الثلاثاء، 5 مايو، 2015

إختبار علوم الهندسة المدنية




إختبار علوم هندسيه (1)
الهندسه المدنيه    إختبار (1)
الإسم :.....................................................
الزمن ساعه ونصف -   أجب عن جميع الأسئله

معلومات هامه يحتاجها الممتحن
عجلة الجاذبيه الأرضيه = 10 متر/ ث2





 
 



السؤال الأول :
1 / عرف النيوتن؟
............................................................................................................................................................................................................................................................

2 /  قوتان ۳ , ٤ نيوتن بينهما زاويه ٦۰ ° أحسب المحصله مقداراً وإتجاهاً .
............................................................................................................................................................................................................................................................
............................................................................................................................................................................................. ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ...............................................................
3 / أحسب مركبتى الوزن فى إتجاه المستوى وعمودى على المستوى.

  المستوى


                         
               

                    و = ٥۰ نيوتن
.............................................................................................................................. .............................................................................................................................. ..............................................................................................................................

4 / أحسب المحصله مقداراً وإتجاهاً للقوى المؤثره على النقطه ( أ ) .
                              ٦
                     ۲






 
            ٦    ۳   ۳۰ °          ٤   ۳                  
                                  (أ)

                                  ٤
.............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ..............................................................................................................................

5 / سداسى منتظم أ , ب , ج , د , هـ , و . أثرت فيه القوى ۱ , ۲ , ۳ , ٤ , ٥ , ٦   نيوتن فى الإتجاهات التاليه على الترتيب
أ ب , ب ج , ج د , د هـ , هـ و , و أ
أحسب المحصله مقداراً وإتجاهاً .
........................................................................................................................................................................................................................................................................................................................... .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. .............................................................................................................................

6 / القضيب أ ب منتظم متزن أفقياً تحت تأثير وزنه الذى يبلغ ٤۰ ثقل كجم  وقوة الشد (ش) فى الحبل الذى يميل على الأفقى بزاويه ۳۰ °عند النقطه (أ) علماً بأن طول القضيب = 2ل متر . أحسب الأتى :
·       مقدار رد فعل المفصل (ر) عند النقـــــــــــــــــــــطــــــه (ب) .
·       إتجاه رد الفعــــــــل عند (ب) .
·       الشد فى الحبــــــــــــــل (ش)


 

                                    ج
             ش

أ                                   ب

                   و = ٤۰

................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. .............................................................................................................................

7 / أرسم مخطط قوى القص للعارضه الموضحه.


 
           
                ۲۰        ٥۰      ۲۰           أ                                        ب

   
           ۲ م     ۳ م        ۳ م       ۲ م


........................................................................................................................................................................................................................................................................................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ............................................................... ...............................................................

8 /  أرسم مخطط قوى القص للعارضه الموضحه.
 (الأحمال بوحدة الكيلو نيوتن Kn)


 
                                     ٦۰

     أ                                ب

                         ۲ متر     ٥ متر

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