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Design Questions Set 7:

Quiz Mode

Which of the following is equal to the product of the diametral pitch and circular pitch?

π × No. of teeth

1/π

Solution:

A single-row deep groove ball bearing has 8 balls of 10 mm diameter. What will be the static capacity of the bearing?
(Assume K = 60 N/mm²)

6780 N

9600 N

8750 N

9400 N

Solution:

A journal bearing has a diameter of 90 mm and a length of 140 mm. It is subjected to a load of 15,000 N. Find the bearing pressure on the bearing in N/mm².

1.19

1.24

1.76

1.58

Solution:

What type of failure will occur when rivets are smaller than necessary?

Tearing of plate between the holes

Tearing of plate between the edges

Shearing of rivet

Crushing of plate

Solution:

Lang lay ropes offer more resistance to ___________ than regular lay ropes.

fatigue failure

abrasive failure

both fatigue and abrasive failure

neither fatigue nor abrasive failure

Solution:

The process of finding the best design parameters that satisfy process/project requirements is called:

Design Formology

Design of methodology

Design of morphology

Design optimization

Solution:

The dimensions of the mating parts, according to the basic hole system, are given as follows:

Hole: 25.00 mm to 25.02 mm
Shaft: 24.95 mm to 24.97 mm

Find the shaft tolerance.

0.05 mm

0.02 mm

- 0.02 mm

0.05 mm

Solution:

The required data for a solid circular shaft are:

Torque to transmit (T) = 50 Nm

Allowable shear stress of the material (τ) = 140 MPa

Factor of safety (n) = 2

Find the minimum allowable design diameter of the shaft (in mm).

4 mm

16 mm

32 mm

64 mm

Solution:

The stress system at a point is given by a normal stress of 200 N/m^2 (tensile) along the X-axis, 75 N/m^2 (tensile) along the Y-axis, and a shear stress of 50 N/m^2 on the X-planes. Find the maximum shear stress.

80.03 N/mm^2

180.03 Pa

40.03 N/m^2

80.03 Pa

Solution:

A weighing machine consists of a spring with a 2 kg pan resting on it. In this condition, the measured value of the spring's length is 200 mm. When a mass of 20 kg is placed on the pan, the length of the spring is reduced to 100 mm. Find the undeformed length and stiffness of the spring.

L = 200 mm, k = 1960 N/m

L = 200 mm, k = 2156 N/m

L = 210 mm, k = 1960 N/m

L = 220 mm, k = 1862 N/m

Design Questions Set 7:

Which of the following is equal to the product of the diametral pitch and circular pitch?

Solution:

A single-row deep groove ball bearing has 8 balls of 10 mm diameter. What will be the static capacity of the bearing?
(Assume K = 60 N/mm²)

Solution:

A journal bearing has a diameter of 90 mm and a length of 140 mm. It is subjected to a load of 15,000 N. Find the bearing pressure on the bearing in N/mm².

Solution:

What type of failure will occur when rivets are smaller than necessary?

Solution:

Lang lay ropes offer more resistance to ___________ than regular lay ropes.

Solution:

The process of finding the best design parameters that satisfy process/project requirements is called:

Solution:

The dimensions of the mating parts, according to the basic hole system, are given as follows:

Hole: 25.00 mm to 25.02 mm
Shaft: 24.95 mm to 24.97 mm

Find the shaft tolerance.

Solution:

The required data for a solid circular shaft are:

Torque to transmit (T) = 50 Nm

Allowable shear stress of the material (τ) = 140 MPa

Factor of safety (n) = 2

Find the minimum allowable design diameter of the shaft (in mm).

Solution:

The stress system at a point is given by a normal stress of 200 N/m^2 (tensile) along the X-axis, 75 N/m^2 (tensile) along the Y-axis, and a shear stress of 50 N/m^2 on the X-planes. Find the maximum shear stress.

Solution:

A weighing machine consists of a spring with a 2 kg pan resting on it. In this condition, the measured value of the spring's length is 200 mm. When a mass of 20 kg is placed on the pan, the length of the spring is reduced to 100 mm. Find the undeformed length and stiffness of the spring.

Solution:

Related Question Sets:

Related Topics:

Design Questions Set 7:

Which of the following is equal to the product of the diametral pitch and circular pitch?

Solution:

A single-row deep groove ball bearing has 8 balls of 10 mm diameter. What will be the static capacity of the bearing? (Assume K = 60 N/mm2)

Solution:

A journal bearing has a diameter of 90 mm and a length of 140 mm. It is subjected to a load of 15,000 N. Find the bearing pressure on the bearing in N/mm2.

Solution:

What type of failure will occur when rivets are smaller than necessary?

Solution:

Lang lay ropes offer more resistance to ___________ than regular lay ropes.

Solution:

The process of finding the best design parameters that satisfy process/project requirements is called:

Solution:

The dimensions of the mating parts, according to the basic hole system, are given as follows: Hole: 25.00 mm to 25.02 mmShaft: 24.95 mm to 24.97 mm Find the shaft tolerance.

Solution:

The required data for a solid circular shaft are: Torque to transmit (T) = 50 Nm Allowable shear stress of the material (τ) = 140 MPa Factor of safety (n) = 2 Find the minimum allowable design diameter of the shaft (in mm).

Solution:

The stress system at a point is given by a normal stress of 200 N/m^2 (tensile) along the X-axis, 75 N/m^2 (tensile) along the Y-axis, and a shear stress of 50 N/m^2 on the X-planes. Find the maximum shear stress.

Solution:

A weighing machine consists of a spring with a 2 kg pan resting on it. In this condition, the measured value of the spring's length is 200 mm. When a mass of 20 kg is placed on the pan, the length of the spring is reduced to 100 mm. Find the undeformed length and stiffness of the spring.

Solution:

Related Question Sets:

Related Topics:

A single-row deep groove ball bearing has 8 balls of 10 mm diameter. What will be the static capacity of the bearing?
(Assume K = 60 N/mm²)

A journal bearing has a diameter of 90 mm and a length of 140 mm. It is subjected to a load of 15,000 N. Find the bearing pressure on the bearing in N/mm².

The dimensions of the mating parts, according to the basic hole system, are given as follows:

Hole: 25.00 mm to 25.02 mm
Shaft: 24.95 mm to 24.97 mm

Find the shaft tolerance.

The required data for a solid circular shaft are:

Torque to transmit (T) = 50 Nm

Allowable shear stress of the material (τ) = 140 MPa

Factor of safety (n) = 2

Find the minimum allowable design diameter of the shaft (in mm).