Quiz: Elements Of Mechanical Engineering!

20 Questions | Total Attempts: 330

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Quiz: Elements Of Mechanical Engineering!

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Questions and Answers
  • 1. 
    If 4 reactions are acting on a beam, then the system is:
    • A. 

      Unstable & indeterminate

    • B. 

      Stable & indeterminate

    • C. 

       Stable & determinate

    • D. 

      Can’t say

  • 2. 
    If a structure has a total of 10 joints, then what should be the minimum no. of joints in which equilibrium equations should be concurrently satisfied for stability?
    • A. 

      7

    • B. 

      8

    • C. 

      9

    • D. 

      10

  • 3. 
    If a structure has 2j – r no. of members, then it will be: where- j represents no. of joints and r represents no. of external forces.
    • A. 

      Stable

    • B. 

      Unstable

    • C. 

      Unstable

    • D. 

      Depends upon magnitude of load

  • 4. 
    Which of the following material is not used in making trusses?
    • A. 

      Wooden

    • B. 

      Concrete

    • C. 

      Channel

    • D. 

      Metal bars

  • 5. 
    A roller is provided at end of a bridge truss to allow thermal expansion. State whether the above statement is true or false.
    • A. 

      True

    • B. 

      False

  • 6. 
    In a truss, it is assumed that the members are joined by:-
    • A. 

      Rough pins

    • B. 

      Smooth pins

    • C. 

      Either of them

    • D. 

      Neither of them

  • 7. 
    What should be the angle (in degrees) in the given system (part of a bigger system) if both of the members have to be a zero force member?
    • A. 

      90

    • B. 

      60

    • C. 

      37

    • D. 

      53.8

  • 8. 
    In the figure, force is applied at joint c and its magnitude is 10N with a downward direction. What is the total no. of zero force members in the above-given system?
    • A. 

      8

    • B. 

      9

    • C. 

      10

    • D. 

      11

  • 9. 
    A number of the independent equation to be satisfied for static equilibrium in a space structure.
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      6

  • 10. 
    In trusses, a member of the state of tension is subjected to:
    • A. 

      Push

    • B. 

      Pull

    • C. 

      Lateral force

    • D. 

      Either pull or push

  • 11. 
    If a member of a truss is in compression, then what will be the direction of the force that it will apply to the joints?
    • A. 

      Outward

    • B. 

      Inward

    • C. 

      Depends on case

    • D. 

      No force will be there

  • 12. 
    Trusses and frames are different as:
    • A. 

      Trusses can bend, frames can’t

    • B. 

      Both can bend

    • C. 

      None of them can bend

    • D. 

      Trusses can’t bend but a frame can

  • 13. 
    Determine the force in the member BC of the truss shown in Figure:
    • A. 

      707.1 N

    • B. 

      - 707.1 N

    • C. 

      500 N

    • D. 

      -500 N

  • 14. 
    Determine the force in each member AC of the truss shown in Figure.
    • A. 

      500 N

    • B. 

      -500 N

    • C. 

      707.1 N

    • D. 

      -707.1  N

  • 15. 
    Determine the force in each member AD of the truss in Figure.
    • A. 

      - 773 N

    • B. 

      400 N

    • C. 

      500 N

    • D. 

      773 N

  • 16. 
    Determine the vertical reaction force at Point A of the truss shown in Figure.
    • A. 

      200 N

    • B. 

      600 N

    • C. 

      400 N

    • D. 

      500 N

  • 17. 
    Determine support reaction at point B in the given figure: 
    • A. 

      900 N

    • B. 

      500 N

    • C. 

      400 N

    • D. 

      600 N

  • 18. 
    If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of pin-jointed plane frame is given by:
    • A. 

      M+r+2j

    • B. 

      M-r+2j

    • C. 

      M+r-2j

    • D. 

      M-r-2j

  • 19. 
    Degree of kinematic indeterminacy of a pin-jointed plane frame is given by:
    • A. 

      2j-r

    • B. 

      J-2r

    • C. 

      3j-r

    • D. 

      3j-2r

  • 20. 
    A pin-jointed plane frame is unstable if:
    • A. 

      (m+r) < 2j

    • B. 

      (m+r) = 2j

    • C. 

      (m+r) > 2j

    • D. 

      (m-r) = 2j