BES MRB ( Elements 101 ) - 1.docx

100問 • 3年前

Jacky Shane Luyas Buhia

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問題一覧

The maximum stress to which a standardized test specimen may be subjected without a permanent deformation.

C. Elastic limit

The modulus of elasticity is a measure of:

A. Stiffness

Aging at moderately elevated temperature expedites the process and

B. Artificial aging

It is a tendency to fracture without appreciable deformation

B. Brittleness

It is the characteristic of exhibiting different properties when tested in different directions

B. Anistropy

It is one in which specimen, supported at both ends as a simple beam is broken by the impact strength of the metal

A. Charpy test

Steel that has been deoxidized with a strong deoxidizing agent such as silicon or aluminum, in order to eliminate a reaction between the carbon and oxygen during solidification.

C. Killed steel

Involves the loss of ductility because of a physical or chemical change of the material is known as

A. Embrittlement

A material commonly used for shielding or screening magnetism

D. Soft Iron

A magnet is able to attract

D. Nickel, cobalt, and steel

In threaded members, which of the following defines N.C?

C. National coarse

In threaded members, which of the following represents N. F?

C. National file

What tool used in precision work to smooth or enlarge holes?

B. Reamer

Which of the following chisels would be used for cutting oil grooves?

B. Round-nose chisel

Which of the following is not a cut of file?

B. Half-round

How do you call the tool used for cleaning files?

C. File card

Which of the following is the smallest size drill?

A. # 80

Which of the following is the largest size drill?

B. Z

The size of a drill is stamped on the:

C. Shank

Which of the following materials is used for making permanent magnets?

D. All three mentioned

One of the following is the best conductor of electricity. Which one/

A. Graphite

Dielectric strength of a material depends on the material's

D. All of these

Which medium has highest value of dielectric strength?

B. Mica

Which of the following is a primary cell?

A. Mercury — oxide

Which of the following contact point metals has highest melting point?

C. Gold

A material best suited for manufacturing of fuse wire

B. Silver

The laminations are made from

B. Silicon sheet steel

Which of the following metals gets deposited to provide an undercut for chromium?

C. Bronze

In nickel iron cell, the electrolyte is:

B. Dilute potassium hydroxide

Which of the following is not a standard thread form?

A. Square

How do you call the tool used to cut threads in a hole?

C. Tap

Hand taps are provided in sets of three. Which of the following set of three?

B. Taper, plug and bottom

Which of the following taps should be used to start a thread?

D. Taper

Which of the following size of the drill is used in preparing to tap a hole?

C. Smaller than the size of the tap

Pipe taps are:

B. Tapered

When preparing to tap a hole for a pipe fitting the size of the drill will be:

C. Equal to the size of the tap

Which of the following does not have to be lubricated when drilling?

B. Monel

How do you call the tool used when cutting a hole in the side of a round piece of metal?

B. “V” block

When measuring a drill for size measure across the:

A. Margins

Which of the following is not a primary cell?

C. Silver zinc

Select from the conductors below that has the least electrical conductivity

A. Lead

The material used for commutator brushes is mostly

C. Carbon

Generally, the material for thermocouple is

D. Any of these

Select the best conductor of electricity

B. Silver

Any heating ad cooling of steel that produces a rounded or globular form of carbide.

A. Spheroidizing

Steel that has been hammered rolled or drawn in the process of manufacture.

A. Wrought steel

Which of the following improves red hardness?

B. Cobalt

An alloy of nickel and copper.

A. Monel

Commutator segments are made of

C. Copper

If you wanted to check the face of a pump slide valve or other flat-faced valve, you could check for trueness on a:

C. Surface plate

Which of the following is used to keep metal clean while soldering?

B. Flux

Before splicing electric wires, they should be:

C. Cleaned and tinned.

To check the speed of aotor or other rotary machine, one would use a:

B. Tachometer

Before drilling a hole in a piece of metal, it should be:

C. Center- punched.

A tap or die marked 1/4 - 20 indicates:

B. 1/4" diameter - 20 threads per in.

After a piece of pipe has been cut, the hole is cleaned out with a:

A. Piper reamer.

How do you call the tool(s) used for cutting pipe threads?

