42) The ratio of fibre length to its diameter in a composite material is called

Answer is:

Aspect Ratio

KPSC Water Resource Department Junior Engineer Mechanical Question Paper 2017 with Answer Key

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Related KPSC Water Resource Department Junior Engineer Mechanical Question Paper 2017 with Answer Key

43) If the mechanical properties of a composite improves as a result of increasing the average fibre length, then it is called

Answer is:

Short fibre

44) According to Gibb's phase rule, the number of component phases and number of degrees of freedom in a system at equilibrium is given by where, P = number of phases, F = number of degrees of freedom, C = number of components in a system in equilibrium.

Answer is:

P + F = C + 2

45) An intensive property of a thermodynamic system is

Answer is:

Temperature

Explanation:

Extensive properties The properties of the system, whose value for the entire system is equal to the sum of their values for the individual parts of the system, are called extensive properties.
For example, total volume, total mass and total energy of a system are extensive properties.

Intensive properties The properties of the system, whose value for the entire system is not equal to the sum of their values for the individual parts of the system, are called intensive properties.
For example, temperature, pressure and density of a system are intensive properties.

46) For which of the following situations will the zeroth law of thermodynamics not be valid ?

50 cc of water at 25 Degree Centigrade is mixed with 50 cc of water at 25 Degree Centigrade

500 cc of milk at 15 25 Degree Centigrade is mixed with 100 cc of water at 15 25 Degree Centigrade

5 kg of wet steam at 100 Degree Centigrade is mixed with 50 kg of dry and saturated steamat 100 Degree Centigrade

10 cc of water at 20 Degree Centigrade is mixed with 10 cc of sulphuric acid at 20 Degree Centigrade

Answer is:

10 cc of water at 20 Degree Centigrade is mixed with 10 cc of sulphuric acid at 20 Degree Centigrade

KPSC Water Resource Department Junior Engineer Mechanical Question Paper 2017 with Answer Key

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