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Problem_Solving_02

📌 We have designed a comprehensive machine design test consisting of 20 questions to assess your knowledge and understanding of various topics related to machine design. This test aims to evaluate your proficiency in areas such as mechanical components, materials selection, stress analysis, kinematics, and more. By taking this test, you can determine your level of comprehension and identify areas that may require further study. Complete this test to gauge your mastery in machine design and enhance your understanding of the subject.

Problem_Solving_02
20問 • 1年前📌 We have designed a comprehensive machine design test consisting of 20 questions to assess your knowledge and understanding of various topics related to machine design. This test aims to evaluate your proficiency in areas such as mechanical components, materials selection, stress analysis, kinematics, and more. By taking this test, you can determine your level of comprehension and identify areas that may require further study. Complete this test to gauge your mastery in machine design and enhance your understanding of the subject.
  • Jacky Shane Luyas Buhia
    • 通報

    問題一覧

  • 1

    The power required to shear a plate 50 mm thick for 10 seconds is 5 kW. If ultimate strength of plate material is 420 Mpa. How wide should the plate be ?

    D. 95.23 mm

  • 2

    A car travels with an initial velocity of 10 m/s or 36 km/hr. If it is decelerating at the rate of 3 m/s², how far in meters does it travel before stopping?

    A. 17

  • 3

    A block weighing 56 lbs rest on horizontal surface. The force needed to move along the surface is 20 lbs. Determine the coefficient of friction.

    C. 0.36

  • 4

    A journal bearing with diameter of 76.2 mm is subjected to a load of 4900 N while rotating at 200 rpm. If it's coefficient of friction is 0.02 and L/D = 2.5, find its projected area in mm².

    D. 14,516

  • 5

    A horizontal cantilever beam, 16 ft long is subjected to a load of 500 lb located to its center. The dimension of the beam is 2×4 inches respectively, w = 100 lb/ft, find its flexural stress

    A. 3150 psi

  • 6

    A 10 m simply supported beam with uniform load of 3 kN/m from right end to left end has a maximum deflection of: ( El = 12,000 kN.m² )

    B. 32.55 m

  • 7

    A 10 m cantilever beam has a concentrated load of 10 kN at the free end. Find the maximum deflection of the beam. ( El = 7,000 kN.m² )

    A. 476.20 mm

  • 8

    A 14 m cantilever beam has a load of 16 kN 6 m from the fixed end. Find the maximum slope of the beam. (El = 6000 kN.m²)

    B. 0.048 rad

  • 9

    What pressure is required for punching a hole 2 inches in diameter thru a 1/4 inch steel plate?

    D. 40 tons

  • 10

    Compute how many 3/8 inch diameter set screws required to transmit 3 Hp at a shaft speed of 1000 rpm. The shaft diameter is 1 inch.

    B. 2

  • 11

    What power would a short shaft, 50 mm in diameter, transmit at 400 rpm?

    B. 60 kw

  • 12

    What would be the diameter of power-transmitting shaft to transmit 150 kw at 500 rpm?

    B. 81 mm

  • 13

    If a cube of mass 200 kg is being moved on a conveyor belt at a speed of 3 m/s, what is the kinetic energy of the cube?

    B. 900 J

  • 14

    A casting of mass 150 kg is lifted 4 meters in 15 seconds by means of a crane. What is the power?

    A. 392 watts

  • 15

    What horsepower would be transmitted by a short shaft, 2 inches in diameter, carrying but two pulleys too close to bearings if the shaft makes 300 pm?

    C. 63 hp

  • 16

    What force is necessary to punch a 30 mm hole in 12.5 mm thick plate if ultimate shear stress is 410 Mpa?

    C. 483 KN

  • 17

    What force  P is  required  to  punch  a  1/2  in.  hole  on  a 3/8  in.  thick plate. If the  ultimate shear strength of the  plate is 42,000 psi ?

    D. 24 740 lbs

  • 18

    A cylindrical tank with 10 inches inside diameter contains oxygen gas at 2500 psi. Calculate the required wall thickness in millimeter under stress of 28000 psi.