B. Pipe threader

How do you call the tool used when working with larger sizes of pipe?

D. A or B

What tool is used when preparing to put fittings on copper tubing?

C. Flaring tool.

What are the most commonly used materials as photo cathode for the photoelectric emission?

C. Arsenic and boron.

Manganese is an alloy of

A. Copper, manganese and nickel

The one that is an acceptor impurity element.

B. Gallium

Which of the following is not a method of non- destructive testing of steel casting and forging?

D. Chemical analysis

All of the following statements about rusting of iron are correct, except:

D. Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby.

If 1080 is annealed by very slow cooling from 1000°C to ambient temperature, it's microstructure will consist almost solely of;

D. Pearlite

Steel can be strengthened by all of the following practices, EXCEPT:

A. Annealing.

Intrinsic silicone becomes extrinsically conductive with electrons as majority carriers when doped with which of the following?

A. Antimony

The linear port of the stress - strain diagram of steel is Kno as the:

D. Elastic range

Imperfections within metallic crystal structures may be all of the following, EXCEPT:

B. Ion pairs missing in ionic crystals

A steel numbered SAE - AISI, C1035 when not rolled and contains 0.60% 1.30% carbon used when extre hardness is required.

C. High carbon steel.

Which of the following alloying elements used in making high speed steel?

A. Molybdenum.

Which of the following alloying ised in springs to make more reliant?

A. Silicon

It refers to that property in steel which resist indention pr penetration. It is usually expressed in forms of the area of an indention made by a special ball under a standard load or the depth of a special indentor.

A. Hardness.

The distance from a point on a screw thread to a corresponding point on an adjacent thread, measured parallel to the axis.

A. Pitch.

The top surface joining the two sides of a thread.

B. Lead

The amount of variation permitted in the size of a part. It is yhe difference between the limits of maximum and minimum dimensions of a given part. It may be expressed as plus, minus or as both plus and minus.

A. Tolerance.

The instrument used to reshape a grinding wheel that is grooved or out of round is called

C. Wheel dresser.

The instrument used to remove old packing from packing glands and stuffing boxes are called:

A. Packing tools

When working on bearings and checking for high spots, it is customary to apply what?

D. Prussian Blue

When a metal is cold worked, all of the following generally occur, EXCEPT:

B. Grains become equal axed

Hard water is water, which contains soluble salts of which of the following

C. Calcium

Which of the following metals has the highest specific heat capacity at 1000C?

A. aluminum

Aluminum pistons are either cast or

B. Forged

Valves and piping in an ammonia system are made of

A. Iron

Which of the following gasket materials should be used on a Freon system?

D. A and B

The nonferrous alloy corrodes in ammonia is:

D. All of these

What is used in the main condenser to control electrolysis?

C. Zinc Plate

Which of the following types of packing would be used on steam joints?

D. A or C

The process applied to iron pipe, which retards corrosion, is called

A. Galvanizing

A scriber is made from what steel?

C. tool steel

A classification of iron ore which contains 72.5% iron when pure and the remaining percentage are impurities.

B. Magnetite

Which of the following iron ore also known as “brown hematite” or ferric oxide a yellowish brown powder?

C. Limatite

Which of the following represents manganese steel?

A. 13XX

It is another kind of furnace cast iron is remelted to make into cast iron. The furnace is charges with layers of coke and pig iron plus scrap iron.

C. Cupola

A furnace which consists of blowing a stream of air through a molten mass of iron pig. A stream of air is turned on through the wind box and enters the converter at the bottom. Manganese, carbon and other elements of varying amounts are added to produce steel which is then poured and solidifies.

D. Bessemer

A furnace similar to open-heart. The principal difference is the method of heating the charged. It is used in producing quality of steels because melting and refining is closely controlled.

B. Electric furnace

It is the process of reheating or drawing of metal that has been hardened to a comparatively low temperature in order to relieve the hardening strain and increase the toughness of the steel.

A. Tempering

Case hardening is the process of hardening the outer surface of the metal and inner parts are soft. What percentage of carbon content that this type of hardening allowed?

