Directions: It consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes given below:Statement (I):Soft magnetic materials are not used in the construction of permanent magnets.Statement (II):Soft magnetic materials have narrow hysteresis loop, low retentivity and low coercivity

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Statement (I) is true but Statement (II) is false

Statement (I) is false but Statement (II) is true

A plane in a unit cell is described by its miller indices a (632). The plane intersects x, y and z respectively at a point whose distances from origin are

\(\frac{{2}}{{3}}, \frac{{1}}{{3}} ~and~ 1\)units

\(\frac{{1}}{{6}}, \frac{{1}}{{3}}~and~\frac{{1}}{{2}}\) units

\(\frac{{2}}{{3}}, \frac{{1}}{{3}} ~and~ 1\)units

\(\frac{{1}}{{2}}, ~1 ~and~ \frac{{2}}{{3}}\)units

Duplex process of steel making is a combination of

acid bessemer and acid open hearth processes

basic bessemer and acid open hearth processes

acid bessemer and basic open hearth processes

acid bessemer and acid open hearth processes

basic bessemer and basic open hearth processes

A constitutional diagram shows relationship among which of the following combinations in particular alloy system?

Temperature, composition and phases present.

Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): Physical properties of composite materials are generally isotropic.Statement (II): The stiffness of composite panel will often depend upon the orientation of the applied forces and / or moments.

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Statement (I) is true but Statement (II) is false

Statement (I) is false but Statement (II) is true

Eutectoid reaction occurring at 727°C with 0.77% C is

austenite → martensite + bainite

austenite → ferrite + pearlite

austenite → ferrite + mertensite

austenite → ferrite + cementite

austenite → martensite + bainite

Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): The tie line is constructed across the two-phase region at the temperature of the alloy.Statement (ll): The overall alloy composition is located on the tie line.

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Statement (I) is true but Statement (II) is false

Statement (I) is false but Statement (II) is true

In Eutectoid reaction a solid phase transforms into two other solid phases upon cooling. Which one of the following is correct in the case of Eutectoid reaction occurring in Iron-Carbon phase diagram?

Ferrite converts to Cementite and Martensite

Austenite converts to Ferrite and Cementite

Ferrite converts to Cementite and Martensite

Cementite converts to Austenite and Ferrite

Martensite converts to Ferrite and Cementite

In the context of properties of steel, which of the following statements is highly relevant?

Presence of sulphide improves corrosion resistance.

Presence of manganese decreases strength.

Presence of carbon does not influence the heat-treatment process.

Presence of carbon contents imparts strength to iron.

Presence of sulphide improves corrosion resistance.

Addition of Vanadium to steel results in the improvement of

Resistance to oxidation at elevated temperature

Plain carbon steel contains:

Maximum carbon content up to 0.005%

Maximum carbon content up to 2.5%

Maximum carbon content up to 0.5%

Maximum carbon content up to 1.5%

Maximum carbon content up to 0.005%

Curie law of paramagnetism (with χ = susceptibility, B = flux density and C = a constant) is

\(\chi = \frac{{C{T^2}}}{{2B}}\)

Ductility of a material can be defined as:

Ability to undergo large permanent deformations in compression

Ability to recover its original form

Ability to undergo large permanent deformations in tension

Match List-I with List-II and select the correct answer :List – I (Process)List-II (Property)P) Cold Rolling1) IndentationQ) Hardness2) DuctilityR) Impact loads3) MalleabilityS) Wire drawing4) Resilience

P → 1, Q → 3, R → 4, S → 2

P → 4, Q → 2, R → 3, S → 1

P → 3, Q → 1, R → 4, S → 2

P → 1, Q → 3, R → 4, S → 2

P → 3, Q → 1, R → 2, S → 4

Match the following related to the type of steel and its product;A. Mild steel1. HammersB. Tool steel2. Crane hooksC. Medium carbon steel3. Milling cuttersD. High carbon steel4. Commercial beams

A – 3, B – 4, C – 1, D - 2

A – 4, B – 1, C – 2, D - 3

A – 3, B – 2, C – 4, D - 1

A – 4, B – 3, C – 1, D - 2

Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): Metal carbides and carbon are used as refractories as they resist oxidation.Statement (II): Metal carbides and carbon are not particularly suitable for high-temperature applications.

