Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is (A) Malleable iron (B) Grey cast iron (C) Chilled cast iron (D) White cast iron

Out of the following, the best material capable of withstanding shock &
vibration without the danger of cracking is
(A) Malleable iron
(B) Grey cast iron
(C) Chilled cast iron
(D) White cast iron
by

1 Answer

Answer :

Option A
by

Related questions

__________ iron is produced, when molten pig iron is chilled suddenly. (A) White cast (B) Grey cast (C) Wrought (D) None of these

Description : __________ iron is produced, when molten pig iron is chilled suddenly. (A) White cast (B) Grey cast (C) Wrought (D) None of these

Last Answer : (A) White cast

__________ iron is produced by the annealing of white cast iron. (A) Malleable (B) Nodular (C) Ductile (D) Grey

Description : __________ iron is produced by the annealing of white cast iron. (A) Malleable (B) Nodular (C) Ductile (D) Grey

Last Answer : (A) Malleable

Annealing of white cast iron produces __________ iron. (A) Grey (B) Nodular (C) Malleable (D) Spheroidal

Description : Annealing of white cast iron produces __________ iron. (A) Grey (B) Nodular (C) Malleable (D) Spheroidal

Last Answer : (C) Malleable

Pick out the wrong statement. (A) Wrought iron contains about 0.02% carbon (B) Wrought iron cannot be easily forged and welded (C) The chilled cast iron does not contain graphite (D) Spheroidal grey cast iron contains graphite flakes

Description : Pick out the wrong statement. (A) Wrought iron contains about 0.02% carbon (B) Wrought iron cannot be easily forged and welded (C) The chilled cast iron does not contain graphite (D) Spheroidal grey cast iron contains graphite flakes

Last Answer : (B) Wrought iron cannot be easily forged and welded

Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable

Description : Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable

Last Answer : (A) Brittle

White cast iron is not (A) Malleable(B) Whitish in color(C) Brittle(D) Strong and hard

Description : White cast iron is not (A) Malleable (B) Whitish in color (C) Brittle (D) Strong and hard

Last Answer : (A) Malleable

- Material used for hand slide is (a) chilled cast iron. (b) cast iron (c) mild steel. (d) gun metal

Description : - Material used for hand slide is (a) chilled cast iron. (b) cast iron (c) mild steel. (d) gun metal

Last Answer : (c) mild steel

White cast iron as compared to grey cast iron is (A) More durable (B) Very brittle (C) Very hard (D) All (A), (B) & (C)

Description : White cast iron as compared to grey cast iron is (A) More durable (B) Very brittle (C) Very hard (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

A material capable of undergoing large permanent deformation, when subjected to compression is termed as (A) Malleable (B) Ductile (C) Brittle (D) None of these

Description : A material capable of undergoing large permanent deformation, when subjected to compression is termed as (A) Malleable (B) Ductile (C) Brittle (D) None of these

Last Answer : (A) Malleable

For a traction transformer circuit breaker state: 1) Rated current and rupturing capacity 2) Any two tests it should be capable of withstanding 3) Overall tripping time and relay time.

Description : For a traction transformer circuit breaker state: 1) Rated current and rupturing capacity 2) Any two tests it should be capable of withstanding 3) Overall tripping time and relay time.

Last Answer : Ans: 1) Rated current --- 750 A and Rupturing capacity --- 500 MVA  2) Any two tests it should be capable of withstanding --- Breaking test , Reclosing test , Endurance test ( any two )  3) Overall tripping time --- 0.14 sec and Relay time --- 0.04 sec 

Ball bearings are generally made of (A) Plain carbon steel (B) Chrome carbon steel (C) Stainless steel (D) Malleable cast iron

Description : Ball bearings are generally made of (A) Plain carbon steel (B) Chrome carbon steel (C) Stainless steel (D) Malleable cast iron

Last Answer : (B) Chrome carbon steel

The most distinguished property of malleable cast iron is its high (A) Ductility (B) Hardness (C) Malleability (D) None of these

Description : The most distinguished property of malleable cast iron is its high (A) Ductility (B) Hardness (C) Malleability (D) None of these

Last Answer : (A) Ductility

Which one has the maximum tensile strength out of the following? (A) Nodular cast iron (B) Pig iron (C) White cast iron (D) Grey cast iron

