In the nuclear reactors, moderators are used to : (1) Accelerate neutrons (2) Absorb the neutrons (3) Slow down the neutrons (4) Generate neutrons

In the nuclear reactors, moderators are used to : (1) Accelerate neutrons (2) Absorb the neutrons (3) Slow down the neutrons (4) Generate neutrons
by

1 Answer

Answer :

Slow down the neutrons
by

Related questions

The function of moderators in nuclear reactor is to (A) Slow down the secondary neutrons (B) Absorb the secondary neutrons (C) Control the chain reaction (D) None of these

Description : The function of moderators in nuclear reactor is to (A) Slow down the secondary neutrons (B) Absorb the secondary neutrons (C) Control the chain reaction (D) None of these

Last Answer : (A) Slow down the secondary neutrons

Thermal shield is used in high powered nuclear reactors to (A) Protect the walls of the reactor from radiation damageB) Absorb the fast neutrons(C) Slow down the secondary neutrons(D) Protect the fuel element from coming in contact with the coolant

Description : Thermal shield is used in high powered nuclear reactors to (A) Protect the walls of the reactor from radiation damage B) Absorb the fast neutrons (C) Slow down the secondary neutrons (D) Protect the fuel element from coming in contact with the coolant

Last Answer : (A) Protect the walls of the reactor from radiation damage

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

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)

Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these

Description : Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these

Last Answer : (B) A compound of oxygen and deuterium

Which is are used nuclear reactors to absorb neutrons?

Description : Which is are used nuclear reactors to absorb neutrons?

Last Answer : control rods

Moderators are not necessary in the IV generation nuclear wave reactors.

Description : Moderators are not necessary in the IV generation nuclear wave reactors.

Last Answer : Slowing down of neutrons is not needed.

Moderators are used in the nuclear reactors to?

Description : Moderators are used in the nuclear reactors to?

Last Answer : Slow down the neutrons.

Graphite is used in nuclear reactors for- (1) reducing the speed of fast neutrons (2) cooling the reactor (3) absorbing neutrons (4) None of the above

Description : Graphite is used in nuclear reactors for- (1) reducing the speed of fast neutrons (2) cooling the reactor (3) absorbing neutrons (4) None of the above

Last Answer : (1) reducing the speed of fast neutrons Explanation: A graphite reactor is a nuclear reactor that uses carbon as a neutron moderator, which allows unenriched uranium to be used as nuclear fuel.

Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays. (A) X (B) α and β (C) Neutrons & gamma (D) Infrared

Description : Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays. (A) X (B) α and β (C) Neutrons & gamma (D) Infrared

Last Answer : (C) Neutrons & gamma

Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Description : Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Last Answer : ANSWER: Y -- NEUTRONS MODERATED TO RELATIVELY LOW ENERGIES.

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

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

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

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. The ... water B. Graphite C. Beryllium D. Sodium

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

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. The ... mass number only D. be all the above three

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

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 ... . absorbs thermal energy. Produced in the reactors

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?

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

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Description : Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Last Answer : (1) Boron Explanation: Boron shielding is used as a control for nuclear reactors, taking advantage of its high cross-section for neutron capture. Elemental boron is rare and ... aluminium. Crystalline boron is chemicallyinert and resistant to attack by boiling hydrofluoric or hydrochloric acid.

wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are - (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Description : wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are - (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Last Answer : (1) Boron and Cadmium Explanation: Since the continued chain reaction of a nuclear fission reactor depends upon at least one neutron from each fission being absorbed by another fissionable nucleus, the ... and then the control rods are slowly lifted until a chain reaction can just be sustained.

The two elements which are used to absorb the neutrons in nuclear fission during chain reaction

Description : The two elements which are used to absorb the neutrons in nuclear fission during chain reaction

Last Answer : Boran and Cadmium

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Description : Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Last Answer : Boron

Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Description : Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Last Answer :  Boron and Cadmium

The velocity of thermal (slow) neutrons triggering nuclear fissionreaction (having energy equal to 0.025 eV) is about __________metres/second.(A) 1100(B) 2200(C) 3300(D) 4400

Description : The velocity of thermal (slow) neutrons triggering nuclear fissionreaction (having energy equal to 0.025 eV) is about __________ metres/second. (A) 1100 (B) 2200 (C) 3300 (D) 4400

