Mechanical Engineering · all questions

Machine Design
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

605

Questions

10/31

Page

Pick an option on a question to see the right answer and solution.

Q181

Cold working

Select an option to see the answer and solution.

Q182

A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is

τ

. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

Select an option to see the answer and solution.

Q183

The shock resistance of steel is increased by adding

Select an option to see the answer and solution.

Q184

While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

Select an option to see the answer and solution.

Q185

At low temperatures (say 75°C) the notched bar impact value of steel

Select an option to see the answer and solution.

Q186

Which of the following statement is correct, for two shafts connected in parallel?

Select an option to see the answer and solution.

Q187

The value of stress concentration factor depends upon

Select an option to see the answer and solution.

Q188

Which is correct statement? Stress concentration in cyclic loading is

Select an option to see the answer and solution.

Q189

Stress concentration factor is defined as the ratio of

Select an option to see the answer and solution.

Q190

If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

Select an option to see the answer and solution.

Q191

Shaft coupling is used in machinery to

Select an option to see the answer and solution.

Q192

The stress induced in the belt is,

Select an option to see the answer and solution.

Q193

A connecting rod subjected to an axial load may buckle with

Select an option to see the answer and solution.

Q194

Wire ropes as compared to cotton ropes

Select an option to see the answer and solution.

Q195

In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of

Select an option to see the answer and solution.

Q196

A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

Select an option to see the answer and solution.

Q197

In second type of levers,

Select an option to see the answer and solution.

Q198

The following type of nut is used with alien bolt

Select an option to see the answer and solution.

Q199

According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

Select an option to see the answer and solution.

Q200

According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the rivet hole (d) is obtained by

Select an option to see the answer and solution.

Prev 8 9 10 11 12 Next