**911. Along the principal plarr subjected to maximum principal stress**

A. maximum shear stress acts

B. minimum shear stress acts**C. no shear stress acts**

D. none of these.

**912. The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is**

A.4

B.3**C.2**

D.1

**913. If two tensile forces mutually perpendicular act on a rectangular parallelopiped bar are equal, the resulting elongation of the pipe, is****A. linear**

B. parabolic

C. cubical

D. circular

**914. A bending moment may be defined as :**

A. Arithmetic sum of the moments of all the forces on either side of the section

B. Arithmetic sum of the forces on either side of the section**C. Algebraic sum of the moments of all the forces on either side of the section**

D. None of these.

**915. At either end of a plane frame, maximum number of possible transverse shear forces, are****A. one**

B. two

C. three

D.four

**916. At either end of a plane frame, maximum number of possible bending moments, are**

A. one

B. two

C. three**D. zero.**

**917. A simply supported beam carries two equal concentrated loads W at distances L/3 from either support. The maximum is****A. linear**

B. parabolic

C. cubical

D. circular.

**918. The unit of the viscosity is**

A. kg sec/m2**B. Newton sec per m2**

C. Newton-sec2/m3

D. m2 per sec.

**919. Unit of kinematic viscosity is****A. m2/sec**

B. Newton sec/m2

C. Newton sec/m3

D. Kg sec/m2.

**920. Barometres are used to measure**

A. pressure in water channels, pipes etc.

B. difference in pressure at two points**C. atmospheric pressure**

D. very low pressure

**NOTEIF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.THANK YOU**