Last Answer : (B) 2200

The number of neutrons accompanying the formationof 54Xe139 and 38Sr94from the absorption of a slow neutron by 92U235,followed by nuclear fission is(A) 1(B) 2(C) 3(D) 4

Description : The number of neutrons accompanying the formationof 54Xe 139 and 38Sr 94 from the absorption of a slow neutron by 92U235 , followed by nuclear fission is (A) 1 (B) 2 (C) 3 (D) 4

Last Answer : (C) 3

After being mistreated by the moderators at Quora for the 3rd time, I started looking for an alternative. Yahoo answers isn't to my taste, several of the others I found in searches are no longer up...is Fluther the best Quora alternative? The layout is ok, but it seems pretty slow compared to Quora.

Description : After being mistreated by the moderators at Quora for the 3rd time, I started looking for an alternative. Yahoo answers isn't to my taste, several of the others I found in searches are no longer up...is Fluther the best Quora alternative? The layout is ok, but it seems pretty slow compared to Quora.

Last Answer : At some point, you need to look more critically at the common denominator and less at others. If you are still blaming others at your age, Fluther may be uncomfortable for you. Or comfy, considering all of the youth.

How come the moderators a so fast to moderate a question yet so slow to "unmoderate" it once rectified?

Description : How come the moderators a so fast to moderate a question yet so slow to "unmoderate" it once rectified?

Last Answer : [mod says] Because we all have other jobs that require our undivided attention. The pending questions pop up intermittently, but it isn’t like we jump, immediately, when they arrive. We get more than 300 email notices per day. Imagine getting and reading that many emails. We’re trying our best.

Is anyone concerned about the radioactivity from the crippled (and possibly melted down) nuclear reactors in Japan?

Description : Is anyone concerned about the radioactivity from the crippled (and possibly melted down) nuclear reactors in Japan?

Last Answer : I haven’t actually thought about that. Interesting. I honestly have no idea, but all I can say is… I sure hope the radiation exposure doesn’t spread.

Fast breeder reactors do not (A) Use Th-232 as fissile fuel (B) Convert fertile material to fissile material (C) Use fast neutrons for fission (D) Use molten sodium as coolant

Description : Fast breeder reactors do not (A) Use Th-232 as fissile fuel (B) Convert fertile material to fissile material (C) Use fast neutrons for fission (D) Use molten sodium as coolant

Last Answer : (A) Use Th-232 as fissile fuel

Research reactors are normally meant for (A) Producing high neutron flux 10 12 -10 13 neutrons/cm2 , sec and studying the effect of neutron bombardment on different materials (B) Accelerating the neutrons (C) Power generation (D) None of these

Description : Research reactors are normally meant for (A) Producing high neutron flux 10 12 -10 13 neutrons/cm2 , sec and studying the effect of neutron bombardment on different materials (B) Accelerating the neutrons (C) Power generation (D) None of these

Last Answer : (A) Producing high neutron flux 10 12 -10 13 neutrons/cm2 , sec and studying the effect of neutron bombardment on different materials

Moderators used in Nuclear Reactor?

Description : Moderators used in Nuclear Reactor?

Last Answer : Graphite and Heavy water

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

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

The ability of an atom to absorb neutrons is its neutron capture cross section. The unit of measurement for neutron capture cross section is: w) the nucleus volume x) capture capacity y) resonance quotient z) barn

Description : The ability of an atom to absorb neutrons is its neutron capture cross section. The unit of measurement for neutron capture cross section is: w) the nucleus volume x) capture capacity y) resonance quotient z) barn

Last Answer : ANSWER: Z -- BARN

Neutrons are slowed down in a nuclear reactor by – (1) Fissionable Material (2) Moderator (3) Control rods (4) Cooling system

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.

Neutrons are slowed down in a nuclear reactor by (1) Fissionable material (2) Moderator (3) Control rods (4) Cooling system

Description : Neutrons are slowed down in a nuclear reactor by (1) Fissionable material (2) Moderator (3) Control rods (4) Cooling system

Last Answer : Moderator

Why aren't the reactors and cooling tanks of nuclear power plants built below water level?

Description : Why aren't the reactors and cooling tanks of nuclear power plants built below water level?

