دورات هندسية

 

 

كورس في Alignment for shaft

النتائج 1 إلى 3 من 3
  1. [1]
    الصورة الرمزية مهنديان
    مهنديان
    مهنديان غير متواجد حالياً

    عضو فعال

    تاريخ التسجيل: Apr 2007
    المشاركات: 133
    Thumbs Up
    Received: 4
    Given: 0

    كورس في Alignment for shaft

    السلام عليكم
    اخوبي واخواتي اود ان اساهم في نشر ثقافةAlignment of shaft والتي اصبحت حكرا على الشركات الاجنبية هذه اسالة فكروا في حلها وساوافيكم لاحقا بالحل
    ارجو منك الدعاء
    COUPLING AND SHAFT ALIGNMENT






    COURSE PRE-ASSESSMENT



    Name:Date:

    Score: Instructor/Scorer:





    1. Name two causes of shaft misalignment?

    A. Improper installation and alignment.
    B. Piping strain and settling.
    C Torsional movement and bolt torque.
    D Misbored couplings and settling.

    2. What are two indications of misalignment?

    A Bearing wear and noise.
    B Bearing wear and lack of vibration.
    C Coupling wear and high flow rates.
    D High flow rates and low pressures.

    3. What two types of tools would be used to measure coupling gap clearance?

    A Machinist scale and thickness gauge.
    B Thickness gauge and feeler gauge.
    C Sliding parallels and a 6 inch scale.
    D Inside micrometers and outside micrometer.

    4. How many measurements would be used to find the angular misalignment of a coupling?

    A One
    B Two
    C Three
    D Four

    5. Define "sag-free" as used in shaft alignment?

    A No bending in the shafts
    B No bending in the measuring brackets.
    C No bending of the base plates.
    D No bending of the attached piping.


    6. When using a dial indicator, how far should the plunger be depress for accurate measurement?

    A 1/3 the plungers travel.
    B ¼ the plungers travel
    C ½ the plungers travel
    D ¾ the plungers travel

    7. Name the two types of soft foot as seen in shaft alignment?

    A Angular bend and twist
    B Downward bend and twist
    C Downward bend and upward bend
    D Upward bend and twist.


    8. What measuring tool could be used to find a soft foot problem?

    A Micrometer
    B Machinist scale
    C A 12 inch ruler
    D Feeler gauges




    9. Why should the largest soft foot problem be corrected first?

    A It is a starting point for shaft alignment
    B It will eliminate smaller soft foot problems
    C Corrected soft foot problems will bring the shaft into alignment
    D The largest soft foot problem need not be corrected first as it is only a minor problem

    10. What is the minim amount of bar sag acceptable in shaft alignment procedures?

    A .001
    B .002
    C .003
    D .004

    11. Define the term bolt binding as used in shaft alignment?

    A Bolts that are fully tighten
    B Bolts that have no threads left
    C Bolts the are bent
    D Bolts that have no clearance for machine movement

    12. When measuring angular misalignment what two clock locations would be used?

    A 9 :00 and 4 :00, 3 :00 and 7 :00
    B 12 :00 and 5 :00, 1 :00 and 8 :00
    C 3:00 and 9 :00, 12 :00 and 6 :00
    D 7 :00 and 2 :00, 11 :00 and 4 :00


    13. What are two methods used to calculate machine movement in shaft alignment?

    A Visual and mathematical
    B Mathematical and graphical
    C Mathematical and visual
    D Graphical and visual


    14. Define thermal growth as it is used in shaft alignment?

    A Heat added to a machine when operating temperature has been reached
    B Heat added to a machine before operating temperature has been reached
    C Heat added to a machine from surrounding equipment
    D Heat removed from a machine after operating temperature is reached

    15. What are the two major types or categories of couplings

    A Rigid and flanged
    B Flexible and ribbed
    C Flexible and spring grid
    D Rigid and flexible

    16. Name two types of flexible coupling?

    A Gear and ribbed
    B Chain and flanged
    C Metal disk and elastomeric
    D Ribbed and flanged

    17. How is shaft alignment on a machine with more than four feet accomplished?

    A Align only front and rear feet
    B Align only the rear and middle feet
    C Align all feet with the same method as a machine with four feet
    D Middle feet need not be aligned as they have no bearing on shaft misalignment

    18. Define the term soft foot as used in shaft alignment?

    A Soft material used in the machines base.
    B A condition where the machines feet are not true with the machines base.
    C Soft material used in the machines feet.
    D A condition where the machines feet are in line with the machines base.

    19. What is the advantage of flexible couplings over rigid couplings?

    A Allows for thermal expansion
    B Allows a large degree of misalignment
    C Will operate with less heat
    D Have less vibration.

    20. Name two causes of shaft misalignment?

    A. Improper installation and alignment.
    B. Piping strain and settling.
    C Torsional movement and bolt torque.
    D Misbored couplings and settling.

  2. [2]
    sahlikam
    sahlikam غير متواجد حالياً
    جديد


    تاريخ التسجيل: Oct 2010
    المشاركات: 1
    Thumbs Up
    Received: 0
    Given: 0
    Thanks a lot

    0 Not allowed!



  3. [3]
    fayez.
    fayez. غير متواجد حالياً
    عضو


    تاريخ التسجيل: Jan 2011
    المشاركات: 11
    Thumbs Up
    Received: 0
    Given: 0
    في طريقة ثانيه افضل من ال dial indicator
    اسمها laser alognment ياليت تتكلم عنها

    0 Not allowed!



  
الكلمات الدلالية لهذا الموضوع

عرض سحابة الكلمة الدلالية

RSS RSS 2.0 XML MAP HTML