Statement (I) is false, but Statement (II) is true

Both Statement (I) and Statement (II) individually true and Statement (II) is the correct explanation of Statement (I)

Both statement (I) and Statement (II) are individually true, but Statement (II) is not the correct explanation of Statement (I)

Statement (I) is true, but Statement (II) is false

Statement (I) is false, but Statement (II) is true

Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): Metals having same crystal structure will have greater solubility.Statement (II): Differences in crystal structure limits the solid solubility.

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Statement (I) is true but Statement (II) is false

Statement (I) is false but Statement (II) is true

283 + Mcqs in Structure And Properties Of Engineering Materials in Mechanical Engineering Page 3 McqOptions

101.	Directions: It consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes given below:Statement (I):Soft magnetic materials are not used in the construction of permanent magnets.Statement (II):Soft magnetic materials have narrow hysteresis loop, low retentivity and low coercivity
A.	Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
B.	Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
C.	Statement (I) is true but Statement (II) is false
D.	Statement (I) is false but Statement (II) is true
Answer» B. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Discussion

102.	A plane in a unit cell is described by its miller indices a (632). The plane intersects x, y and z respectively at a point whose distances from origin are
A.	6, 3 and 2 units
B.	\(\frac{{1}}{{6}}, \frac{{1}}{{3}}~and~\frac{{1}}{{2}}\) units
C.	\(\frac{{2}}{{3}}, \frac{{1}}{{3}} ~and~ 1\)units
D.	\(\frac{{1}}{{2}}, ~1 ~and~ \frac{{2}}{{3}}\)units
Answer» C. \(\frac{{2}}{{3}}, \frac{{1}}{{3}} ~and~ 1\)units

Discussion

103.	Pearlite microstructure in an eutectoid steel consists of alternating layers of two phases, namely α ferrite and
A.	Martensite
B.	Austenite
C.	Cementite
D.	Bainite
Answer» D. Bainite

Discussion

104.	Duplex process of steel making is a combination of
A.	basic bessemer and acid open hearth processes
B.	acid bessemer and basic open hearth processes
C.	acid bessemer and acid open hearth processes
D.	basic bessemer and basic open hearth processes
Answer» C. acid bessemer and acid open hearth processes

Discussion

105.	Malleable cast iron is produced1. By quick cooling of cast iron.2. By adding magnesium to molten cast iron.3. from white cost iron by annealing.Which of the above statements is/are correct?
A.	1 only
B.	2 only
C.	3 only
D.	1, 2 and 3
Answer» D. 1, 2 and 3

Discussion

106.	A constitutional diagram shows relationship among which of the following combinations in particular alloy system?
A.	Temperature and composition
B.	Temperature and phases present
C.	Temperature, composition and phases present.
D.	Temperature and pressure
Answer» D. Temperature and pressure

Discussion

107.	Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): Physical properties of composite materials are generally isotropic.Statement (II): The stiffness of composite panel will often depend upon the orientation of the applied forces and / or moments.
A.	Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
B.	Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
C.	Statement (I) is true but Statement (II) is false
D.	Statement (I) is false but Statement (II) is true
Answer» E.

Discussion

108.	Consider the following statements:A characteristic of the structure of metallic atoms is that1. their outermost orbital of electrons is nearly complete and they attract electrons from other atoms2. their atoms are smaller and more compact than those of non-metallic elementsWhich of the above statements is/are correct?
A.	1 only
B.	2 only
C.	Both 1 and 2
D.	Neither 1 and 2
Answer» E.

