Question:
Which ONE of the following steps is NOT a part of product concept selection?
Which ONE of the following steps is NOT a part of product concept selection?
Show Hint
Concept selection uses a matrix to rate, rank and combine ideas. A detailed cost model needs a finalized design, so it comes later.
Updated On: Aug 5, 2026
- Preparation of the selection matrix
- Ranking of the concepts
- Combination and improvisation of the concept
- Development of a cost model of the product
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understand what concept selection means:
Concept selection is the stage in product design where a team picks the best idea out of many.
It comes right after concept generation, when several rough ideas for the product already exist.
Step 2: List the real steps used in this stage:
Teams usually build a selection matrix first, a table that lists each concept against a set of criteria.
\[ \text{Build matrix} \to \text{Rate concepts} \to \text{Rank concepts} \to \text{Combine and improve} \]
They score and rank the concepts, then often combine the strong parts of different concepts into a better hybrid one.
Step 3: Check option (A).
Preparing a selection matrix is the first real step of this stage, so this option is a genuine part of concept selection.
Step 4: Check option (B).
Ranking the concepts comes right after rating them in the matrix, so this is also part of the process.
Step 5: Check option (C).
Combining and improving concepts is a known technique used to build a stronger hybrid concept before final selection, so it belongs here too.
Step 6: Check option (D).
A detailed cost model needs a firm design with real dimensions and materials, which only exists after a concept is already chosen.
So building a cost model happens later, in detailed design or costing, not during concept selection.
Final Answer:
Development of a cost model is not a step of concept selection. \[ \boxed{\text{Option (D)}} \]
Concept selection is the stage in product design where a team picks the best idea out of many.
It comes right after concept generation, when several rough ideas for the product already exist.
Step 2: List the real steps used in this stage:
Teams usually build a selection matrix first, a table that lists each concept against a set of criteria.
\[ \text{Build matrix} \to \text{Rate concepts} \to \text{Rank concepts} \to \text{Combine and improve} \]
They score and rank the concepts, then often combine the strong parts of different concepts into a better hybrid one.
Step 3: Check option (A).
Preparing a selection matrix is the first real step of this stage, so this option is a genuine part of concept selection.
Step 4: Check option (B).
Ranking the concepts comes right after rating them in the matrix, so this is also part of the process.
Step 5: Check option (C).
Combining and improving concepts is a known technique used to build a stronger hybrid concept before final selection, so it belongs here too.
Step 6: Check option (D).
A detailed cost model needs a firm design with real dimensions and materials, which only exists after a concept is already chosen.
So building a cost model happens later, in detailed design or costing, not during concept selection.
Final Answer:
Development of a cost model is not a step of concept selection. \[ \boxed{\text{Option (D)}} \]
Was this answer helpful?
0
0
Top GATE PI Questions
- In an air-standard Otto cycle, the pressure and temperature of air just before the compression stroke are 200 kPa and 26.85 °C, respectively. The combustion process is assumed to be a constant volume process, where 1.02 MJ/kg heat is added. The cycle efficiency is 50%. The adiabatic index \(γ\) and specific heat at constant volume \(C_v\) can be considered to be constant during the process (corresponding values taken at the mean cycle temperature).
Assuming that the ideal gas law is applicable, \(γ = \frac 43\) and \(c_v= 0.85\ kJ/kg-K\), the maximum pressure (in MPa) reached during the cycle is _____ . (Rounded off to 1 decimal place) - A metallic cylindrical pressure vessel, used to store compressed air in a plant, has 1 m mean radius and 4 mm wall thickness. The maximum allowable normal and shear stresses in the cylindrical portion of the vessel are 100 MPa and 40 MPa, respectively. Considering only these data in the design, the maximum allowable internal gauge pressure (in MPa) of the compressed air is ______ . (Rounded off to 2 decimal places)
- A flat belt drive with pulley of r = 20 cm radius is designed to transmit 6.283 kW power at 600 RPM. In the figure, τ is the corresponding torque. If the coefficient of static friction between the belt and the pulley is 0.3, then the minimum value of the tightening force F (in kN) required to prevent the belt slip is _____ . (Rounded off 2 decimal places)
- Mild steel plates are welded to make butt joints by arc welding with 85% heat transfer efficiency ignoring other losses. The first weld joint is made by selecting arc voltage of 30 V and current of 180 A with a welding speed of 6 mm/s. Using identical plates, a second weld joint is made with the same arc voltage and a welding speed of 8 mm/s. If both the welds have the same heat input, then the welding current (in A) for the second weld joint is _____. (Answer in integer)
- In a single pass cold rolling operation, a flat plate is reduced to a thickness of 3 mm. In this operation, two rolls of diameter 400 mm each are rotating in opposite direction at 300 RPM, and the elastic deflection of these rolls is negligible. The angle of bite is 10°. If the neutral point is present at an angle of 7° from the exit side, then the thickness of the plate (in mm) at the neutral point is _____ . (Rounded off to 1 decimal place)
View More Questions