Machine Design Mcqs

Q:

Value of end fixity coefficient for both hands fixed is

A) 1 B) 4
C) 2 D) 0.25
 
Answer & Explanation Answer: B) 4

Explanation: Lower the mobility higher is the end fixity component.

View Answer Discuss

24
Q:

Which of the following are true for End fixity coefficient

A) Dimensionless number B) Used in Euler’s equation
C) Provides condition of restraint at two ends D) All of the listed
 
Answer & Explanation Answer: D) All of the listed

Explanation: It is a dimensionless number used in Euler’s equation to take into account the restraints at the two ends.

View Answer Discuss

27
Q:

Steel columns with a slenderness ratio of 95 are

A) Short Columns B) Long columns
C) Very long columns D) None of the listed
 
Answer & Explanation Answer: A) Short Columns

Explanation: Steel columns with slenderness ratio <100 are classified in short columns.

View Answer Discuss

21
Q:

Cast iron column with a slenderness ratio of 75 are

A) Short Columns B) Long Columns
C) Very short columns D) None of the listed
 
Answer & Explanation Answer: A) Short Columns

Explanation: Cast iron column with a slenderness ratio <80are short columns.

View Answer Discuss

14
Q:

Short column and long column are classified on the basis of

A) Slenderness ratio B) Diameter
C) Length D) None of the listed
 
Answer & Explanation Answer: A) Slenderness ratio

Explanation: Slenderness ratio takes into consideration length and radius of gyration and thus is preferred.

View Answer Discuss

18
Q:

If slenderness ratio=45, which mode of failure will dominate?

A) Buckling B) Compressive Stresses
C) Both buckling and compressive stress D) Can’t be stated
 
Answer & Explanation Answer: A) Buckling

Explanation: If slenderness ratio>30, column shall be more prone to buckling.

View Answer Discuss

19
Q:

Columns with what slenderness ratio are not designed with respect to buckling but are designed for compressive stresses.

A) >1 B) <1
C) >30 D) <30
 
Answer & Explanation Answer: D) <30

Explanation: When slenderness ratio is <30, there is no effect of buckling.

View Answer Discuss

24
Q:

Slenderness ratio is [l= length of column and k= least radius of gyration of cross section about its axis].

A) l/k B) k/l
C) l/2k D) k/2l
 
Answer & Explanation Answer: A) l/k

Explanation: It is a ratio of length to least radius of gyration.

View Answer Discuss

22