A. 15% and above

A steel numbered SAE -AISI, C1018 and contains 0.10% to 0.30% carbon.

A. Low carbon steel

100

A steel numbered SAE -AISI, C1035 when not rolled and contains 0.30% to 0.60% carbon

B. Medium carbon steel

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問題一覧

The maximum stress to which a standardized test specimen may be subjected without a permanent deformation.

C. Elastic limit

The modulus of elasticity is a measure of:

A. Stiffness

Aging at moderately elevated temperature expedites the process and

B. Artificial aging

It is a tendency to fracture without appreciable deformation

B. Brittleness

It is the characteristic of exhibiting different properties when tested in different directions

B. Anistropy

It is one in which specimen, supported at both ends as a simple beam is broken by the impact strength of the metal

A. Charpy test

Steel that has been deoxidized with a strong deoxidizing agent such as silicon or aluminum, in order to eliminate a reaction between the carbon and oxygen during solidification.

C. Killed steel

Involves the loss of ductility because of a physical or chemical change of the material is known as

A. Embrittlement

A material commonly used for shielding or screening magnetism

D. Soft Iron

A magnet is able to attract

D. Nickel, cobalt, and steel

In threaded members, which of the following defines N.C?

C. National coarse

In threaded members, which of the following represents N. F?

C. National file

What tool used in precision work to smooth or enlarge holes?

B. Reamer

Which of the following chisels would be used for cutting oil grooves?

B. Round-nose chisel

Which of the following is not a cut of file?

B. Half-round

How do you call the tool used for cleaning files?

C. File card

Which of the following is the smallest size drill?

A. # 80

Which of the following is the largest size drill?

B. Z

The size of a drill is stamped on the:

C. Shank

Which of the following materials is used for making permanent magnets?

D. All three mentioned

One of the following is the best conductor of electricity. Which one/

A. Graphite

Dielectric strength of a material depends on the material's

D. All of these

Which medium has highest value of dielectric strength?

B. Mica

Which of the following is a primary cell?

A. Mercury — oxide

Which of the following contact point metals has highest melting point?

C. Gold

A material best suited for manufacturing of fuse wire

B. Silver

The laminations are made from

B. Silicon sheet steel

Which of the following metals gets deposited to provide an undercut for chromium?

C. Bronze

In nickel iron cell, the electrolyte is:

B. Dilute potassium hydroxide

Which of the following is not a standard thread form?

A. Square

How do you call the tool used to cut threads in a hole?

C. Tap

Hand taps are provided in sets of three. Which of the following set of three?

B. Taper, plug and bottom

Which of the following taps should be used to start a thread?

D. Taper

Which of the following size of the drill is used in preparing to tap a hole?

C. Smaller than the size of the tap

Pipe taps are:

B. Tapered

When preparing to tap a hole for a pipe fitting the size of the drill will be:

C. Equal to the size of the tap

Which of the following does not have to be lubricated when drilling?

B. Monel

How do you call the tool used when cutting a hole in the side of a round piece of metal?

B. “V” block

When measuring a drill for size measure across the:

A. Margins

Which of the following is not a primary cell?

C. Silver zinc

Select from the conductors below that has the least electrical conductivity

A. Lead

The material used for commutator brushes is mostly

C. Carbon

Generally, the material for thermocouple is

D. Any of these

Select the best conductor of electricity

B. Silver

Any heating ad cooling of steel that produces a rounded or globular form of carbide.

A. Spheroidizing

Steel that has been hammered rolled or drawn in the process of manufacture.

A. Wrought steel

Which of the following improves red hardness?

B. Cobalt

An alloy of nickel and copper.

A. Monel

Commutator segments are made of

C. Copper

If you wanted to check the face of a pump slide valve or other flat-faced valve, you could check for trueness on a:

C. Surface plate

Which of the following is used to keep metal clean while soldering?