Last Answer : answer:What would keep that water in once the area was flooded? If you open a dam, remove a levy, or open some kind of gate that water can flow both ways. A pump would allow you to control what comes and goes.

Japan's nuclear reactors have gone Chernobyl! Are you concerned?

Description : Japan's nuclear reactors have gone Chernobyl! Are you concerned?

Last Answer : I feel the same way about nuclear power that I did before this accident: It is too dangerous for humans to use safely. The consequences of accidents are too dire.

Thorium-fueled nuclear reactors - Pros and cons?

Description : Thorium-fueled nuclear reactors - Pros and cons?

Last Answer : I'm afraid that real development of commercial nuclear-powered energy has taken a hit for another generation with the recent accident. It's a shame, too, because as bad as this accident ... perception of nuclear accident will continue to be ecological catastrophe , regardless of the facts.

Spraying synthetic resin - How effective is such a measure going to be containing the Fukushima nuclear reactors?

Description : Spraying synthetic resin - How effective is such a measure going to be containing the Fukushima nuclear reactors?

Last Answer : Is there anything that absorbs radiation?

Should the executives be the first ones to undertake the suicide missions to save the failing nuclear reactors in Japan?

Description : Should the executives be the first ones to undertake the suicide missions to save the failing nuclear reactors in Japan?

Last Answer : Yes. A captain should go down with his ship, so to speak. Also should the president be on the front line armed and ready when instructing his country to invade a foreign nation? Hell yeah!

Which is used as a coolant in nuclear reactors? -General Knowledge

Description : Which is used as a coolant in nuclear reactors? -General Knowledge

Last Answer : The answer is 'Liquidsodium'

Which is used as a coolant in nuclear reactors? -General Knowledge

Description : Which is used as a coolant in nuclear reactors? -General Knowledge

Last Answer : answer:

Which is used as a coolant in nuclear reactors? -General Knowledge

Description : Which is used as a coolant in nuclear reactors? -General Knowledge

Last Answer : answer:

Amount of commercial energy being obtained from nuclear reactors in France is

Description : Amount of commercial energy being obtained from nuclear reactors in France is

Last Answer : Amount of commercial energy being obtained from nuclear reactors in France is A. 0.35 B. 0.51 C. 0.73 D. 0.42

What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Description : What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Last Answer : It's A and C. The sun and most other stars are fusion reaction engines, and hydrogen bomb (perhaps more properly a fusion nuclear weapon) apply nuclear fusion to do what they do.

What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Description : What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Last Answer : Need answer

What fuel is used in nuclear reactors?

Description : What fuel is used in nuclear reactors?

Last Answer : A nuclear reactor is a device to initiate, control, and sustain a nuclear chain reaction. Nuclear power is energy produced from controlled nuclear reactions. When it comes to just standard fuel across the table it would have to be: Plutonium, Uranium, and Thorium.

Which countries have nuclear reactors?

Description : Which countries have nuclear reactors?

Last Answer : So far, only one reactor has successfully produced more energy than was expended, and that one is in California. But 23 countries currently have experimental reactors: USA, Canada, China, Japan, ... Spain, France, Germany, Italy, Netherlands, Portugal, Russia, Switzerland, UK, Ukraine, and Sweden.

The basic process taking place in nuclear reactors is

Description : The basic process taking place in nuclear reactors is

Last Answer : Fission

Which of the following is used as a moderator in nuclear reactors?

Description : Which of the following is used as a moderator in nuclear reactors?

Last Answer : Graphite

Why is a moderator used in nuclear reactors?

Description : Why is a moderator used in nuclear reactors?

Last Answer : – In order to slow down the speed of neutrons

Which is used as a coolant in nuclear reactors?

Description : Which is used as a coolant in nuclear reactors?

Last Answer : – Liquid sodium

Consider the following statements: 1. Bordeaux mixture consists of sodium bromide and lime 2. Toothpastes contain calcium carbonate 3. Zinc amalgam is used in dental fillings 4. Liquid sodium is used as a coolant in nuclear reactors The correct statements are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Description : Consider the following statements: 1. Bordeaux mixture consists of sodium bromide and lime 2. Toothpastes contain calcium carbonate 3. Zinc amalgam is used in dental fillings 4. Liquid sodium is used as a coolant in nuclear reactors The ... 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Last Answer : Ans:(c)