Description : Which of the following terms refers to a material which slows neutrons? w) retarder x) moderator y) buffer z) bottleneck
Last Answer : ANSWER: X -- MODERATOR
Description : Ordinary water is not used as a moderator because, it (A) Has a low absorption cross-section (B) Has a low scattering cross-section (C) Absorbs neutrons (D) Does not absorb neutrons
Last Answer : (C) Absorbs neutrons
Description : A single-phase induction motor starts, comes up to about 75% rated speed, slows down to a lower speed, and accelerates again. The problem is most likely in the ____________. A. starting winding B. running winding C. starting capacitor D. running centrifugal switch
Last Answer : Answer: B
Description : Identify the molecules (A) and (B) shown below and select the right option giving their source and use. (a) (A) Cocaine Erythroxylum Accelerates coca the transport of dopamine (b ... - Atropa Produces noid belladonna hallucinations (d) (A) Morphine Papaver Sedative and somniferum pain killer
Last Answer : (d) (A) Morphine Papaver Sedative and somniferum pain killer
Description : A diathermanous substance __________ the thermal radiation completely. (A) Absorbs (B) Reflects (C) Transmits (D) None of these
Last Answer : (C) Transmits
Description : Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The neutrons from the source are of high speed and en
Last Answer : Moderator is a material which is used to slow down the neutrons produced during nuclear fission ... neutrons C. magnetic neutrons D. electric neutrons
Last Answer : Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The ... water B. Graphite C. Beryllium D. Sodium
Last Answer : Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The ... mass number only D. be all the above three
Last Answer : Moderator is a material which is used to slow down the neutrons produced during nuclear fission ... . absorbs thermal energy. Produced in the reactors
Description : In a nuclear reactor the moderator is usually made of graphite placed between the fuel rods used to slow down neutrons all of the above none of the above?
Last Answer : Feel Free to Answer
Description : Neutrons are slowed down in a nuclear reactor by – (1) Fissionable Material (2) Moderator (3) Control rods (4) Cooling system
Last Answer : (2) Moderator Explanation: In thermal nuclear reactors, the coolant acts as a moderator that must slow down the neutrons before they can be efficiently absorbed by the fuel. It allows neutrons to slow down to energies where they can easily cause a nucleus to fission.
Description : A moderator is used in nuclear reactor in order to ? A. Accelerate the neutrons B. Slow down the speed of the neutrons (Answer) C. Increase the number of elections D. Decrease the number of electrons E. None of these
Last Answer : B. Slow down the speed of the neutrons (Answer)
Description : Neutrons are slowed down in a nuclear reactor by (1) Fissionable material (2) Moderator (3) Control rods (4) Cooling system
Last Answer : Moderator
Description : Higher concentration of CO2 in atmosphere (A) Allows visible solar radiation (ultraviolet) of short wave-length to pass through (B) Reflects and absorbs the longer wavelength (infra-red) radiations (C) Prevents solar heat being ... in 'heat trap' i.e., global warming (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : What pigment reflects orange yellow and red and absorbs the other colors to provide energy for photosynthesis?
Last Answer : Carotenoids.
Description : An object which absorbs all colours and reflects none appears:
Last Answer : Black
Description : A pl ant leaf appears to be green because it (a) Absorbs green light (b) Reflects all but yellow and blue light (c) Reflects green light (d) Absorbs red and yellow light
Last Answer : Ans:(c)
Description : An object which absorbs all colours and reflects none appears: (1) White (2) Grey (3) Blue (4) Black
Last Answer : (4) Black Explanation: A surface that absorbs all colours, reflecting none, is said to be black. Black is not a colour; it absorbs all the colours of the visible spectrum and reflects none of them to the eyes. White is a colour.
Description : Why does a black board appears black in color? (1) It reflects black color (2) It absorbs black color (3) It reflects all colors (4) It absorbs all the colours
Last Answer : (4) It absorbs all the colors Explanation: When white light falls on an opaque body, it absorbs all the colors except one color which it reflects; this reflected color is the color of the body.
Description : An object which absorbs all colours and reflects none appears: (1) white (2) grey (3) blue (4) black
Last Answer : black
Description : Exposure to __________ accelerates the degradation of plastics. (A) Ultraviolet radiation (B) High atmospheric temperature (C) High ambient temperature (D) Damp atmosphere
Last Answer : A) Ultraviolet radiation
Description : How many computers and/or iPads could connect to a single Internet home service before it slows down to a crawl?
Last Answer : answer:We have three attached to AT@T and Yahoo. All three online at the same time has had no slow down time. Having four may be another story, altogether. Best bet is have all four online at the same time and monitor the results of any slowdown time.
Description : If sound travels through matter (air) and gas is a medium then what medium slows down the flow of sound the most?
Last Answer : Vacuum.
Description : What takes place when moving water slows down?
Last Answer : It will start to freezes
Last Answer : 1. Delete unnecessary apps. 2. Keep a backup of the apps that you use for many days and delete them , then install them again when needed. 3. Create a custom ROM , do a Google search and you will ... . A: If you support the app on Unroot Android and you need to root the phone to get full support.
Description : Is that true?