Discussion

109.	Eutectoid reaction occurring at 727°C with 0.77% C is
A.	austenite → ferrite + pearlite
B.	austenite → ferrite + mertensite
C.	austenite → ferrite + cementite
D.	austenite → martensite + bainite
Answer» D. austenite → martensite + bainite

Discussion

110.	Carbon content of mild steel can be
A.	0.15%
B.	0.51%
C.	0.87%
D.	1.8%
Answer» B. 0.51%

Discussion

111.	A combination of two or more materials to form a new material with enhanced material properties is known as-
A.	Reinforcement
B.	Matrix
C.	Composite
D.	Polymer
Answer» D. Polymer

Discussion

112.	Atomic packing factor for a FCC structure is:
A.	0.52
B.	0.74
C.	0.68
D.	0.9
Answer» C. 0.68

Discussion

113.	______ is also called spheroidal graphite cast iron.
A.	Malleable cast iron
B.	Ductile cast iron
C.	White cast iron
D.	Gray cast iron
Answer» C. White cast iron

Discussion

114.	Following are the light transmission mediums:(i) Glass(ii) GaAs(iii) Diamond(iv) WaterArrange their refractive index in descending order. The correct sequence is given by
A.	(iv), (ii), (i), (iii)
B.	(ii), (i), (iii), (iv)
C.	(i), (ii), (iv), (iii)
D.	(iii), (ii), (i), (iv)
Answer» E.

Discussion

115.	In steel, main alloy causing corrosion resistance is _____.
A.	Manganese
B.	Vanadium
C.	Chromium
D.	Cobalt
Answer» D. Cobalt

Discussion

116.	Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): The tie line is constructed across the two-phase region at the temperature of the alloy.Statement (ll): The overall alloy composition is located on the tie line.
A.	Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
B.	Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
C.	Statement (I) is true but Statement (II) is false
D.	Statement (I) is false but Statement (II) is true
Answer» B. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Discussion

117.	High speed steel belongs to the category of _________ steel.
A.	Alloy
B.	Stainless
C.	Low carbon
D.	High carbon
Answer» B. Stainless

Discussion

118.	______ is not a ceramic material
A.	Glass
B.	Bakelite
C.	Clay
D.	Aluminium oxide
Answer» C. Clay

Discussion

119.	In Eutectoid reaction a solid phase transforms into two other solid phases upon cooling. Which one of the following is correct in the case of Eutectoid reaction occurring in Iron-Carbon phase diagram?
A.	Austenite converts to Ferrite and Cementite
B.	Ferrite converts to Cementite and Martensite
C.	Cementite converts to Austenite and Ferrite
D.	Martensite converts to Ferrite and Cementite
Answer» B. Ferrite converts to Cementite and Martensite

Discussion

120.	________ has maximum malleability.
A.	Aluminium
B.	Copper
C.	Lead
D.	Wrought iron
Answer» D. Wrought iron

Discussion

121.	A carbon steel contains 1% carbon. It is to be converted to 0.5% carbon. Amount of iron to be added to 10 kg of this steel is:
A.	15 kg
B.	10 kg
C.	5 kg
D.	20 kg
Answer» C. 5 kg

Discussion

122.	In a variable type carbon resistor the carbon track is formed of a mixture of carbon, resin and
A.	Clay
B.	Manganese
C.	Nickel
D.	Cadmium
Answer» B. Manganese

Discussion

123.	Gun metal contains 2 percent of-
A.	Copper
B.	Tin
C.	Nickel
D.	Zinc
Answer» E.

Discussion

124.	An intrinsic semiconductor has equal number of electrons and holes in it. This is due to
A.	doping
B.	free electrons
C.	thermal energy
D.	valence electrons
Answer» D. valence electrons

Discussion

125.	Consider the following statements in connection with thermoplastics:1. They are long-chain molecules held together by van der Waals' forces.2. They cannot be resoftened once they have set and hardened.3. They are highly plastic and are easy for shaping.4. Some commercial thermo-plastics are polyethylene, polystyrene and PVC.Which of the above statements are correct?
A.	1, 2 and 3 only
B.	1, 3 and 4 only
C.	2, 3 and 4 only
D.	1, 2, 3 and 4
Answer» C. 2, 3 and 4 only

