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According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through centre of gravity (i.e. I_P) is given by(where, A = Area of the section, I_G = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.

A shaft of diameter D is subjected to a twisting moment (T) and a bending moment (M). If the maximum bending stress is equal to maximum shear stress developed, then M is equal to

A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The maximum shear stress will be

A flow through a long pipe at constant rate is called

The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

The heating of a gas at constant pressure is governed by

Number of working strokes per min. for a four stroke cycle engine are __________ the speed of the engine in r.p.m.

In a jet engine, the compression varies as the square of the speed.

A turbo-prop is preferred to turbo-jet because

The expansion valve in a refrigerator controls the flow of refrigerant.

The dry bulb temperature during sensible heating of air

The material of pipe lines for a system using freon as a refrigerant should be

Which of the following material has the maximum ductility?

The centre to centre distance between two consecutive rivets in a row, is called

Hard and tough materials like cast iron should be turned at

In break even analysis, total cost consists of

P.M.T.S. (Predetermined Motion Time Systems) include

A laminated glass upon cracking

A machine mounted on a single coil spring has a period of free vibration of t_p . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become