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    Forming Questions and Answers - Principle of Rol Pass: Advertisement

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    rahma
    This document contains 10 multiple choice questions about principles of roll passing. It tests knowledge about how rolling materials at high temperatures reduces strength, the different tensions experienced by materials entering and exiting rollers, how front tension increases with higher take up reel speed, the types of passes and thread rolling machines, that thread rolling produces little chip formation, and general production rates of thread rolling being around 2000 pieces per minute.

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    Forming Questions and Answers - Principle of Rol Pass: Advertisement

    Uploaded by

    rahma
    17 views4 pages
    This document contains 10 multiple choice questions about principles of roll passing. It tests knowledge about how rolling materials at high temperatures reduces strength, the different tensions experienced by materials entering and exiting rollers, how front tension increases with higher take up reel speed, the types of passes and thread rolling machines, that thread rolling produces little chip formation, and general production rates of thread rolling being around 2000 pieces per minute.

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    Original Title

    Forming Online Test - Sanfoundry

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    This document contains 10 multiple choice questions about principles of roll passing. It tests knowledge about how rolling materials at high temperatures reduces strength, the different tensions experienced by materials entering and exiting rollers, how front tension increases with higher take up reel speed, the types of passes and thread rolling machines, that thread rolling produces little chip formation, and general production rates of thread rolling being around 2000 pieces per minute.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    17 views4 pages

    Forming Questions and Answers - Principle of Rol Pass: Advertisement

    Uploaded by

    rahma
    This document contains 10 multiple choice questions about principles of roll passing. It tests knowledge about how rolling materials at high temperatures reduces strength, the different tensions experienced by materials entering and exiting rollers, how front tension increases with higher take up reel speed, the types of passes and thread rolling machines, that thread rolling produces little chip formation, and general production rates of thread rolling being around 2000 pieces per minute.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 4

    Forming Questions and Answers – Principle of Rol

    Pass
    This set of Forming online test focuses on “Principle Of Roll Pass”.

    1. How is the strength of the material, which is to be rolled, reduced?


    a) Rolling at low temperatures
    b) Rolling at high temperatures
    c) Treating with ozone
    d) Treating with carbon

    View Answer

    Answer: b
    Explanation: When the material to be squeezed is rolled at high temperatures, the strength of the
    material is found to decrease.

    advertisement

    2. When the material is entering the roller, what is the tension at the entry zone called?
    a) Front tension
    b) Above tension
    c) Back tension
    d) Beneath tension

    View Answer

    Answer: c
    Explanation: When the material is entering the roller, the tension experienced at the entering zone is
    called as back tension.

    3. When the material is exiting the roller, what is the tension at the exit zone called?
    a) Front tension
    b) Above tension
    c) Back tension
    d) Beneath tension

    View Answer

    Answer: a
    Explanation: None.

    4. What increases when the take up reel rotates at a high speed?


    a) Front tension
    b) Above tension
    c) Back tension
    d) Beneath tension

    View Answer

    Answer: a
    Explanation: Among front tension, above tension, back tension and beneath tension, front tension is
    found to increase when the take up wheel rotates at a high speed.

    5. Which of the following is not a thread rolling machine?


    a) Cylindrical die machine
    b) Reciprocating flat die machine
    c) Rotary planetary machines
    d) Quick return motion machine

    View Answer

    Answer: d
    Explanation: Among the following, a quick return motion machine is not any type of thread rolling
    machine, while the remaining are thread rolling machines.

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    6. Which of the following is not a type of a pass?
    a) Roll down pass
    b) Starter pass
    c) Leader pass
    d) Finishing pass

    View Answer

    Answer: b
    Explanation: Among the following types of passes, starter pass is not any type of pass, while the
    remaining three are different types of passes.

    7. Thread rolling has a lot of chip formation.


    a) True
    b) False

    View Answer

    Answer: b
    Explanation: Thread rolling has it as one of its advantages, that there is no chip formation taking
    place, avoiding a lot of materials to be wasted.

    8. How many dies are used in reciprocating flat die machines?


    a) 2
    b) 3
    c) 4
    d) 5

    View Answer

    Answer: a
    Explanation: In a reciprocating flat die machine, there are only two dies which are used, one of them
    is stationery, while the other is reciprocating.

    9. On what does the reciprocating die stroke depend on?


    a) Temperature
    b) Pressure
    c) Thread diameter
    d) Die radius

    View Answer

    Answer: c
    Explanation: In a reciprocating flat die machine, the reciprocating die stroke depends upon the
    thread diameter, and there are 2 dies used in this apparatus, out of which, one is stationery.

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    10. What is the general production rate in thread rolling?


    a) 1000 pieces per minute
    b) 2000 pieces per minute
    c) 3000 pieces per minute
    d) 4000 pieces per minute

    View Answer

    Answer: b
    Explanation: Thread rolling is considered to be one of the fastest methods of manufacturing threads
    The rate of production is as high as 2000 pieces per minute.

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