Description : Electro-magnetic spectrum range, which is important for radiation varies from __________ microns. (A) 1 to 100 (B) 0.5 to 50 (C) 10 to 100 (D) 100 to 1000
Last Answer : (B) 0.5 to 50
Description : What is the name of the electromagnetic radiation in the range of 0.4 to 0.7 microns?
Last Answer : ANSWER: VISIBLE LIGHT
Description : Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid. (A) 2 to 3 (B) 0.01 to 0.10 (C) 200 to 300 (D) 100 to 1000
Last Answer : A) 2 to 3
Description : Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is __________ microns. (A) < 5 (B) 10 to 25 (C) < 74 (D) > 1000
Last Answer : (C) < 74
Description : For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns). (A) 1-5 (B) 10-60 (C) 200-300
Last Answer : (B) 10-60
Description : Steam side heat transfer co-efficient in an evaporator is in the range of __________ kcal/hr.m2°C. (A) 10-50 (B) 100-500 (C) 1000-1500 (D) 5000-15000
Last Answer : (D) 5000-15000
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 : or Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns. (A) 5 (B) 50 (C) 500 (D) 5000
Last Answer : (C) 500
Description : Thermal radiation is an electromagnetic radiation with wavelengths in _____ range. A. 1 to 100 µm B. 0.1 to 100 µm C. 0.1 to 10 µm D. 10 to 100 µm
Last Answer : 0.1 to 100 µm
Description : Overall heat transfer co-efficient for cooling of hydrocarbons by water is about (A) 50 -100 Kcal/hr.m2 .°C (B) 50 -100 W/m2 .°K (C) 50 -100 BTU/hr. ft. 2°F (D) 1000 - 1500 BTU/hr. ft. 2°F
Last Answer : (C) 50 -100 BTU/hr. ft. 2°F
Description : Where is the microwaves radiation located on the electromagnetic spectrum in relation to other kinds of radiation?
Last Answer : Microwaves are in the UHF portion of the spectrum. Typicalfrequencies are above 100 GHz.
Description : Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called?
Last Answer : IR Infra red rays We all almost use An IR remote controller to use operate a TV OR DTH OR any other electronics Gadgets in out home but ever you think how this process works means when you ... then a signal corresponding to pressed key will transmit and carrying a command which hit to the IR Receiv
Description : The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from: (A) 10-10 to 106 m (B) 10-8 to 106 m (C) 10-10 to 1010 m (D) 10-8 to 108 m
Last Answer : Answer: Option A
Description : Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve. (A) 100 (B) 50 (C) 78 (D) None of these
Last Answer : (A) 100
Description : Work index is defined as the (A) Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen (B) Energy needed to crush ... of the product passes a 200 mesh screen (D) Energy needed to crush one ton of feed to 100 microns
Last Answer : (A) Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen
Description : Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation. (A) Clarification (B) Sedimentation (C) Flocculation (D) Classification
Last Answer : (D) Classification
Description : Calculate the rate of heat transfer by radiation from an unlagged steam pipe, 50 mm o.d. at 393K to air at 293K emissivity e = 0.9.
Last Answer : Rate of heat transfer by radiation Assume length of pipe = 1 m
Description : 200 mesh sieve size corresponds to __________ microns. (A) 24 (B) 74 (C) 154 (D) 200
Last Answer : (B) 74
Description : Which one of the following statement is correct? (A) Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation (B) The rate of transfer of radiant energy is called flux ... ) The radiant energy which falls upon a surface is termed as irradiance (D) All of these
Last Answer : Answer: Option D
Description : In radiometric terms, it measures the rate at which electromagnetic waves transfer light energy ∙ A. Optical radiation ∙ B. Optical impedance ∙ C. Optical illusion ∙ D. Optical power
Last Answer : D. Optical power
Description : ____ is the transfer of energy in the form of electromagnetic waves. a. Compulsion c. Convection b. Radiation d. Conduction
Last Answer : b. Radiation
Description : Single-mode step-index cable has a core diameter in the range of ∙ A. 100 to 1000 micrometer ∙ B. 50 to 100 micrometer ∙ C. 2 to 15 micrometer ∙ D. 5 to 20 micrometer
Last Answer : . 2 to 15 micrometer
Description : Heat transfer by __________ may not necessarily require the presence of a medium. (A) Conduction (B) Natural convection (C) Forced convection (D) Radiation
Last Answer : (D) Radiation
Description : Heat transfer by __________ is almost absent in case of fluidised bed drying operation. (A) Radiation (B) Conduction (C) Convection (D) Both (B) & (C)
Last Answer : A) Radiation
Description : Vibrating screens have capacity in the range of __________ tons/ft 2 .mm mesh size. (A) 0.2 to 0.8 (B) 5 to 25 (C) 50 to 100 (D) 100 to 250
Last Answer : (A) 0.2 to 0.8
Description : In which mode of heat transfer, the Biot number is important? (A) Transient heat conduction (B) Natural convection (C) Forced convection (D) Radiation
Last Answer : (A) Transient heat conduction
Description : Thermal diffusivity is the most important in heat transfer by (A) Conduction (B) Radiation
Last Answer : (A) Conduction
Description : View factor is important in heat transfer by (A) Steady state conduction (B) Natural convection (C) Forced convection (D) Radiation
Description : What is the range of minimum set of genes required for life? A.50-100 genes B.250-350 genes C.1000-1500 genes D.1500-2000 genes
Last Answer : 250-350 genes
Last Answer : .250-350 genes
Description : What is the range of minimum set of genes required for life? A- 50-100 genes B- 250-350 genes C- 1000-1500 genes D- 1500-2000 genes
Description : What is the region of the frequency spectrum from 1000 MHz to 100,000 MHz called?