    B. 11.34

  • 19

    Compute the safe wall thickness of a 76.2 cm diameter steel tank. The tank is subjected to 7.33 Mpa pressure and the steel material has Yield stress of 215.4 Mpa. The factor of safety to use is 3.

    B. 3.89 cm

  • 20

    A 3 in diameter short shaft carrying pulleys close to the bearings transmit how much horsepower if the shaft makes 280 rpm?

    C. 199 hp

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    問題一覧

  • 1

    The power required to shear a plate 50 mm thick for 10 seconds is 5 kW. If ultimate strength of plate material is 420 Mpa. How wide should the plate be ?

    D. 95.23 mm

  • 2

    A car travels with an initial velocity of 10 m/s or 36 km/hr. If it is decelerating at the rate of 3 m/s², how far in meters does it travel before stopping?

    A. 17

  • 3

    A block weighing 56 lbs rest on horizontal surface. The force needed to move along the surface is 20 lbs. Determine the coefficient of friction.

    C. 0.36

  • 4

    A journal bearing with diameter of 76.2 mm is subjected to a load of 4900 N while rotating at 200 rpm. If it's coefficient of friction is 0.02 and L/D = 2.5, find its projected area in mm².

    D. 14,516

  • 5

    A horizontal cantilever beam, 16 ft long is subjected to a load of 500 lb located to its center. The dimension of the beam is 2×4 inches respectively, w = 100 lb/ft, find its flexural stress

    A. 3150 psi

  • 6

    A 10 m simply supported beam with uniform load of 3 kN/m from right end to left end has a maximum deflection of: ( El = 12,000 kN.m² )

    B. 32.55 m

  • 7

    A 10 m cantilever beam has a concentrated load of 10 kN at the free end. Find the maximum deflection of the beam. ( El = 7,000 kN.m² )

    A. 476.20 mm

  • 8

    A 14 m cantilever beam has a load of 16 kN 6 m from the fixed end. Find the maximum slope of the beam. (El = 6000 kN.m²)

    B. 0.048 rad

  • 9

    What pressure is required for punching a hole 2 inches in diameter thru a 1/4 inch steel plate?

    D. 40 tons

  • 10

    Compute how many 3/8 inch diameter set screws required to transmit 3 Hp at a shaft speed of 1000 rpm. The shaft diameter is 1 inch.

    B. 2

  • 11

    What power would a short shaft, 50 mm in diameter, transmit at 400 rpm?

    B. 60 kw

  • 12

    What would be the diameter of power-transmitting shaft to transmit 150 kw at 500 rpm?

    B. 81 mm

  • 13

    If a cube of mass 200 kg is being moved on a conveyor belt at a speed of 3 m/s, what is the kinetic energy of the cube?

    B. 900 J

  • 14

    A casting of mass 150 kg is lifted 4 meters in 15 seconds by means of a crane. What is the power?

    A. 392 watts

  • 15

    What horsepower would be transmitted by a short shaft, 2 inches in diameter, carrying but two pulleys too close to bearings if the shaft makes 300 pm?

    C. 63 hp

  • 16

    What force is necessary to punch a 30 mm hole in 12.5 mm thick plate if ultimate shear stress is 410 Mpa?

    C. 483 KN

  • 17

    What force  P is  required  to  punch  a  1/2  in.  hole  on  a 3/8  in.  thick plate. If the  ultimate shear strength of the  plate is 42,000 psi ?

    D. 24 740 lbs

  • 18

    A cylindrical tank with 10 inches inside diameter contains oxygen gas at 2500 psi. Calculate the required wall thickness in millimeter under stress of 28000 psi.

    B. 11.34

  • 19

    Compute the safe wall thickness of a 76.2 cm diameter steel tank. The tank is subjected to 7.33 Mpa pressure and the steel material has Yield stress of 215.4 Mpa. The factor of safety to use is 3.

    B. 3.89 cm

  • 20

    A 3 in diameter short shaft carrying pulleys close to the bearings transmit how much horsepower if the shaft makes 280 rpm?

    C. 199 hp