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A polymer matrix composite is reinforced with long continuous ceramic fibers aligned in one direction. The young's moduli of the matrix and fibers are Em and Er respectively and the volume fraction of the fibers is f. Assuming iso-stress condition, Young's modulus of the composite Ec in a direction perpendicular to the length of fibers, is given by the expression
One major difference between the action potential of cardiac muscle fibers and the action potential of skeletal muscle fibers is that in cardiac muscle fibers
Which of the following fibres are stretch fibres?
1. Neoprene
2. Spandex
3. Sisal
4. Lyo cell
In a magnalium alloy, the ratio of magnesium and aluminium in a 72 kg alloy is 5 ∶ 4. Some amount of magnesium is extracted from the alloy and the ratio becomes 7 ∶ 8, how much magnesium is extracted?
With reference to two non-conventional energy sources called 'coalbed methane' and 'shale gas' consider the following statements: 1. Coalbed methane is the pure methane gas extracted from coal seams, while shale gas is a mixture of propane and butane only that can be extracted from fine-grained sedimentary rocks. 2. In India, abundant coalbed methane sources exist, but so far no shale gas sources have been found. Which of the statements given above is/are correct?
The process in which the leaves are crushed and beaten by a rotating wheel set with blunt knives, so that only fibers are extracted is called as __________
The following items consist of two statements, one labeled as “Assertion (A)” and the other labeled as the “Reason (R)”. You are to examine the two statements carefully and decide if the Assertion (A) and the Reason (R) are individually true and if so whether the reason is a correct explanation of the assertion. Select your answer to these items using the codes given below and mark your answer accordingly. Assertion (A): Polarization preserving fibers have a special core design that maintains the state of polarization. Reason (R): In polarization preserving fibers, there is a stress applying part, which creates slow and fast axes in the core.
In which of these structures is collagen fibers present in rows between parallel bundles of fibers?
Plastic fibers are less widely used than glass fibers.
Conventional optical fibers has more transmission losses than photonic crystal fibers.