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Design Questions Set 31:

Quiz Mode

For distortion energy theory, shape of the region of safety on σ1, σ2 coordinate system is

Square

Hexagon

Ellipse

Circle

Solution:

Given that the 3 principal stresses σ1 = σ2 = σ3 = 30 MPa and the yield strength Sy = 100 MPa, calculate the factor of safety.

1.14

1.47

∞

Solution:

Which of the following metals is suitable for making bearings that are subjected to heavy loads?

Monel metal

Phosphor bronze

White metal

Silicon bronze

Solution:

Two steel rods connected by cotter joints are subjected to a force of 60 kN each. What is the minimum diameter required for the rods?

28 mm

26 mm

32 mm

30 mm

Solution:

In an optimization process, which expression is used to represent the ranges of certain parameters?

Limit equation

Cost and weight

Stress equation

Shape and dimension

Solution:

What type of gear is used to connect two shafts that are neither intersecting nor parallel?

Hypoid gears

Worm gears

Both hypoid and worm gears

Neither hypoid nor worm gears

Solution:

Calculate the diameter of the pin based on shear stress considerations, given the maximum allowable shear stress is 100 N/mm² and an axial tensile force of 6 kN is acting on the rod.

40.27 mm

38.19 mm

41.27 mm

39.19 mm

Solution:

Consider the following data for a roller bearing:

Bearing code = 6306

Dynamic load capacity = 22 kN

Rotational speed = 600 RPM

Bearing life = 2000 hours

Find the maximum radial load on the bearing. (Take 72^1/3 = 4.16)

6.25 kN

5.29 kN

3.60 kN

4.16 kN

Solution:

The diameter of a shaft transmitting power of 35 kW is calculated to be 60 mm according to the maximum principal stress theory and 65 mm according to the maximum shear stress theory. What will be the shaft diameter to transmit this power?

60 mm

65 mm

54 mm

39 mm

Solution:

In a 360° hydrodynamic bearing, lubricating oil with a mass density of 700 kg/m³ has a flow rate of 5000 mm³/s. Find the rate of heat dissipated in the bearing if the temperature rises by 5°C. Neglecting side leakage. The specific heat of the oil is 1.45 kJ/kg°C.

0.0253 kW

0.0210 kW

0.0321 kW

0.0143 kW

Design Questions Set 31:

For distortion energy theory, shape of the region of safety on σ1, σ2 coordinate system is

Solution:

Given that the 3 principal stresses σ1 = σ2 = σ3 = 30 MPa and the yield strength Sy = 100 MPa, calculate the factor of safety.

Solution:

Which of the following metals is suitable for making bearings that are subjected to heavy loads?

Solution:

Two steel rods connected by cotter joints are subjected to a force of 60 kN each. What is the minimum diameter required for the rods?

Solution:

In an optimization process, which expression is used to represent the ranges of certain parameters?

Solution:

What type of gear is used to connect two shafts that are neither intersecting nor parallel?

Solution:

Calculate the diameter of the pin based on shear stress considerations, given the maximum allowable shear stress is 100 N/mm² and an axial tensile force of 6 kN is acting on the rod.

Solution:

Consider the following data for a roller bearing:

Bearing code = 6306

Dynamic load capacity = 22 kN

Rotational speed = 600 RPM

Bearing life = 2000 hours

Find the maximum radial load on the bearing. (Take 72^1/3 = 4.16)

Solution:

The diameter of a shaft transmitting power of 35 kW is calculated to be 60 mm according to the maximum principal stress theory and 65 mm according to the maximum shear stress theory. What will be the shaft diameter to transmit this power?

Solution:

In a 360° hydrodynamic bearing, lubricating oil with a mass density of 700 kg/m³ has a flow rate of 5000 mm³/s. Find the rate of heat dissipated in the bearing if the temperature rises by 5°C. Neglecting side leakage. The specific heat of the oil is 1.45 kJ/kg°C.

Solution:

Related Question Sets:

Related Topics:

Design Questions Set 31:

For distortion energy theory, shape of the region of safety on σ1, σ2 coordinate system is

Solution:

Given that the 3 principal stresses σ1 = σ2 = σ3 = 30 MPa and the yield strength Sy = 100 MPa, calculate the factor of safety.

Solution:

Which of the following metals is suitable for making bearings that are subjected to heavy loads?

Solution:

Two steel rods connected by cotter joints are subjected to a force of 60 kN each. What is the minimum diameter required for the rods?

Solution:

In an optimization process, which expression is used to represent the ranges of certain parameters?

Solution:

What type of gear is used to connect two shafts that are neither intersecting nor parallel?

Solution:

Calculate the diameter of the pin based on shear stress considerations, given the maximum allowable shear stress is 100 N/mm2 and an axial tensile force of 6 kN is acting on the rod.

Solution:

Consider the following data for a roller bearing: Bearing code = 6306 Dynamic load capacity = 22 kN Rotational speed = 600 RPM Bearing life = 2000 hours Find the maximum radial load on the bearing. (Take 721/3 = 4.16)

Solution:

The diameter of a shaft transmitting power of 35 kW is calculated to be 60 mm according to the maximum principal stress theory and 65 mm according to the maximum shear stress theory. What will be the shaft diameter to transmit this power?

Solution:

In a 360° hydrodynamic bearing, lubricating oil with a mass density of 700 kg/m³ has a flow rate of 5000 mm³/s. Find the rate of heat dissipated in the bearing if the temperature rises by 5°C. Neglecting side leakage. The specific heat of the oil is 1.45 kJ/kg°C.

Solution:

Related Question Sets:

Related Topics:

Calculate the diameter of the pin based on shear stress considerations, given the maximum allowable shear stress is 100 N/mm² and an axial tensile force of 6 kN is acting on the rod.

Consider the following data for a roller bearing:

Bearing code = 6306

Dynamic load capacity = 22 kN

Rotational speed = 600 RPM

Bearing life = 2000 hours

Find the maximum radial load on the bearing. (Take 72^1/3 = 4.16)