Related Questions

The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
A $$\frac{{{\text{P}}l{\text{A}}}}{{\text{E}}}$$
B $$\frac{{{\text{P}}l}}{{{\text{AE}}}}$$
C $$\frac{{\text{E}}}{{{\text{P}}l{\text{A}}}}$$
D $$\frac{{{\text{AE}}}}{{{\text{P}}l}}$$
The proportions of lime and sand in the mortar normally used in brick construction are
A 1 : 2
B 1 : 4
C 1 : 6
D 1 : 8
The compressive strength of cast iron is __________ that of its tensile strength.
A Equal to
B Less than
C More than
D None of these
The tensile strength of ductile materials is _________ its compressive strength.
A Equal to
B Less than
C Greater than
D None of these
ভঙ্গুর পদার্থের compressive strength, tensile strength হতে -
A বেশি
B কম
C সমান
D দ্বিগুণ
For testing compressive strength of cement, the size of cube used is
A 50 mm
B 70.6 mm
C 100 mm
D 150 mm
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. Which of the following, if given to the mixing vat operator as an instruction, would not determine the setting of any other valve ?
A S must be open
B T must be open
C U must be open
A,B,C,D,E,G and I are seven friends who study in three different standards namely 5th, 6th and 7th such that not less than two friends study in the same standard. Each friend also has a different favorite subject namely History, Civics, English, Bangla, Science , Maths , and Economics but not necessarily in the same order. A likes Maths and studies in the 5th standard with only one other friend who likes Bangla. I studies with tow other friends . Both the friends who study with I like languages (Here languages include only Science , English and Bangla ) . D studies in the 6th standard with only one person and does not like Civics . E studies with only one friend . The one who likes history does not study in 5th or 6th standard . E does not like languages. C does not like English , Science or Civics. Which combination represents E's favorite subject and the standard in which he studies?
A Civics and 7th
B Economics and 5th
C Civics and 6th
D History and 7th
For plastering the exposed brick walls, the cement sand mortar should be
A 1 : 2
B 1 : 3
C 1 : 4
D 1 : 6
Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?
A Load & elongation
B Engineering stress & strain
C True stress & strain
D Poisson's ratio & Young's modulus

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