Discussion

126.	Manganese in steel increases its:
A.	Tensile strength
B.	Hardness
C.	Ductility
D.	Fluidity
Answer» B. Hardness

Discussion

127.	Consider the following methods in nanoparticle synthesis:1. Bottom-up2. Top-down3. Side-by-sideWhich of these methods is/are slow and does/do not conduce to large-scale production?
A.	1 only
B.	2 only
C.	3 only
D.	1, 2 and 3
Answer» C. 3 only

Discussion

128.	In the context of properties of steel, which of the following statements is highly relevant?
A.	Presence of manganese decreases strength.
B.	Presence of carbon does not influence the heat-treatment process.
C.	Presence of carbon contents imparts strength to iron.
D.	Presence of sulphide improves corrosion resistance.
Answer» D. Presence of sulphide improves corrosion resistance.

Discussion

129.	A crystal found with atomic packing factor 0.68. It must be:
A.	FCC
B.	SC
C.	BCC
D.	HCP
Answer» D. HCP

Discussion

130.	Addition of Vanadium to steel results in the improvement of
A.	Hardenability
B.	Fatigue Strength
C.	Heat treatability by quenching
D.	Resistance to oxidation at elevated temperature
Answer» C. Heat treatability by quenching

Discussion

131.	Consider the following sources:1. A permanent magnet2. A charged disc rotating at uniform speed3. An accelerated charge4. An electric field which changes linearly with timeWhich of the above sources are the sources of steady magnetic field?
A.	1, 2 and 3 only
B.	3 and 4 only
C.	1, 2 and 4 only
D.	1, 2, 3 and 4
Answer» D. 1, 2, 3 and 4

Discussion

132.	Match List I with List-II and select the correct answer using the code given below the lists:List IList IIA. Ferrite1. Meissner effectB. Superconductor2. Faraday effectC. Quartz3. HysteresisD. Iron4. Piezoetectricity
A.	A - 3, B -1, C - 4, D - 2
B.	A - 2, B - 1, C - 4, D - 3
C.	A - 3, B - 4, C - 1, D - 2
D.	A - 2, B - 4, C - 1, D - 3
Answer» C. A - 3, B - 4, C - 1, D - 2

Discussion

133.	If atom is assumed to a hard sphere, then the value of highest APF (Atomic Packing factor) in metals will be:
A.	0.65
B.	0.74
C.	0.98
D.	0.84
Answer» C. 0.98

Discussion

134.	Plain carbon steel contains:
A.	Maximum carbon content up to 2.5%
B.	Maximum carbon content up to 0.5%
C.	Maximum carbon content up to 1.5%
D.	Maximum carbon content up to 0.005%
Answer» D. Maximum carbon content up to 0.005%

Discussion

135.	Curie law of paramagnetism (with χ = susceptibility, B = flux density and C = a constant) is
A.	χ = CT
B.	\(\chi = \frac{{CB}}{T}\)
C.	\(\chi = \frac{{C{T^2}}}{{2B}}\)
D.	\(\chi = \frac{C}{T}\)
Answer» E.

Discussion

136.	A compound of iron and carbon, called iron carbide, is also known as:
A.	martensite
B.	bainite
C.	ferrite
D.	cementite
Answer» E.

