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Frequently Asked rrb Category Questions with Answers

(#M40071891) RRB QUESTION Phisics Keep an EYE

Vacuum is considered as
a.Non magnetic material
b.Diamagnetic material
c.Paramagnetic material
d.Ferromagnetic material

Asked In RRB Jaspalsingh Parmar (10 years ago)

Unsolved Read Solution (3)

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(#M40074657) RRB QUESTION Keep an EYE

63% of 3 4/7 is

a.2.25
b.2.4
c.2.5
d.2.75

Asked In RRB Jaspalsingh Parmar (10 years ago)

Solved MOHAMMAD AADIL Read Solution (1)

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(#M40107542) RRB QUESTION Keep an EYE

X and Y are independent random variables with variance 2 and 3. Find the variance of 3X+4Y 

Asked In RRB Jaspalsingh Parmar (10 years ago)

Unsolved Read Solution (2)

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(#M40107596) RRB QUESTION Keep an EYE

If a^2 - b^2 = 8 and a*b = 2, find a^4 + b^4

Asked In RRB Jaspalsingh Parmar (10 years ago)

Unsolved Read Solution (1)

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(#M40107545) RRB QUESTION Keep an EYE

If X is uniformly distributed with Mean 1 and Variance 4/3
, find P [X> 0]  

Asked In RRB Jaspalsingh Parmar (10 years ago)

Unsolved

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(#M40074635) RRB QUESTION Keep an EYE

sum of squares of three consecutive odd numbers is 2531.Find these 3 odd numbers?

Asked In RRB Jaspalsingh Parmar (10 years ago)

Unsolved Read Solution (2)

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(#M40074659) RRB QUESTION Keep an EYE

In sand moulding the top flask is known as

a.cope
b.drag
c.fillet
d.check

Asked In RRB Jaspalsingh Parmar (10 years ago)

Solved MD AZAD ANSARI Read Solution (3)

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(#M40074681) RRB QUESTION Keep an EYE

((489+375)^2-(489-375)^2)/ (489*375)=

a.144
b.864
c.2
d.4

Asked In RRB Jaspalsingh Parmar (10 years ago)

Solved susanta Read Solution (2)

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(#M40074697) RRB QUESTION Keep an EYE

Which one of the following is not a prime no.

a.71
b.91
c.61
d.31

Asked In RRB Jaspalsingh Parmar (10 years ago)

Solved lovely verma Read Solution (6)

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(#M40071889) RRB QUESTION Production engineering Keep an EYE

In a fillet welded joint the weakest area of weld is
a. Toe
b. Root
c. Throat
d. Face

Asked In RRB Jaspalsingh Parmar (10 years ago)

Unsolved Read Solution (1)

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