Why are zinc bars attached to the hulls of ship to prevent hull from rusting?

Why are zinc bars attached to the hulls of ship to prevent hull from rusting?
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The purpose of an impressed current cathodic protection system aboard ship is to _______________. A. prevent corrosion of the hull, propeller, rudder and line shafting B. neutralize the vessel's stray magnetic fields which would interfere with radar C. protect engine room and deck machinery from oxidation in the presence of salt air D. maintain a minimum constant alternator load to prevent overheating

Description : The purpose of an impressed current cathodic protection system aboard ship is to _______________. A. prevent corrosion of the hull, propeller, rudder and line shafting B. neutralize the vessel's ... the presence of salt air D. maintain a minimum constant alternator load to prevent overheating

Last Answer : Answer: A

Galvanising (i.e., zinc coating) of steel sheets is done to (A) Prevent its rusting by contact with corrosive atmosphere (B) Protect the base metal by cathodic protection (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Galvanising (i.e., zinc coating) of steel sheets is done to (A) Prevent its rusting by contact with corrosive atmosphere (B) Protect the base metal by cathodic protection (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

A circuit that has one of two wires in contact with the hull of a ship, is called a _____________. A. grounded circuit B. short circuit C. series circuit D. closed circuit

Description : A circuit that has one of two wires in contact with the hull of a ship, is called a _____________. A. grounded circuit B. short circuit C. series circuit D. closed circuit

Last Answer : Answer: A

A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water? (A) 10 m/sec (B) 25 m/sec (C) 2 m/sec (D) 50 m/sec

Description : A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water? (A) 10 m/sec (B) 25 m/sec (C) 2 m/sec (D) 50 m/sec

Last Answer : Answer: Option C

Iron is prevented from rusting by coating with zinc. This process is called as – (1) Galvanisation (2) Corrosion (3) Sublimation (4) Reduction

Description : Iron is prevented from rusting by coating with zinc. This process is called as – (1) Galvanisation (2) Corrosion (3) Sublimation (4) Reduction

Last Answer : (1) Galvanisation Explanation: Galvanization is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. The term is derived from the name of Italian scientist Luigi ... is hot-dip galvanization, in which steel parts are sub-merged in a bath of molten zinc.

The method of protecting iron from rusting, by coating a thin layer of Zinc is called - (1) Galvanizing (2) rancidity (3) Alloy (4) Pulverizing

Description : The method of protecting iron from rusting, by coating a thin layer of Zinc is called - (1) Galvanizing (2) rancidity (3) Alloy (4) Pulverizing

Last Answer : (1) Galvanizing Explanation: Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting.

Iron is prevented from rusting by coating with zinc. This process is called as (1) Galvanisation (2) Corrosion (3) Sublimation (4) Reduction

Description : Iron is prevented from rusting by coating with zinc. This process is called as (1) Galvanisation (2) Corrosion (3) Sublimation (4) Reduction

Last Answer : Galvanisation

The metal, used to galvanise iron to protect it from rusting is (1) Zinc (2) Chromium (3) Lead (4) Antimony

Description : The metal, used to galvanise iron to protect it from rusting is (1) Zinc (2) Chromium (3) Lead (4) Antimony

Last Answer : Zinc

How can you prevent railings from rusting?

Description : How can you prevent railings from rusting?

Last Answer : Need answer

The best way to prevent a car from rusting?

Description : The best way to prevent a car from rusting?

Last Answer : Wikihow has a section on "What's the best way to prevent rust from forming. After reading the article I hope you will have gained some knowledge from the answers.

Which of the following is not favourable to prevent iron from rusting?

Description : Which of the following is not favourable to prevent iron from rusting?

Last Answer : Annealing

Which of the following is not favourable to prevent iron from rusting?

Description : Which of the following is not favourable to prevent iron from rusting?

Last Answer : Annealing

can I compost black walnut leaves and nut hulls in regular compost

Description : can I compost black walnut leaves and nut hulls in regular compost

Last Answer : I read somewhere that Black walnut tree are poisionus (sp) to other trees in the yard. Be Very careful and ask someone else about this.

Why won't hulls split to let nuts fall out of english walnuts?

Description : Why won't hulls split to let nuts fall out of english walnuts?

Last Answer : Need Answer

What type of water conditions do deep hulls operate best in?

Description : What type of water conditions do deep hulls operate best in?

Last Answer : shallow water

What type of water do deep v hulls operate best in?