B. Flux

Before splicing electric wires, they should be:

C. Cleaned and tinned.

To check the speed of aotor or other rotary machine, one would use a:

B. Tachometer

Before drilling a hole in a piece of metal, it should be:

C. Center- punched.

A tap or die marked 1/4 - 20 indicates:

B. 1/4" diameter - 20 threads per in.

After a piece of pipe has been cut, the hole is cleaned out with a:

A. Piper reamer.

How do you call the tool(s) used for cutting pipe threads?

B. Pipe threader

How do you call the tool used when working with larger sizes of pipe?

D. A or B

What tool is used when preparing to put fittings on copper tubing?

C. Flaring tool.

What are the most commonly used materials as photo cathode for the photoelectric emission?

C. Arsenic and boron.

Manganese is an alloy of

A. Copper, manganese and nickel

The one that is an acceptor impurity element.

B. Gallium

Which of the following is not a method of non- destructive testing of steel casting and forging?

D. Chemical analysis

All of the following statements about rusting of iron are correct, except:

D. Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby.

If 1080 is annealed by very slow cooling from 1000°C to ambient temperature, it's microstructure will consist almost solely of;

D. Pearlite

Steel can be strengthened by all of the following practices, EXCEPT:

A. Annealing.

Intrinsic silicone becomes extrinsically conductive with electrons as majority carriers when doped with which of the following?

A. Antimony

The linear port of the stress - strain diagram of steel is Kno as the:

D. Elastic range

Imperfections within metallic crystal structures may be all of the following, EXCEPT:

B. Ion pairs missing in ionic crystals

A steel numbered SAE - AISI, C1035 when not rolled and contains 0.60% 1.30% carbon used when extre hardness is required.

C. High carbon steel.

Which of the following alloying elements used in making high speed steel?

A. Molybdenum.

Which of the following alloying ised in springs to make more reliant?

A. Silicon

A. Hardness.

The distance from a point on a screw thread to a corresponding point on an adjacent thread, measured parallel to the axis.

A. Pitch.

The top surface joining the two sides of a thread.

B. Lead

A. Tolerance.

The instrument used to reshape a grinding wheel that is grooved or out of round is called

C. Wheel dresser.

The instrument used to remove old packing from packing glands and stuffing boxes are called:

A. Packing tools

When working on bearings and checking for high spots, it is customary to apply what?

D. Prussian Blue

When a metal is cold worked, all of the following generally occur, EXCEPT:

B. Grains become equal axed

Hard water is water, which contains soluble salts of which of the following

C. Calcium

Which of the following metals has the highest specific heat capacity at 1000C?

A. aluminum

Aluminum pistons are either cast or

B. Forged

Valves and piping in an ammonia system are made of

A. Iron

Which of the following gasket materials should be used on a Freon system?

D. A and B

The nonferrous alloy corrodes in ammonia is:

D. All of these

What is used in the main condenser to control electrolysis?

C. Zinc Plate

Which of the following types of packing would be used on steam joints?

D. A or C

The process applied to iron pipe, which retards corrosion, is called

A. Galvanizing

A scriber is made from what steel?

C. tool steel

A classification of iron ore which contains 72.5% iron when pure and the remaining percentage are impurities.

B. Magnetite

Which of the following iron ore also known as “brown hematite” or ferric oxide a yellowish brown powder?

C. Limatite

Which of the following represents manganese steel?

A. 13XX

It is another kind of furnace cast iron is remelted to make into cast iron. The furnace is charges with layers of coke and pig iron plus scrap iron.

C. Cupola

D. Bessemer

A furnace similar to open-heart. The principal difference is the method of heating the charged. It is used in producing quality of steels because melting and refining is closely controlled.

B. Electric furnace

It is the process of reheating or drawing of metal that has been hardened to a comparatively low temperature in order to relieve the hardening strain and increase the toughness of the steel.

A. Tempering

Case hardening is the process of hardening the outer surface of the metal and inner parts are soft. What percentage of carbon content that this type of hardening allowed?

A. 15% and above

A steel numbered SAE -AISI, C1018 and contains 0.10% to 0.30% carbon.

A. Low carbon steel

100

A steel numbered SAE -AISI, C1035 when not rolled and contains 0.30% to 0.60% carbon

B. Medium carbon steel