Discussion

137.	Fluorspar is mainly composed of-
A.	Calcium fluoride
B.	Calcium sulphate
C.	Calcium phosphate
D.	Calcium nitrate
Answer» B. Calcium sulphate

Discussion

138.	Ductility of a material can be defined as:
A.	Ability to undergo large permanent deformations in compression
B.	Ability to recover its original form
C.	Ability to undergo large permanent deformations in tension
D.	All of the above
Answer» D. All of the above

Discussion

139.	Match List-I with List-II and select the correct answer :List – I (Process)List-II (Property)P) Cold Rolling1) IndentationQ) Hardness2) DuctilityR) Impact loads3) MalleabilityS) Wire drawing4) Resilience
A.	P → 4, Q → 2, R → 3, S → 1
B.	P → 3, Q → 1, R → 4, S → 2
C.	P → 1, Q → 3, R → 4, S → 2
D.	P → 3, Q → 1, R → 2, S → 4
Answer» C. P → 1, Q → 3, R → 4, S → 2

Discussion

140.	Match the following related to the type of steel and its product;A. Mild steel1. HammersB. Tool steel2. Crane hooksC. Medium carbon steel3. Milling cuttersD. High carbon steel4. Commercial beams
A.	A – 3, B – 4, C – 1, D - 2
B.	A – 4, B – 1, C – 2, D - 3
C.	A – 3, B – 2, C – 4, D - 1
D.	A – 4, B – 3, C – 1, D - 2
Answer» E.

Discussion

141.	An alloy of copper, tin and zinc is known as
A.	Brass
B.	Bronze
C.	Gun metal
D.	Babbit metal
Answer» D. Babbit metal

Discussion

142.	In a stable ceramic crystal structure, a cation is surrounded by three anions in the form of a planar equilateral triangle. The ratio of the cation-anion radius for the crystal is nearly
A.	0.16
B.	0.24
C.	0.32
D.	0.41
Answer» B. 0.24

Discussion

143.	One of the following does not represent a valid combination of ‘Class’ of insulating material and its limiting temperature in 'Degree Centigrade'.
A.	‘Class- A’ – 105°C
B.	‘Class- F’ – 155°C
C.	‘Class- H’ – 180°C
D.	‘Class- B’ – 120°C
Answer» E.

Discussion

144.	Copper has FCC structure, it's atomic radius is 1.28 A° and atomic mass is 63.5. The density of copper will be.
A.	8.9 × 103 kg/mm3
B.	8.9 × 103 kg/cm3
C.	8.9 × 103 kg/m3
D.	8.9 × 103 g/mm3
Answer» D. 8.9 × 103 g/mm3

Discussion

145.	Breakdown is permanent in:
A.	solids
B.	gases
C.	vapours
D.	liquids
Answer» B. gases

Discussion

146.	Consider the following assumptions made while developing the ionic packing theory:1. Cations and anions are spherical but these spheres are not hard2. Cations are always smaller than anions3. Each cation would tend to be surrounded by the maximum number of anions permitted by the geometry4. Cations and anions do not touch each other Which of the above assumptions are correct?
A.	1 and 3
B.	1 and 4
C.	2 and 4
D.	2 and 3
Answer» E.

Discussion

147.	Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): Metal carbides and carbon are used as refractories as they resist oxidation.Statement (II): Metal carbides and carbon are not particularly suitable for high-temperature applications.
A.	Both Statement (I) and Statement (II) individually true and Statement (II) is the correct explanation of Statement (I)
B.	Both statement (I) and Statement (II) are individually true, but Statement (II) is not the correct explanation of Statement (I)
C.	Statement (I) is true, but Statement (II) is false
D.	Statement (I) is false, but Statement (II) is true
Answer» D. Statement (I) is false, but Statement (II) is true

Discussion

148.	A line joining σy (yield strength) on mean stress axis and σe (endurance limit) on stress amplitude axis is called as:
A.	Soderberg line
B.	Gerber line
C.	Langer line
D.	Goodman line
Answer» B. Gerber line

Discussion

149.	Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:Statement (I): Metals having same crystal structure will have greater solubility.Statement (II): Differences in crystal structure limits the solid solubility.
A.	Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
B.	Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
C.	Statement (I) is true but Statement (II) is false
D.	Statement (I) is false but Statement (II) is true
Answer» B. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

Discussion

150.	18-4-1 High speed steel contains-
A.	4% carbon
B.	5% vanadium
C.	4% chromium
D.	0.7% tungsten
Answer» D. 0.7% tungsten

Discussion

Explore topic-wise MCQs in Mechanical Engineering.

