Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 24 (Q.No. 34)
34.
A bar of square section is subjected to a pull of 10000 kg. If the maximum allowable shear stress on any section is 500 kg/cm2, then the side of the square section will be
Discussion:
11 comments Page 1 of 2.
Dhaval Vaghasiya said:
6 years ago
The correct answer is B.
Because...
Max shear stress= Normal stress/2.
Here,
Normal stress= Load /Area=10000/A
So,
Max shear stress= 10000/2A.
So,
A=10000/2*500,
So,
A=10.
If one side is B,
b*b=10.
That's why B=√10.
Because...
Max shear stress= Normal stress/2.
Here,
Normal stress= Load /Area=10000/A
So,
Max shear stress= 10000/2A.
So,
A=10000/2*500,
So,
A=10.
If one side is B,
b*b=10.
That's why B=√10.
(2)
Preetam salunke said:
5 years ago
Tau max = 3/2 * τ(avg).
Tau avg= normal load /area.
Normal load = mac pull/2.
Hence, τ avg =10000/2 * area.
Hence,
500 = 3/2 *(10000/2*area).
Hence area =15
Side=√15.
So, the Answer is C.
Tau avg= normal load /area.
Normal load = mac pull/2.
Hence, τ avg =10000/2 * area.
Hence,
500 = 3/2 *(10000/2*area).
Hence area =15
Side=√15.
So, the Answer is C.
(11)
Deepak kumar sharma said:
8 years ago
Max. Shear stress= p/2.
Given p/2= 500 =>p = 1000.
p = P/A =>A=P/p.
A = 10000/1000=>10,
A = 10.
Side of square section "a"= √10.
Given p/2= 500 =>p = 1000.
p = P/A =>A=P/p.
A = 10000/1000=>10,
A = 10.
Side of square section "a"= √10.
(1)
Sampat tak said:
1 year ago
The answer should be B.
Because the given force is pull not the transverse loading we can apply 1.5tau.
We will apply (tau) max. = 0.5 (normal stress).
Because the given force is pull not the transverse loading we can apply 1.5tau.
We will apply (tau) max. = 0.5 (normal stress).
Ashish said:
4 years ago
Direct stress = 10000/x2.
Max shear stress= (10000/x2-0)/2.
500=5000/x2,
x2=10,
x= √10.
Max shear stress= (10000/x2-0)/2.
500=5000/x2,
x2=10,
x= √10.
(5)
Pradip said:
7 years ago
@ ROY.
It has not a shear force or transverse force on beam.
It has not a shear force or transverse force on beam.
Vakeem Ahmed said:
7 years ago
Yes, right @Umesh.
The answer should be D.
The answer should be D.
Roy said:
8 years ago
But max shear stress 1.5tav.
Rahul said:
10 years ago
Please give description.
Umesh JIT said:
7 years ago
The Answer should be D.
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