Fundamentals Of Manufacturing Technology And Economic Analysis Practice Tests

Question 1

A company purchases raw iron ore for 500€ and processes it into steel components sold for 2,500€. If the manufacturing process incurs a labor and energy cost of 800€, what is the total added value created by the manufacturing process?

Accepted Answer

2,000€

Answer

1,200€

Answer

2,500€

Answer

1,700€

Question 2

Which of the following sets of industries belongs exclusively to the secondary sector?

Accepted Answer

Automotive manufacturing, electronics assembly, and chemical processing

Answer

Mining, agriculture, and forestry

Answer

Banking, healthcare, and education

Answer

Fishing, retail, and construction

Question 3

A cylindrical metal rod with an initial diameter of $d_0 = 10	ext{ mm}$ and an initial gauge length of $l_0 = 50	ext{ mm}$ is subjected to a tensile force $P = 20,000	ext{ N}$. Calculate the engineering stress $\sigma$ in MPa.

Accepted Answer

254.65 MPa

Question 4

A material exhibits a linear elastic behavior defined by Hooke's Law $\sigma = E\epsilon$. If the Young's Modulus $E$ is $200	ext{ GPa}$ and the material is strained to $\epsilon = 0.002$, calculate the resulting engineering stress $\sigma$ in MPa.

Accepted Answer

400 MPa

Question 5

A tensile test specimen elongates from $l_0 = 100	ext{ mm}$ to $l_f = 105	ext{ mm}$. What is the engineering strain $e$?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 6

As the temperature of a metallic material increases, its yield strength typically decreases while its ductility increases.

Accepted Answer

True

Answer

False

Question 7

Which of the following factors are primary indicators of a material's mechanical performance during a standard tensile test?

Answer

Yield Strength

Answer

Ultimate Tensile Strength

Answer

Ductility

Answer

Thermal Conductivity

Question 8

If a material has a yield strength of $300	ext{ MPa}$ and is subjected to a stress of $350	ext{ MPa}$, describe the state of the material.

Accepted Answer

The material has undergone plastic deformation.

Question 9

A component requires a production volume of $N = 500$ units. The fixed tooling cost for die casting is $C_f = 10000€$ with a variable cost of $C_v = 5€$ per unit, while CNC machining has $C_f = 500€$ and $C_v = 25€$ per unit. Determine the most cost-effective process.

Accepted Answer

CNC machining

Answer

Die casting

Question 10

A part is designed with a tolerance requirement of $\pm 0.005$ mm. Given that sand casting typically achieves tolerances of $\pm 0.5$ mm and CNC machining achieves $\pm 0.002$ mm, which process is mathematically capable of meeting the design specification?

Accepted Answer

CNC machining

Question 11

Which of the following processes are classified under 'Deformation' or 'Particulate' shaping categories?

Answer

Forging

Answer

Turning

Answer

Powder sintering

Answer

Extrusion

Answer

Sand casting

Question 12

If the material state is liquid/molten and the required production volume is very high, sand casting is generally more efficient than die casting.

Accepted Answer

False

Answer

True

Question 13

Calculate the material waste ratio $W = \frac{M_{initial} - M_{final}}{M_{initial}}$ for a part where $10$ kg of raw material is used and the final part weighs $2$ kg.

Accepted Answer

0.8

Question 14

A design engineer needs to produce a high-strength steel gear. Given the material is a ductile solid and requires high mechanical properties, which process is most appropriate?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 15

If the cost function for a process is $C(N) = 2000 + 10N$ and the budget constraint is $C(N) \leq 7000€$, what is the maximum number of units $N$ that can be produced?

Accepted Answer

Option A

Answer

Option B

Answer

Option C

Answer

Option D

Question 16

A manufacturing process has a processing time $T_o = 1.5$ min, work handling time $T_h = 0.5$ min, and tool handling time $T_t = 0.2$ min. Calculate the total cycle time $T_c$ in minutes.

Accepted Answer

2.2

Question 17

Given a setup time $T_{su} = 120$ minutes and a batch quantity $Q = 60$ units, if the cycle time $T_c = 2.2$ minutes, what is the average time per piece $T_p$?

Accepted Answer

4.2 minutes

Answer

2.2 minutes

Answer

6.2 minutes

Answer

2.0 minutes

Question 18

A product has a material cost $C_m = €5.00$, a labor rate $C_l = €20.00/hr$, an equipment rate $C_{eq} = €30.00/hr$, and a tooling cost $C_t = €0.50$. If the average time per piece $T_p = 0.1$ hours, calculate the total cost per piece $C_{pc}$ in €.

Accepted Answer

10.50

Question 19

If the batch quantity $Q$ increases while setup time $T_{su}$ and cycle time $T_c$ remain constant, the average time per piece $T_p$ will decrease.

Accepted Answer

True

Answer

False

Question 20

A factory produces 400 units per batch with a setup time of 400 minutes. If the cycle time $T_c$ is 3 minutes, what is the hourly production rate $R_p$ in units per hour?

Accepted Answer

15 units/hr

Answer

12 units/hr

Answer

20 units/hr

Answer

10 units/hr

Fundamentals Of Manufacturing Technology And Economic Analysis Practice Tests

Practice Tests

Fundamentals of Manufacturing Technology and Economic Analysis

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