Description : Which one has the maximum tensile strength out of the following? (A) Nodular cast iron (B) Pig iron (C) White cast iron (D) Grey cast iron

Last Answer : (A) Nodular cast iron

A mould board of MB plough is made of? a Cast iron b Chilled cast iron c Mild steel d Soft centre steel

Description : A mould board of MB plough is made of? a Cast iron b Chilled cast iron c Mild steel d Soft centre steel

Last Answer : d Soft centre steel

Shares are make of a) Chilled cast iron b) Steel c) Both d) None

Description : Shares are make of a) Chilled cast iron b) Steel c) Both d) None

Last Answer : Both

Share for use in sandy soils are made of A)chilled cast iron. B)cast iron C)mild steel. D)gun metal

Description : Share for use in sandy soils are made of A)chilled cast iron. B)cast iron C)mild steel. D)gun metal

Last Answer : Share for use in sandy soils are made of A)chilled cast iron. B)cast iron C)mild steel. D)gun metal

Mould board are usually made from a. Soft centre steel b. Hardened carbon steel c. Chilled cast iron d. Mild steel

Description : Mould board are usually made from a. Soft centre steel b. Hardened carbon steel c. Chilled cast iron d. Mild steel

Last Answer : a. Soft centre steel

__________ iron is produced, when molten pig iron is allowed to cool gradually. (A) White cast (B) Grey cast (C) Wrought (D) None of these

Description : __________ iron is produced, when molten pig iron is allowed to cool gradually. (A) White cast (B) Grey cast (C) Wrought (D) None of these

Last Answer : (B) Grey cast

__________ of grey cast iron produces white cast iron. (A) Tempering (B) Rapid heating (C) Rapid cooling (D) Slow cooling

Description : __________ of grey cast iron produces white cast iron. (A) Tempering (B) Rapid heating (C) Rapid cooling (D) Slow cooling

Last Answer : Option B

Cast iron is (A) Used for making shock resisting parts (B) Manufactured in cupola and is brittle (C) Having compressive strength more than its tensile strength(D) All (A), (B) & (C)

Description : Cast iron is (A) Used for making shock resisting parts (B) Manufactured in cupola and is brittle (C) Having compressive strength more than its tensile strength (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Which material is suitable for shaft material? a. High speed steel b. Stainless steel or high carbon steel c. Grey cast iron d. Steel having approx. 0.4% carbon and 0.8% manganese

Description : Which material is suitable for shaft material? a. High speed steel b. Stainless steel or high carbon steel c. Grey cast iron d. Steel having approx. 0.4% carbon and 0.8% manganese

Last Answer : d. Steel having approx. 0.4% carbon and 0.8% manganese

The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to (A) Grey cast iron (B) White cast iron (C) Mottled cast iron (D) Toughed cast iron

Description : The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to (A) Grey cast iron (B) White cast iron (C) Mottled cast iron (D) Toughed cast iron

Last Answer : Answer: Option C

Ability of a material to __________ is indicated by its damping capacity. (A) Withstand compression (B) Absorb vibration (C) Absorb shock (D) None of these

Description : Ability of a material to __________ is indicated by its damping capacity. (A) Withstand compression (B) Absorb vibration (C) Absorb shock (D) None of these

Last Answer : (B) Absorb vibration

A material subjected __________ must have high resilience. (A) Shock loading (B) Vibration (C) Fatigue (D) Tension

Description : A material subjected __________ must have high resilience. (A) Shock loading (B) Vibration (C) Fatigue (D) Tension

Last Answer : (A) Shock loading

Out of the following, the most malleable material is (A) Copper (B) Aluminium (C) Wrought iron (D) Lead

Description : Out of the following, the most malleable material is (A) Copper (B) Aluminium (C) Wrought iron (D) Lead

Last Answer : (D) Lead

Oxyacetylene reducing flame is used while carrying out welding on (A) Alloy steel (B) Grey cast iron (C) Mild steel (D) High carbon steel

Description : Oxyacetylene reducing flame is used while carrying out welding on (A) Alloy steel (B) Grey cast iron (C) Mild steel (D) High carbon steel

Last Answer : (C) Mild steel

Oxyacetylene reducing flame is used while carrying out welding on (A) Alloy steel (B) Grey cast iron (C) Mild steel (D) High carbon steel