Last Answer : Yes, it can. Smoking intoxicates the body - and any poisons can affect its development.
Description : What a period called when there business activity slows down prices and wages falls and unemployment rises?
Last Answer : That is a recession.
Description : Why isostatic rebound slows down over time?
Description : Why does a skateboard moving on a falt surface slows down and comes to a stop?
Last Answer : Need answer
Description : WHAT is the basic force that moves or accelerates soils and regolith down a slope?
Last Answer : Gravity.
Description : When an object that is moving slows down, which action must be occurring?
Last Answer : friction
Description : Refrigeration is a process which – (1) kills bacteria (2) slows down the bacterial growth (3) Inactivates the bacteria (4) Plasmolyses the bacteria
Last Answer : (2) slows down the bacterial growth Explanation: Bacteria thrive in warm, moist conditions. Refrigeration allows the temperature to be lowered so far that food can be stored for days or even months. ... at or below 4°C) slows down bacterial growth which helps reduce the risk of food borne illness.
Description : As load is added to an AC generator provided with constant field excitation, the prime mover slows down with the effect of ____________. A. lowering frequency and lowering generated ... C. increasing frequency and lowering generated voltage D. lowering frequency and increasing generated voltage
Last Answer : Answer: A
Description : What floods a website with so many requests for service that it slows down or crashes? a. Computer virus b. worm c Denial-of-service attack d. None of the above
Last Answer : d. None of the above
Description : Which of the following best illustrates feedback in development? (a) Tissue X secretes RNA which changes the development of tissue Y. (b) As tissue X develops, it secretes enzymes that inhibit the ... . (d) As tissue X develops, it secretes something that slows down the growth of tissue Y.
Last Answer : (c) As tissue X develops, it secretes something that induces tissue Y to develop
Description : A period during which trade expands, then slows down and then expands again is called 1. Business Recession 2. Boom 3. Slump 4. Trade Cycle 5. None of these
Last Answer : Trade Cycle
Description : State whether the following is True or False. i) In bus topology, heavy Network traffic slows down the bus speed. ii) It is multipoint configuration. A) True, True B) B) True, False C) False, True D) False, False
Last Answer : A) True, True
Description : State whether the following is True or False. i) In bus topology, heavy Network traffic slows down the bus speed. ii) It is multipoint configuration. A) True, True B) True, False C) False, True D) False, False
Description : State whether the following is True or False. i) In bus topology, heavy Network traffic slows down the busspeed. ii) It is multipoint configuration. A) True, True B) True, False C) False, True D) False, False
Description : .As a wave travels down a spring, the amplitude slowly decreases. Why does this occur? A. The law of conservation of energy does not apply to waves. B. The energy is spread out along the entire ... due to friction as the particles in the spring rub against each other. E. all of the above
Last Answer : D. Some energy is lost due to friction as the particles in the spring rub against each other.
Description : What floods a Web site with so many requests for service that it slows down or crashes? a. Computer virus b. Worm c. Denial‐of‐service attack d. None of the above
Last Answer : c. Denial‐of‐service attack
Description : Refrigeration is a process which (1) kills bacteria (2) slows down the bacterial growth (3) Inactivates the bacteria (4) Plasmolyses the bacteria
Last Answer : slows down the bacterial growth
Description : In a homogeneous nuclear reactor, the __________ are mixed together. (A) Fuel & coolant (B) Fuel & moderator (C) Coolant & moderator (D) None of these
Last Answer : (B) Fuel & moderator
Description : __________ moderator is used in a fast breeder reactor. (A) Graphite (B) Heavy water (C) Beryllium (D) No
Last Answer : (D) No
Description : A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. (A) Hydrogen (B) Carbon dioxide (C) Ozone (D) None of these
Last Answer : (C) Ozone
Description : The advantages of firing pulverised coal in the furnace lies in the fact that, it (A) Permits the use of high ash content coal (B) Permits the use of low fusion point ash coal (C) Accelerates the burning rate and economises on fuel consumption (D) All (A), (B) and (C)
Last Answer : (C) Accelerates the burning rate and economises on fuel consumption
Description : The advantage of firing pulverised coal in the furnace lies in the fact, that it (A) Permits the use of high ash content coal (B) Permits the use of low fusion point ash coal (C) Accelerates the burning rate and economises on fuel combustion (D) All (A), (B) and (C)
Last Answer : (C) Accelerates the burning rate and economises on fuel combustion
Description : Pick out the correct statement. (A) A catalyst speeds up the forward reaction but slows shown the reverse reaction (B) Addition of catalyst changes the equilibrium constant (C) Pressure changes do not change the equilibrium concentrations (D) The composition of equilibrium is changed by catalyst
Last Answer : (C) Pressure changes do not change the equilibrium concentrations
Description : Is a type of weathering where rock is broken down as it absorbs?
Description : As a proton falls into a black hole, it accelerates. How large will its mass become as it approaches light speed?
Last Answer : answer:To answer the title question: The proton will approach light speed as it crosses the event horizon, since that marks the place where light speed is the escape velocity. It won't quite reach light speed ... the singularity of the black hole. I'm even less sure as to what person A will see.