Upsc Civil Service Exam Questions

Question: In the cross-section of a rectangular beam, what is the ratio of the average shear stress to the maximum shear stress ?
[A].

3/2

[B].

2/3

[C].

4/3

[D].

3/4

Answer: Option B

Explanation:

No answer description available for this question.

Question: In the cantilever beam shown in the figure, what is the percentage of bending moment at l/2 with respect to the maximum bending moment at the fixed support ?
[A].

15%

[B].

20%

[C].

25%

[D].

30%

Answer: Option C

Explanation:

No answer description available for this question.

Question: A cantilever beam of span l carries a uniformly varying load of zero intensity at the free end and w per metre length at the fixed end. What does the integration of the ordinate of the load diagram between the limits of free and fixed ends of the beam give ?
[A].

Bending moment at the fixed end

[B].

Shear force at the fixed end

[C].

Bending moment at the free end

[D].

Shear force at the free end

Answer: Option A

Explanation:

No answer description available for this question.

Question: A shot of mass m penetrates a thickness t of a fixed plate of mass M. If the plate were free to move and the resistance supposed to be uniform, which one of the following is the thickness penetrated ?
[A].

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.

Question: A stone dropped from the top of a tower is found to travel (5/9) of the height of the tower during the last second of its fall. What is the total time of fall ?
[A].

2 s

[B].

3 s

[C].

6 s

[D].

4 s

Answer: Option B

Explanation:

No answer description available for this question.

Question: If the magnitude of the resultant of two forces F and 2F acting at a point O is 50 N, and the included angle between F and 2F is 90°, then what is the magnitude of F ?
[A].

F = 10 N

[B].

F = 502 N

[C].

F = 252 N

[D].

F = 105 N

Answer: Option D

Explanation:

No answer description available for this question.

Question: A car negotiates a curve on a slippery road at a constant speed of 10 m/s. If the coefficient of friction is 0.5, what is the minimum radius of the arc in which the car can turn ?
[A].

20 m

[B].

10 m

[C].

5 m

[D].

4 m

Answer: Option A

Explanation:

No answer description available for this question.

Question: If R is the radius of the circular railway curve in metres and D is the degree of the curve, then which one of the following is the expression for D ?
[A].

D = 360/R

[B].

D = 1080/R

[C].

D = 1720/R

[D].

D = 720/R

Answer: Option C

Explanation:

No answer description available for this question.

Question: The amount of gradient is required to be reduced, whenever a horizontal curve and gradient have to be provided together. What is this process known as ?
[A].

Momentum gradient

[B].

Pusher gradient

[C].

Grade compensation

[D].

Grade resistance

Answer: Option C

Explanation:

No answer description available for this question.

Question: Mercury (density = 13600 kg/m3, σ = 0.49N/mm internal diameter open-ended capillary tube is inserted in the middle of the beaker into the mercury. The meniscus in the tube will be below the external mercury surface by how much distance?
[A].

4.2 mm

[B].

5.7 mm

[C].

6.8 mm

[D].

7.3 mm

Answer: Option D

Explanation:

No answer description available for this question.