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Question 431

RRB JE 2026• Technical Abilities

Which of the following plots is used for the classification of types of facilities and layouts used for different levels of the production?

  1. AOption (a)

    Production quantity vs. product cost plot

  2. BOption (b)

    Production mass vs. product variety plot

  3. COption (c)

    Product cost vs. product variety plot

  4. DOption (d)

    Production quantity vs. product variety plot

View answer & explanation

Correct answer

Answer: (a)A.

Production quantity vs. product cost plot

Explanation not yet available.

Question 432

RRB JE 2026• Technical Abilities

During oxy-acetylene gas welding, improper adjustment of the neutral flame can most likely result in which weld defect on stainless steel?

  1. AOption (a)

    Excessive oxidation at the weld bead surface

  2. BOption (b)

    Occurrence of incomplete root fusion in the joint

  3. COption (c)

    Formation of significant undercut along the joint

  4. DOption (d)

    Development of porosity within the weld metal

View answer & explanation

Correct answer

Answer: (a)A.

Excessive oxidation at the weld bead surface

Explanation not yet available.

Question 433

RRB JE 2026• Technical Abilities

Which of the following is a necessary modification in Newton’s second law to derive D'Alembert’s principle for a dynamic system?

  1. AOption (a)

    Include only gravitational forces in the analysis

  2. BOption (b)

    Incorporate a fictitious force equal to "minus mass times acceleration"

  3. COption (c)

    Replace all forces with their average values

  4. DOption (d)

    Omit all resistive forces acting on the system

View answer & explanation

Correct answer

Answer: (a)A.

Include only gravitational forces in the analysis

Explanation not yet available.

Question 434

RRB JE 2026• Technical Abilities

In malleability, material is subjected to which of the following stresses?

  1. AOption (a)

    Compressive stress

  2. BOption (b)

    Tensile stress

  3. COption (c)

    Fatigue stress

  4. DOption (d)

    Shear stress

View answer & explanation

Correct answer

Answer: (a)A.

Compressive stress

Explanation not yet available.

Question 435

RRB JE 2026• Technical Abilities

If a block slides down a rough plane inclined at 30° with a coefficient of friction of 0.2, the net acceleration is:

  1. AOption (a)

    0.326 g

  2. BOption (b)

    Zero

  3. COption (c)

    0.676 g

  4. DOption (d)

    0.5 g

View answer & explanation

Correct answer

Answer: (a)A.

0.326 g

Explanation not yet available.

Question 436

RRB JE 2026• Technical Abilities

Which defect results from improper shielding during the welding process and causes gas pockets in the weld?

  1. AOption (a)

    Porosity

  2. BOption (b)

    Lack of fusion

  3. COption (c)

    Slag inclusion

  4. DOption (d)

    Undercut

View answer & explanation

Correct answer

Answer: (a)A.

Porosity

Explanation not yet available.

Question 437

RRB JE 2026• Technical Abilities

Under which scenario is a body on an inclined plane most likely to slip when subjected to a parallel force?

  1. AOption (a)

    Normal reaction is greater than weight

  2. BOption (b)

    Parallel force is opposite to frictional force

  3. COption (c)

    Coefficient of friction is less than tangent of inclination

  4. DOption (d)

    Frictional force equals weight of the body

View answer & explanation

Correct answer

Answer: (a)A.

Normal reaction is greater than weight

Explanation not yet available.

Question 438

RRB JE 2026• Technical Abilities

A force of 10 N acts along a line OB, which makes an angle of 60° with the horizontal line OA. What is the component of the force along the direction of the acute angle bisector of angle ∠AOB?

  1. AOption (a)

    10 sin 30° N

  2. BOption (b)

    10 cos 60° N

  3. COption (c)

    10 N

  4. DOption (d)

    10 cos 30° N

View answer & explanation

Correct answer

Answer: (a)A.

10 sin 30° N

Explanation not yet available.

Question 439

RRB JE 2026• Technical Abilities

Which of the following properties is used as the basis for temperature measurement in constant volume thermometers?

  1. AOption (a)

    Pressure

  2. BOption (b)

    Enthalpy

  3. COption (c)

    Volume

  4. DOption (d)

    Entropy

View answer & explanation

Correct answer

Answer: (a)A.

Pressure

Explanation not yet available.

Question 440

RRB JE 2026• Technical Abilities

In a two-stroke diesel engine, the exhaust gases are removed through:

  1. AOption (a)

    Ports

  2. BOption (b)

    Carburetor

  3. COption (c)

    Spark plug

  4. DOption (d)

    Valves

View answer & explanation

Correct answer

Answer: (a)A.

Ports

Explanation not yet available.
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