Question with Answer of ISRO 2006 Exam : Mechanical Engineeringngineering

Question with Answer of ISRO 2006 Exam : Mechanical Engineering

01. In nodular iron , graphite is in the form of _________

Spheroids .

02. Hardness of steel depends on  _________

       amount of carbon it contains. 

03. Tool high welding current in arc welding would result in _________

    excessive spatter , under cutting along edges , irregular deposits , wasted electrodes .

04. Which of the following processes would produce strongest components ?

  Forging .

05. 

05. Which of the following has maximum hardness ?

  Martensite .

06. The main advantage of line organization is its ________

• Effective command and control
• Defined responsibilities at all levels
• Rigid discipline in the organization

07. The mathematical technique for finding the best use of limited resources in an optimum manner is known as _________

  Linear Programming .

The different types of linear programming are:

• Solving linear programming by Simplex method.
• Solving linear programming using R.
• Solving linear programming by graphical method.
• Solving linear programming with the use of an open solver.

08. Which of the following errors are generally distributed in accordance with the Gaussian distribution ?

  Calibration Errors .

09. If the radius of wire strtchid by a load double , then it's young's modulus will _______

 Young's modulus is material property not the geometric property .

10. Longitudinal stress in a thin cylinder subjected to internal pressure is _________

  half of the hoop stress .

11. If Poisson's ratio for a material is 0.5 , then the elastic modulus for the material is _______

     3 times it's shear modulus .

12. Hydraulic testing of boiling is done at pressure __________

    At 1.5 to 2 times the working pressure .

13. 100 m of water column is equal to _______

      100 KN/m2 .

14. Gantry girders are invariably designed to resist _________

Transverse and lateral loads .

15. A thin circular disc is rolling with a uniform linear speed , along a straight path on a plane surface . Consider the following statements in this regards .

  The center of the disc has zero acceleration .

16. If a number of forces act on a rigid body , each force may be replaced by an equal and parallel force acting through a fixed point , together with a couple . For the rigid body to be in equilibrium _________

   Both resultant force and couple must be zero .

17. Whirling speed of a shaft coincides with the natural frequency of its _________ 

  Transverse vibration .

18. Which one of the following is not a friction clutch ?

  Jaw clutch .

19. Pick-up the wrong statement . A flywheel ___

      Controls the mean speed of rotation .

20. Purpose of using differential gear in automobile is to ________

  help in turning .