Description : What type of water do deep v hulls operate best in?

Last Answer : shallow water

Froude number is significant in (A) Supersonics, as with projectile and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls (D) All of the above

Description : Froude number is significant in (A) Supersonics, as with projectile and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion ... gravity forces, and wave making effect, as with ship's hulls (D) All of the above

Last Answer : Answer: Option C

Reynolds number is significant in (A) Supersonics, as with projectile and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls (D) All of the above

Description : Reynolds number is significant in (A) Supersonics, as with projectile and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion ... gravity forces, and wave making effect, as with ship's hulls (D) All of the above

Last Answer : Answer: Option B

Mach number is significant in (A) Supersonics, as with projectiles and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion through two fluids where there is a surface of discontinuity, gravity force, and wave making effects, as with ship's hulls (D) All of the above

Description : Mach number is significant in (A) Supersonics, as with projectiles and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion through ... gravity force, and wave making effects, as with ship's hulls (D) All of the above

Last Answer : Answer: Option A

The rungs of a 10 foot ladder attached to a ship are 1 foot apart. If the water is rising at the rate of one foot an hour, how long will it take until the water covers over the ladder? -Riddles

Description : The rungs of a 10 foot ladder attached to a ship are 1 foot apart. If the water is rising at the rate of one foot an hour, how long will it take until the water covers over the ladder? -Riddles

Last Answer : It will never cover the ladder because as the water rises, so will the floating ship.

A zinc plate is attached to the knob of a negatively charged electroscope. What will happen to the leaves of the electroscope when ultraviolet light is shown on the zinc plate. Will the leaves: w) collapse at once x) gradually come together y) gradually spread further apart z) remain unaffected

Description : A zinc plate is attached to the knob of a negatively charged electroscope. What will happen to the leaves of the electroscope when ultraviolet light is shown on the zinc plate. Will the leaves: w) collapse at once x) gradually come together y) gradually spread further apart z) remain unaffected

Last Answer : ANSWER: X -- GRADUALLY COME TOGETHER

I'm thinking about buying a boat with a wooden hull. Is this a terrible idea?

Description : I'm thinking about buying a boat with a wooden hull. Is this a terrible idea?

Last Answer : If that’s what you want then it’s a great idea!

Sailboat repair question. How to go about filling in gouges on the hull?

Description : Sailboat repair question. How to go about filling in gouges on the hull?

Last Answer : My first instinct is that the ratio of epoxy/hardening agent may have been a little off in your putty mixture. You may have to remove it all and start over. Have you called a boatyard or even an automotive body shop for advice? I did find some repair manuals on Amazon, not too pricy.

How big where the holes in the Titanic's hull made by the iceberg?

Description : How big where the holes in the Titanic's hull made by the iceberg?

Last Answer : answer:It likely was not just the breach in the hull that was the Titanic's downfall. The bulkheads were built so that water could flow over the top into adjacent compartments. Also there ... -titanic-sank-1349579.html Overall the design and materials were a major contributing factor to her sinking.

The curve that follows a convex hull property is: a.Cubic spline b.B-spline c.Bezier curve d.Both (b) and (c)

Description : The curve that follows a convex hull property is: a.Cubic spline b.B-spline c.Bezier curve d.Both (b) and (c)

Last Answer : b.B-spline

how do I freeze purple hull peas?

Description : how do I freeze purple hull peas?

Last Answer : Need Answer

Do purple hull pies keep producing all season are just one time

Description : Do purple hull pies keep producing all season are just one time

Last Answer : Need Answer

How to prepare purple hull peas for freezing?

Description : How to prepare purple hull peas for freezing?

Last Answer : Need Answer

Do you hull yellow bush beans or do you eat the pods

Description : Do you hull yellow bush beans or do you eat the pods

Last Answer : Need Answer

How do I soften a peach hull so I can plant the peach seed

Description : How do I soften a peach hull so I can plant the peach seed

Last Answer : Need Answer

what are the little white worms on purple hull peas?

Description : what are the little white worms on purple hull peas?

Last Answer : Need Answer

Can you plant purple hull peas in July?

Description : Can you plant purple hull peas in July?

Last Answer : Yes, and the plants cycle is from Mid- June to the first to second week of August. You should have no problems. -Birdy

How many pounds of purple hull peas needed to plant 960 feet of row?

Description : How many pounds of purple hull peas needed to plant 960 feet of row?

