and for brass E = 90 GPa.a. 0.293 mmb. 0.545 mmc. 0.374 mmd. 0.477 mm6. A propeller shaft in a ship is 350 mm in diameter. The allowable working stress in shear is 50 MPa and the allowable angleof twist is 1° in 15 diameters of length. If G = 85 GPa, determine the maximum torque the shaft can transmit.a. 416 kN-mb. 395 kN-md. 441 kN-mc. 362 kN-m7. How much heat is required to change 100 lbs of ice at 10°F to steam at 212°F? Assume the following:specific heat of ice = 0.5 BTU/lb.°Fheat of fusion of ice = 144 BTU/lbspecific heat of water = 1 BTU/b-°Fheat of vaporization of water = 970 BTU/bd. 110,500 BTUa. 125,000 BTUb. 150,000 BTUc. 130,500 BTU8. A piston and cylinder arrangement contains saturated water vapor at 110 deg C. The vapor is compressed in a reversible,adiabatic process until the pressure is 1.6 MPa. What is the work done by the system per kilogram of water?a. -330 KJ/kgb.-637 kJ/kgc. -509 KJ/kgd. -432 KJ/kg9. Steam is contained in a 4-liter volume at a pressure of 1.5 MPa and a temperature of 200°C. If the pressure is held constantby expanding the volume while 40 kJ of heat is added, find the final temperature.a. 785 °Cb. 845 °Cc. 512 °Cd. 673 °C10. Eight thousand cu. cm of air in a piston-cylinder arrangementkPa to a pressure of 800 kPa. Find the heat transfer.a. +4.44kJis compressed isothermally at 30°C from a pressure of 2006. +2.22 KJd. -4.44 kJb. -2.22 kJ11. A Carnot engine rejects 80 MJ of energy every hour by transferring heat to a reservoir at 10°C. Determine the powerproduced if the rate of energy addition is 40 kW.a. 22.23 kWb. 8.89 kWc. 13.34 kWd. 17.78 kW12. A gas of mass 0.2 kg is compressed slowly from 150 kPa and 40°C to 600 kPa, in an adiabatic process. Determine thefinal volume if the gas is air.a. 0.0445 cu. m.b. 0.0269 cu. m.c. 0.046 cu. m.d. 0.246 cu. m.

Accepted Answer

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6. A propeller shaft in a ship is 350 mm in diameter. The allowable working stress in shear is 50 MPa and the allowable angle of twist is 1° in 15 diameters of length. If G=85 GPa, determine the maximum torque the shaft can transmit. b. 395 kN-m c. 362 kN-m d. 441 kN-m a. 416 kN-m