Description : Oxyacetylene reducing flame is used while carrying out welding on (A) Alloy steel (B) Grey cast iron (C) Mild steel (D) High carbon steel

Last Answer : Option C

__________ balls capable of grinding the feed in a ball mill gives the maximum efficiency. (A) Cast iron (B) Minimum size (C) Maximum size (D) Elliptical

Description : __________ balls capable of grinding the feed in a ball mill gives the maximum efficiency. (A) Cast iron (B) Minimum size (C) Maximum size (D) Elliptical

Last Answer : (B) Minimum size

Carbon is present in the form of __________ in grey cast iron. (A) Spheroids (B) Nodular aggregates of graphite (C) Flakes

Description : Carbon is present in the form of __________ in grey cast iron. (A) Spheroids (B) Nodular aggregates of graphite (C) Flakes

Last Answer : Option C

Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron. (A) Manganese (B) Phosphorous (C) Magnesium (D) Chromium

Description : Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron. (A) Manganese (B) Phosphorous (C) Magnesium (D) Chromium

Last Answer : Option C

Cast iron has very high (A) Compressive strength (B) Ductility (C) Shock resistance (D) Resistance to brittleness

Description : Cast iron has very high (A) Compressive strength (B) Ductility (C) Shock resistance (D) Resistance to brittleness

Last Answer : (A) Compressive strength

Based on temperature withstanding ability, classify insulating material.

Description : Based on temperature withstanding ability, classify insulating material. 

Last Answer : class Temperature withstanding ability in 0C Materials Y 90 Cotton, silk paper and similar organic materials neither impregnated nor immersed in any oil, rubber, PVC. A 105 ... rubber compounds C Above 180  Mica, ceramics, glass, Teflon, quartz, etc. 

Wrought iron is (A) High carbon iron (B) Highly resistance to acid corrosion (C) Malleable & ductile; and hence is used for chain links, hooks & couplings (D) An alloy of iron, chromium & carbon

Description : Wrought iron is (A) High carbon iron (B) Highly resistance to acid corrosion (C) Malleable & ductile; and hence is used for chain links, hooks & couplings (D) An alloy of iron, chromium & carbon

Last Answer : (C) Malleable & ductile; and hence is used for chain links, hooks & couplings

Very high sulphur in pig iron makes (A) Its casting unsound (B) Its hard and machinable (C) Its brittle and malleable (D) All (A), (B) & (C)

Description : Very high sulphur in pig iron makes (A) Its casting unsound (B) Its hard and machinable (C) Its brittle and malleable (D) All (A), (B) & (C)

Last Answer : (A) Its casting unsound

Increasing sulphur content in pig iron tends to make it (A) Soft (B) Hard (C) Tough (D) Ductile & malleable

Description : Increasing sulphur content in pig iron tends to make it (A) Soft (B) Hard (C) Tough (D) Ductile & malleable

Last Answer : Option B

The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron.

Description : The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron.

Last Answer : (C) Silver.

______is extensively used for those portions of magnetic circuit which carry steady flux and need superior mechanical properties ? (a) Grey cast-iron (b) Cast steel (c) High carbon steel (d) Stainless steel

Description : ______is extensively used for those portions of magnetic circuit which carry steady flux and need superior mechanical properties ? (a) Grey cast-iron (b) Cast steel (c) High carbon steel (d) Stainless steel

Last Answer : (b) Cast steel

According to the lesson what does Nelson Mandela mean by ―defies the imagination‖? (a) Men and women risking and giving their lives (b) Patriots withstanding so much oppression and brutality without being broken. (c) Both a and b

Description : According to the lesson what does Nelson Mandela mean by ―defies the imagination‖? (a) Men and women risking and giving their lives (b) Patriots withstanding so much oppression and brutality without being broken. (c) Both a and b

Last Answer : (b) Patriots withstanding so much oppression and brutality without being broken.