Last Answer : So, one and a half (1.5) pounds of purple hull peas is roughly 3080 seeds. Purple Hull Peas require at minimum 2.5" of space between each plant.. You have 960 Feet of row space, which is 11,520 ... (defective seeds, etc.), then it would be wise to have 4 lbs of seeds for your project. -Birdy

What is the opposite of hull ?

Description : What is the opposite of hull ?

Last Answer : The opposite of the former

When freezing fresh purple hull peas for later, is it better to freeze them in water or freeze them dry? water

Description : When freezing fresh purple hull peas for later, is it better to freeze them in water or freeze them dry? water

Last Answer : Need Answer

What hull is a planing hull?

Description : What hull is a planing hull?

Last Answer : A planning hull is a hull of a boat that has its weight supported more by hydrodynamic lift, rather than hydrostatic lift or buoyancy.These boats are built for speed.

Who was Reformer who set up hull house?

Description : Who was Reformer who set up hull house?

Last Answer : Need answer

What was the purpose of Titanic's inner hull?

Description : What was the purpose of Titanic's inner hull?

Last Answer : Titanic's double-hull was a safety feature to stay afloat evenif suffering a blow to out it's outside hull.

What hull type is best used on ponds?

Description : What hull type is best used on ponds?

Last Answer : Need answer

When was Hull House founded?

Description : When was Hull House founded?

Last Answer : It was founded in 1889, and it was built in 1856. :)

Contents of Marine Insurance include– (A) Insurance of Cargo only (B) Insurance of Freight only (C) Insurance of Hull only (D) Insurance of Cargo, Freight & Hull

Description : Contents of Marine Insurance include– (A) Insurance of Cargo only (B) Insurance of Freight only (C) Insurance of Hull only (D) Insurance of Cargo, Freight & Hull

Last Answer : Answer: Insurance of Cargo, Freight Hull

When using a megohmmeter to determine which shunt field coil is grounded in a DC machine, you must ____________. A. insulate the field frame from the ship's hull B. disconnect each shunt field coil before testing C. use a motor driven high capacity megohmmeter D. remove all main line lead connections before testing

Description : When using a megohmmeter to determine which shunt field coil is grounded in a DC machine, you must ____________. A. insulate the field frame from the ship's hull B. disconnect each shunt ... C. use a motor driven high capacity megohmmeter D. remove all main line lead connections before testing

Last Answer : Answer: B

The symbol at coordinates '15R' in the illustration indicate a connection to ___________. EL-0100 A. the analog circuitry common bus B. ground C. the vessel's hull D. the console's chassis

Description : The symbol at coordinates '15R' in the illustration indicate a connection to ___________. EL-0100 A. the analog circuitry common bus B. ground C. the vessel's hull D. the console's chassis

Last Answer : Answer: A

The symbol at coordinates '11R' in the illustration indicate a connection to _____________. EL-0100 A. ground B. the console chassis C. the digital circuitry common bus D. earth through the vessel's hull

Description : The symbol at coordinates '11R' in the illustration indicate a connection to _____________. EL-0100 A. ground B. the console chassis C. the digital circuitry common bus D. earth through the vessel's hull

Last Answer : Answer: C

In an impressed current cathodic protection system, the anode is ____________. A. connected to the hull and deteriorates with time B. insulated from the hull and does not waste away C. connected to the hull but does not waste away D. insulated from the hull but deteriorates with time

Description : In an impressed current cathodic protection system, the anode is ____________. A. connected to the hull and deteriorates with time B. insulated from the hull and does not waste away C. connected to the hull but does not waste away D. insulated from the hull but deteriorates with time

Last Answer : Answer: B

In electronic circuits, DC voltages can be positive (+) or negative (-) when measured with respect to the _________. A. printed circuit board 'common' trace B. chassis, console frame or hull 'ground' C. analogue or digital circuitry 'common' bus D. all of the above

Description : In electronic circuits, DC voltages can be positive (+) or negative (-) when measured with respect to the _________. A. printed circuit board 'common' trace B. chassis, console frame or hull 'ground' C. analogue or digital circuitry 'common' bus D. all of the above

Last Answer : Answer: D

The first artificial hybrid was made by a. Mendel b. Thomas Fairchild c. Shull d. Hull

Description : The first artificial hybrid was made by a. Mendel b. Thomas Fairchild c. Shull d. Hull

Last Answer : b. Thomas Fairchild

Does current flow through hull during welding?

Description : Does current flow through hull during welding?

Last Answer : Ask E/O. Yes I think