KPCL AE Mechanical Question Paper - 2018 with Answer Key

64) De-Laval turbines are mostly used

Answer is:

For small purposes and high speeds

65) The accuracy of micrometers, callipers, dial indicators can be checked by a

Answer is:

Slip gauge

The accuracy of micrometers, callipers, dial indicators can be checked by a

66) Which one of the following can completely balance several masses revolving in different planes on a shaft?

Answer is:

Two masses in any two planes

67) The behaviour of gases can be fully determined by

Answer is:

3 laws

68) Thermal diffusivity is

Answer is:

A physical property of the material

Explanation:

Thermal diffusivity is defined as the ratio of the thermal conductivity to the heat capacity of a material and it measures the ability of a material to conduct thermal energy relative to its ability to store thermal energy. Thermal diffusivity is a physical property of the material.