Chilled iron castings are (A) Easily machinable (B) Soft on surface(C) Highly wear resistant(D) None of these

Description : Chilled iron castings are (A) Easily machinable (B) Soft on surface (C) Highly wear resistant (D) None of these

Last Answer : (C) Highly wear resistant

Out of the following __________ iron has the best capability to bear sudden & excessive shocks. (A) White (B) Cast (C) Wrought (D) Pig

Description : Out of the following __________ iron has the best capability to bear sudden & excessive shocks. (A) White (B) Cast (C) Wrought (D) Pig

Last Answer : (C) Wrought

Pick out the wrong statement. (A) Cold cracking of a weld is due to the presence of hydrogen gas in the weld (B) True stress is given by, σ = σE (1 + εE), where σE and εE are engineering stress and engineering strain respectively (C) Phosphorous can be easily recovered in the iron blast furnace (D) High residual stress at the surface is beneficial for fatigue properties of a material

Description : Pick out the wrong statement. (A) Cold cracking of a weld is due to the presence of hydrogen gas in the weld (B) True stress is given by, σ = σE (1 + εE), where σE and εE ... in the iron blast furnace (D) High residual stress at the surface is beneficial for fatigue properties of a material

Last Answer : Option C

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%? (A) Cast iron (B) Steel (C) Nickel (D) Karbate

Description : Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%? (A) Cast iron (B) Steel (C) Nickel (D) Karbate

Last Answer : (C) Nickel

The presence of impurities in iron (A) Increases its melting point (B) Does not affect its melting point (C) Decreases its melting point (D) Makes it malleable

Description : The presence of impurities in iron (A) Increases its melting point (B) Does not affect its melting point (C) Decreases its melting point (D) Makes it malleable

Last Answer : (C) Decreases its melting point

Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough

Description : Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough

Last Answer : (C) Brittle

Motor controllers are seldom troubled by grounds because ________________. A. cabinet heaters always keep internal components dry B. special insulation is used on wire for vital circuits C. shock mounts on controller panels greatly reduce vibration D. contactors and relays are mounted on nonconducting panels

Description : Motor controllers are seldom troubled by grounds because ________________. A. cabinet heaters always keep internal components dry B. special insulation is used on wire for vital circuits C. ... on controller panels greatly reduce vibration D. contactors and relays are mounted on nonconducting panels

Last Answer : Answer: D

The advantages of electrometric bearings are a) Permits movement of the structure in all directions b) Serves as a shock absorber due to anti-vibration properties of elestomeric c) better dispersion of longitudinal forces to the approaches d) All of the above*

Description : The advantages of electrometric bearings are a) Permits movement of the structure in all directions b) Serves as a shock absorber due to anti-vibration properties of elestomeric c) better dispersion of longitudinal forces to the approaches d) All of the above*

Last Answer : d) All of the above*

Surface preparation for Metallising the abrasives used for final cleaning is a) Chilled iron grit G.24, as defined in BS : 2451 b) Washed salt free angular silica sand of mesh size 12 to 30 with a minimum of 40% retained on a 20 mesh c) either (a) or (b) * d) d) neither (a) or (b)

Description : Surface preparation for Metallising the abrasives used for final cleaning is a) Chilled iron grit G.24, as defined in BS : 2451 b) Washed salt free angular silica sand of mesh size 12 to 30 with a minimum of 40% retained on a 20 mesh c) either (a) or (b) * d) d) neither (a) or (b)

Last Answer : c) either (a) or (b) *

Mention the withstanding current in our human body.

Description : Mention the withstanding current in our human body.

Last Answer : 9mA

Steel pipe are (A) Suitable for withstanding high internal pressure (B) Connected by riveted or welded joints (C) Generally laid underground and no expansion joint is required (D) Likely to last 100 years under ordinary conditions

Description : Steel pipe are  (A) Suitable for withstanding high internal pressure  (B) Connected by riveted or welded joints  (C) Generally laid underground and no expansion joint is required  (D) Likely to last 100 years under ordinary conditions 

Last Answer : (D) Likely to last 100 years under ordinary conditions 

Pick out the wrong statement. (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure (B) Metal/alloys having body centred cubic (bcc) crystal lattice structure is stronger & less ductile than those having face centred cubic (fcc) crystal lattice structure (C) Tungsten has a body centred cubic (bcc) crystal lattice structure (D) Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure

Description : Pick out the wrong statement. (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure (B) Metal/alloys having body centred cubic ... D) Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure

Last Answer : (C) Tungsten has a body centred cubic (bcc) crystal lattice structure