mde 203

In viscosity chart, Raimond-Boyd analysis assumed that the viscosity of the lubricant is

• Constant
• Increasing

• Decreasing

• Vanishing

Two shaft at right angles to each other may be connected by what arrangement?

• Half turn

• ¾ turn

• Quarter turn

• One turn

What type of bolt threaded on both ends and can be used where a through bolt impossible?

• Coupling

• Stud bolt

• Carriage bolt

• Machine bolt

In what country that the present theory of hydrodynamic lubrication originates from?

• China

• Germany

• US

• England

What do you call the phenomenon occurring when two touching surfaces have a high contact pressure and when these surfaces have minute relative motion?

• Prestressing

• Friction

• Fretting

• Carving

Which of the following is the type of failure due to unstability?

• Buckling

• Stability

• Slenderness formulas

• Euler formula

Which of the following is not a form of bearing lubrication?

• Liquid-film lubrication

• Hydrodynamic lubrication

• Hydrostatic lubrication

• Solid-film lubrication

What is the minimum number of teeth on a smaller sprocket for low speed?

• 11

• 17

• 21

• 12

What is the term applied to the reciprocal of the velocity ratio?

• Train value

• Modular value

• Ratio factor

• None of these

A lubrication where lubricant is introduced between surfaces which are in rolling contact such as roller gears or rolling bearings?

• Hydrostatic lubrication

• Hydrodynamic lubrication

• Elastohydrodynamic lubrication

• Solid-film lubrication