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Question 421

RRB JE 2026• Technical Abilities

Which component is essential in a profile projection method for accurately displaying the outline of a machine part?

  1. AOption (a)

    Curved screen with angled light projection

  2. BOption (b)

    Non-reflective surface with ambient room lighting

  3. COption (c)

    Simple lamp with diffused translucent screen

  4. DOption (d)

    Collimated light source with precise screen alignment

View answer & explanation

Correct answer

Answer: (a)A.

Curved screen with angled light projection

Explanation not yet available.

Question 422

RRB JE 2026• Technical Abilities

Which of the following is NOT a type of water-based cutting fluid?

  1. AOption (a)

    Dispersion

  2. BOption (b)

    Solution

  3. COption (c)

    Emulsion

  4. DOption (d)

    Grease

View answer & explanation

Correct answer

Answer: (a)A.

Dispersion

Explanation not yet available.

Question 423

RRB JE 2026• Technical Abilities

The most effective method for applying cutting fluid during high-speed machining is:

  1. AOption (a)

    Atomized spray

  2. BOption (b)

    Drip system

  3. COption (c)

    Flooding

  4. DOption (d)

    Hand pouring

View answer & explanation

Correct answer

Answer: (a)A.

Atomized spray

Explanation not yet available.

Question 424

RRB JE 2026• Technical Abilities

Which component in a cylindrical grinding machine provides longitudinal movement to the workpiece?

  1. AOption (a)

    Spindle for work rotation

  2. BOption (b)

    Table with sliding mechanism

  3. COption (c)

    Coolant system with pump

  4. DOption (d)

    Wheel guard for safety

View answer & explanation

Correct answer

Answer: (a)A.

Spindle for work rotation

Explanation not yet available.

Question 425

RRB JE 2026• Technical Abilities

The area under load v/s elongation diagram for a ductile material upto fracture indicates _____.

  1. AOption (a)

    Resilience

  2. BOption (b)

    Toughness

  3. COption (c)

    Modulus of toughness

  4. DOption (d)

    Modulus of resilience

View answer & explanation

Correct answer

Answer: (a)A.

Resilience

Explanation not yet available.

Question 426

RRB JE 2026• Technical Abilities

A force of 100 N acting on a rigid body is moved to another point along the same line of action. What is the effect on the external equilibrium of the body?

  1. AOption (a)

    The external equilibrium remains unchanged

  2. BOption (b)

    The effect depends on the material

  3. COption (c)

    The force magnitude becomes zero

  4. DOption (d)

    The external equilibrium changes

View answer & explanation

Correct answer

Answer: (a)A.

The external equilibrium remains unchanged

Explanation not yet available.

Question 427

RRB JE 2026• Technical Abilities

In ABC analysis, the letter 'C' is designated to:

  1. AOption (a)

    high valued items, smaller in number

  2. BOption (b)

    high valued items, larger in number

  3. COption (c)

    low valued items, larger in number

  4. DOption (d)

    low valued items, smaller in number

View answer & explanation

Correct answer

Answer: (a)A.

high valued items, smaller in number

Explanation not yet available.

Question 428

RRB JE 2026• Technical Abilities

What is the nature of strain as a physical quantity?

  1. AOption (a)

    It is dimensionless.

  2. BOption (b)

    It has units of length.

  3. COption (c)

    It has units of volume.

  4. DOption (d)

    It has units of force per area.

View answer & explanation

Correct answer

Answer: (a)A.

It is dimensionless.

Explanation not yet available.

Question 429

RRB JE 2026• Technical Abilities

In ___________ process, heat is added during Otto cycle.

  1. AOption (a)

    Isentropic compression

  2. BOption (b)

    Constant volume

  3. COption (c)

    Constant pressure

  4. DOption (d)

    Isothermal expansion

View answer & explanation

Correct answer

Answer: (a)A.

Isentropic compression

Explanation not yet available.

Question 430

RRB JE 2026• Technical Abilities

Which of the following best describes the purpose of ABC analysis in inventory management?

  1. AOption (a)

    To store inventory items according to their physical characteristics in the warehouse

  2. BOption (b)

    To group inventory items based on supplier location and delivery schedule

  3. COption (c)

    To organize inventory items solely by their production shelf life in warehouse

  4. DOption (d)

    To categorize inventory items based on significance in value and usage frequency

View answer & explanation

Correct answer

Answer: (a)A.

To store inventory items according to their physical characteristics in the warehouse

Explanation not yet available.
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