Last Answer : Microwave region.
Description : Very low pressure is expressed in microns (μ), which is equal to__________ mm of Hg column (absolute) at 0°C. (A) 0.0001 (B) 0.001 (C) 0.01 (D) 0.1
Last Answer : (B) 0.001
Description : A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20microns settling in the same oil will have a settling velocity (A) ... ) One fourth as that of A (C) Twice as that of A (D) Four times as that of A
Last Answer : (B) One fourth as that of A
Description : What is the spectrum of stereophonic FM signal? A. 19 to 38 kHz B. 30 to 53 kHz C. 59.5 to 74.5 kHz D. 88 to 108 MHz
Last Answer : B. 30 to 53 kHz
Description : The frequency spectrum of the stereophonic FM signal. A. 67 kHz B. 59.5 to 74.5 kHz C. 19 to 38 kHz D. 30 to 53 kHz
Last Answer : D. 30 to 53 kHz
Description : There are three different categories of jobs A, B and C. The average salary of the students who got the job of A and B categories is Rs.32 lakh per annum. The average salary of the student who got the job of B ... 30 & 44 B) lies between 48 & 56 C) lies between 38 & 45 D) lies between 49 & 50
Last Answer : Answer: C) Let the number of students who got the jobs of A, B and C categories is a, b and c respectively, ∴Total salary of Aand B = 32 (a +b) ∴Total salary of B and C = 54 (b+ ... the minimum salary must be Rs.38 lakh and the maximum salary cannot exceed 45, which is the highest of the three..
Description : Tar is a better fuel than furnace oil, because of its (A) Higher calorific value (B) Lower sulphur content (C) Higher emissivity (0.8-0.9) resulting in higher radiation heat transfer rate (D) Both (A) and (B)
Last Answer : (D) Both (A) and (B)
Description : In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole. (A) 100 (B) 1000 (C) 10000 (D) 100000
Last Answer : (B) 1000
Description : Pick out the wrong statement. (A) Hammer crushers operate by impact action (B) Standard screens have circular opening (C) With increase in mesh number of screens, their diameter in microns decreases (D) 200 mesh screen has 200 openings per linear cm
Last Answer : (D) 200 mesh screen has 200 openings per linear cm
Description : What is the electromagnetic spectrum?
Last Answer : The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays, and is an important concept in physics and astronomy.
Last Answer : The electromagnetic spectrum is the range of all types of electromagnetic radiation, including radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays, and is an important concept in physics and astronomy.
Description : Have they detected electromagnetic energy beyond the gamma spectrum?
Last Answer : The answer rests on technical definitions, but I believe both radio and gamma are defined as EM beyond a certain frequency, with no limits on the extreme ends. So there's no such thing. The spectra of ... lowest used/defined radio band. I think the lowest ELF band is defined as something like 3 Hz.
Description : What is the comparison between the size of the visible light spectrum and the size of the electromagnetic spectrum?
Last Answer : Need answer
Description : How are the visible spectrum and the electromagnetic spectrum similar to and different from one another?
Last Answer : The visible light spectrum is a narrow band of theelectromagnetic spectrum, between the infrared spectrum and theultraviolet spectrum.The complete electromagnetic spectrum covers frequenciesapproaching 0 Hz to ... spectrum, x-ray radiation, andgamma ray radiation, in increasing order by frequency.
Description : What part do the electromagnetic spectrum do plants use?
Last Answer : When they want to communicate with each other (in a languagewhich has been deciphered to be very similar to Thai) plants useGamma radiation.
Description : What is the electromagnetic spectrum (EM)?
Last Answer : The electromagnetic (EM) spectrum is the entire range of frequencies that electromagnetic radiation can have. The EM spectrum is divided into sections based on the common characteristics that certain frequency ranges have. These ... wave is no longer an X-ray, but is instead a gamma ray. it is wav
Description : Actinic means related to chemically active rays of the electromagnetic spectrum. A. True B. False
Last Answer : Ans: A
Description : In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie? (1) Visible (2) Infrared (3) Ultraviolet (4) X-ray
Last Answer : (3) Ultraviolet