Description : Which colour of heat radiation represents the highest temperature?
Last Answer : White
Description : The heat dissipated by from a surface depends upon its temperature and its characteristics like colour, roughness etc. (a) conduction (b) convection (c) radiation (d) any ofthe above
Last Answer : (c) radiation
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 : Photosynthetically active radiation (PAR) represents the following range of wavelength
Last Answer : Photosynthetically active radiation (PAR) represents the following range of wavelength A. 400-700 nm B. 450-920 nm C. 340-450 nm D. 500-600 nm
Last Answer : Photosynthetically active radiation (PAR) represents the following range of wavelength A. 400-700 nm B. 500-600 nm C. 450-950 nm D. 340-450 nm
Description : $ `X X^(C)` represents the genotype of a human femanle which acts as carrier of genes for colour blindness. ! Any change in the structure of a chromos
Last Answer : $ `X X^(C)` represents the genotype of a human femanle which acts as carrier of genes for colour blindness ... is wrong D. If both As and R are wrong.
Description : The colour band on the extreme left in general purpose fixed resistors represents: A) Tolerance B) First significant digit C) Wattage Rating D) Voltage Rating
Last Answer : The colour band on the extreme left in general purpose fixed resistors represents: First significant digit
Description : The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents? A. B. C ds DNA 3 5 5 3 ... - extension in the presence of heat stable DNA polymerase (d) A - annealing with two sets of primers
Last Answer : (c) C - extension in the presence of heat stable DNA polymerase
Description : Which of the following represents the perpetual motion of the first kind (a) engine with 100% thermal efficiency (b) a fully reversible engine (c) transfer of heat energy from low ... its own energy (e) production of energy by temperature differential in sea water at different levels.
Last Answer : Answer : d
Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in – (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection
Last Answer : (2) Convection Explanation: The process of heat transfer from one place to an-other place without the movement of particles is called conduction Example: Heat transfer through Metal rods. On the ... heated particles of the substance. The fluids (liquids and gases) are heated by this process.
Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in - (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection
Last Answer : (2) Convection Explanation: The process of heat transfer from one place to another place without the movement of particles is called conduction,
Description : An ideal coolant for a nuclear reactor should (A) Be a good absorber of neutrons (B) Be capable of attaining high temperature, only when it is pressurised (C) Have high density, but low heat transfer co-efficient (D) Be free from radiation damage and non-corrosive
Last Answer : (D) Be free from radiation damage and non-corrosive
Description : Radiation heat transfer rates does not depend upon the (A) Type of absorbing surface (B) Distance between the heat source and the object receiving the heat (C) Surface area and temperature of the heat source (D) None of these
Last Answer : (D) None of these
Description : Heat transfer by radiation between two bodies at T1 & T2 and in an ambient temperature of Ta °C depends on (A) T1 - T2 (B) T1 - Ta (C) T2 - Ta (D) None of these
Description : The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m2 . The flux, when the element temperature is increased to 1000°C for the same furnace temperature is (A) 11.2 kW/m2 (B) 12.0 kW/m2 (C) 14.6 kW/m2 (D) 16.5 kW/m
Last Answer : (D) 16.5 kW/m2
Description : Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) (A) t 4 (B) T 4 (C) 1/t 4 (D) 1/T 4
Last Answer : (B) T
Description : Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because (A) Convection becomes important (B) Conduction becomes important (C) Radiation becomes important (D) Sub-cooled boiling occurs
Last Answer : (C) Radiation becomes important
Description : Pick out the correct statement. (A) Higher is the temperature of the radiating body, higher is the wavelength of radiation (B) Logarithmic mean area is used for calculating the heat flow rate ... ) Solid angle subtended by the finite surface at the radiating element is called the angle of incidence
Last Answer : (B) Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder
Description : In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted
Last Answer : (C) Radiation
Description : Maximum heat transfer in high temperature furnaces is by (A) Conduction (B) Convection (C) Radiation (D) Either (A), (B) or (C); depends on the type of furnace
Description : In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be (A) Conduction (B) Radiation (C) Natural convection (D) Forced convection
Last Answer : (B) Radiation
Description : A thin, flat & square plate measuring 2 m 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will ... heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200
Last Answer : (B) 100
Description : reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by ... Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these
Last Answer : Option C
Description : Utilizing the answer to the previous problem, estimate the overall or average increase in temperature ( ΔT) of the concrete roof from the energy absorbed from the sun during a12hour day. Assume that all of the radiation absorbed goes into ... °C b. 8.9°C c. 9.9°C d. 10.9°C formula: ΔQ = m c ΔT
Last Answer : 7.9 °C
Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection
Last Answer : Convection
Description : Which represents a process of chemical weathering? -Do You Know?
Last Answer : answer:
Description : What represents the most complex level? -Do You Know?
Description : Telangana region represents type of vegetation? -Do You Know?
Description : The fossil of Archaeopteryx represents the evidence of origin of animals? -Do You Know?
Last Answer : Archaeopteryx was long considered to be the beginning of the evolutionary tree of birds
Description : What is Electromagnetic radiation with maximum wavelength? -Do You Know?
Description : In which process, a nucleus spontaneously breaks down by emitting radiation? -Do You Know?
Description : Which is the correct device for the detection of thermal radiation? -Do You Know?
Description : What is the The chemical part of the dye that absorbs light and produces colour called? -Do You Know?
Description : In which part of the eye lies the pigment, that decides the colour of the eyes of a person? -Do You Know?
Description : Which gase changes lime water in milky colour? -Do You Know?
Description : If there is no Sun, what would the colour of the sky? -Do You Know?
Description : What structures represents the highest level of organization in an animal?
Last Answer : Feel Free to Answer
Description : On a project the project manager should strive for a "Quality Level" that : 1. is the highest level possible 2. is as close to the project objectives as possible 3. represents the least cost to the project. 4. Exceeds the specified requirements of the project.
Last Answer : 2. is as close to the project objectives as possible
Description : According to Maslow, which of the following categories of needs represents the most basic? a) Physiologic needs Physiologic needs must be met before an individual is able to move ... physiologic survival. d) Belongingness Belongingness and affection needs are not essential to physiologic survival.
Last Answer : a) Physiologic needs Physiologic needs must be met before an individual is able to move toward psychological health and well-being.
Description : Which type of hacker represents the highest risk to your network? A. Disgruntled employees B. Black-hat hackers C. Grey-hat hackers D. Script kiddies
Last Answer : A. Disgruntled employees
Last Answer : D. Script kiddies
Description : Which type of hacker represents the highest risk to your network? ∙ A. Disgruntled employees ∙ B. Black-hat hackers ∙ C. Grey-hat hackers ∙ D. Script kiddies
Last Answer : In a load curve the highest point represents peak demand.
Description : Which radiation emitted from the sun has highest wavelength?
Last Answer : Micro waves
Description : How to maximize the skip distance? A. Using the smallest possible radiation angle and highest possible frequency B. Using the smallest possible radiation angle and lowest possible frequency ... highest possible frequency D. Using the biggest possible radiation angle and lowest possible frequency
Last Answer : A. Using the smallest possible radiation angle and highest possible frequency
Description : Skip distance can be maximized by using the ____ radiation angle possible and the ____ frequency that will be refracted at that angle. A. lowest, lowest B. lowest, highest C. highest, lowest D. highest, highest
Last Answer : B. lowest, highest
Description : Which of the following has the highest energy? A. gamma rays (Answer) B. X-rays C. Ultra-violet radiation D. radio waves
Last Answer : A. gamma rays (Answer)
Description : Which radiation emitted from the sun has highest wavelength
Last Answer : Microwaves