Description : Super conduction in metals is observed at a temperature of __________ °K. (A) 100 (C) About 273 (D) About 373
Last Answer : (B) >100
Description : Which is NOT a characteristic of emissivity? A. It is high with most nonmetals B. It is directly proportional to temperature C. It is independent with the surface condition of the material D. It is low with highly polished metals
Last Answer : It is independent with the surface condition of the material
Description : What is the critical temperature of a refrigerant ?
Last Answer : Critical temperature is the maximum temperature of a refrigerator which it can be condensed into liquid and beyond this it remains gas irrespective of pressure applied.
Description : What is the temperature when water and vapor are in equilibrium with the atmospheric pressure? a. Ice point b. Steam point c. Critical point d. Freezing point
Last Answer : Steam point
Description : What is the temperature when water and vapor are in the equilibrium with the atmospheric pressure? a. Ice point b. Steam point c. Critical point d. Freezing point
Description : __________________ represents the highest pressure and highest temperature at which liquid and vapor can coexist in equilibrium. a) Critical Point b) Boiling Point c) Quality Point d) None of the above
Last Answer : Critical Point
Description : _________ is the temperature to which the air must be cooled, at constant pressure, to produce saturation. a. relative humidity b. triple point temperature c. dew point d. critical point
Last Answer : dew point
Description : Which of the following is used as base material in Stereolithography (SLA) process? a.Thermoplastics , Metals powders b.Thermoplastics , Eutectic metals. c.Titanium alloys d.Photopolymer
Last Answer : d.Photopolymer
Description : Metals, in general are of low strength and do not possess required physio-chemical and technological properties for a definite purpose. Alloys are therefore more than metals alone. Discuss the arrangement of atoms and Structures of alloys.
Last Answer : Alloys are produced by melting or sintering two ore more metals, or metals and a non-metal, together. Alloys possess typical properties inherent in the metallic state. The chemical elements ... an alloy are its individual portions, each having a single structure with its characteristic features.
Description : What does thermal diffusivity of metals signify.
Last Answer : Thermal diffusivity is associated with the speed of propagation of heat into solids during changes in temperature with time.
Description : Non-volatile heavy metals in kiln are fixed into ____ a) Clinker’s crystalline structure b) Fumes c) Solid lump d) Slag
Last Answer : Clinker’s crystalline structure
Description : Which of the following have the highest thermal conductivities? a. liquids b. gases c. metals d. solids other than metals
Last Answer : metals
Description : What do you understand by critical points in iron, iron-carbide diagram ?
Last Answer : The temperatures at which the phase changes occur are called critical points (or tem¬peratures).
Description : A critical feature of _______ is to understand what drives energy consumption. a) M&Y b) M&T c) T&M. d) C&V
Last Answer : m & t
Description : A critical feature of M&T is to understand____ a) energy management. b) what drives energy consumption c) product configuration d) none of the above
Last Answer : what drives energy consumption
Description : In the case of developing country which sector assumes a critical importance in view of the ever increasing needs A. Energy sector C. Energy audit sector B. Energy management sector D. Energy saving sector
Last Answer : Energy sector
Description : What refers to the state at which liquid and gaseous phases are indistinguishable? a. Triple point b. Critical point c. Boiling point d. Pour point
Last Answer : Critical point
Description : What is the unique state at which solid, liquid and gaseous phase can go co-exist in equilibrium? a. Triple point b. Critical point c. Boiling point d. Pour point
Last Answer : Triple point
Description : The compressibility factor, x, is used for predicting the behavior of nonideal gases. How is the compressibility ty factor defined relative to an ideal gas? (subscript c refers to critical value) A. ... compressibility factor, x, is an dimensionless constant given by pV=zRT. Therefore z = pV / RT
Last Answer : z = pV/ RT
Description : What refers to the point at which the saturated liquid and saturated vapor states are the same or identical? A. Triple point B. Inflection point C. Maximum point D. Critical point
Last Answer : Maximum point