A plane in a unit cell is described by its miller indices a (632). The plane intersects x, y and z respectively at a point whose distances from origin are

Pearlite microstructure in an eutectoid steel consists of alternating layers of two phases, namely α ferrite and

Duplex process of steel making is a combination of

Malleable cast iron is produced1. By quick cooling of cast iron.2. By adding magnesium to molten cast iron.3. from white cost iron by annealing.Which of the above statements is/are correct?

A constitutional diagram shows relationship among which of the following combinations in particular alloy system?

Eutectoid reaction occurring at 727°C with 0.77% C is

Carbon content of mild steel can be

A combination of two or more materials to form a new material with enhanced material properties is known as-

Atomic packing factor for a FCC structure is:

______ is also called spheroidal graphite cast iron.

Following are the light transmission mediums:(i) Glass(ii) GaAs(iii) Diamond(iv) WaterArrange their refractive index in descending order. The correct sequence is given by

In steel, main alloy causing corrosion resistance is _____.

High speed steel belongs to the category of _________ steel.

______ is not a ceramic material

In Eutectoid reaction a solid phase transforms into two other solid phases upon cooling. Which one of the following is correct in the case of Eutectoid reaction occurring in Iron-Carbon phase diagram?

________ has maximum malleability.

A carbon steel contains 1% carbon. It is to be converted to 0.5% carbon. Amount of iron to be added to 10 kg of this steel is:

In a variable type carbon resistor the carbon track is formed of a mixture of carbon, resin and

Gun metal contains 2 percent of-

An intrinsic semiconductor has equal number of electrons and holes in it. This is due to

Manganese in steel increases its:

Consider the following methods in nanoparticle synthesis:1. Bottom-up2. Top-down3. Side-by-sideWhich of these methods is/are slow and does/do not conduce to large-scale production?

In the context of properties of steel, which of the following statements is highly relevant?

A crystal found with atomic packing factor 0.68. It must be:

Addition of Vanadium to steel results in the improvement of

Consider the following sources:1. A permanent magnet2. A charged disc rotating at uniform speed3. An accelerated charge4. An electric field which changes linearly with timeWhich of the above sources are the sources of steady magnetic field?

Match List I with List-II and select the correct answer using the code given below the lists:List IList IIA. Ferrite1. Meissner effectB. Superconductor2. Faraday effectC. Quartz3. HysteresisD. Iron4. Piezoetectricity

If atom is assumed to a hard sphere, then the value of highest APF (Atomic Packing factor) in metals will be:

Plain carbon steel contains:

Curie law of paramagnetism (with χ = susceptibility, B = flux density and C = a constant) is

A compound of iron and carbon, called iron carbide, is also known as:

Fluorspar is mainly composed of-

Ductility of a material can be defined as:

Match List-I with List-II and select the correct answer :List – I (Process)List-II (Property)P) Cold Rolling1) IndentationQ) Hardness2) DuctilityR) Impact loads3) MalleabilityS) Wire drawing4) Resilience

Match the following related to the type of steel and its product;A. Mild steel1. HammersB. Tool steel2. Crane hooksC. Medium carbon steel3. Milling cuttersD. High carbon steel4. Commercial beams

An alloy of copper, tin and zinc is known as

In a stable ceramic crystal structure, a cation is surrounded by three anions in the form of a planar equilateral triangle. The ratio of the cation-anion radius for the crystal is nearly

One of the following does not represent a valid combination of ‘Class’ of insulating material and its limiting temperature in 'Degree Centigrade'.

Copper has FCC structure, it's atomic radius is 1.28 A° and atomic mass is 63.5. The density of copper will be.

Breakdown is permanent in:

A line joining σy (yield strength) on mean stress axis and σe (endurance limit) on stress amplitude axis is called as:

18-4-1 High speed steel contains-