Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

Question

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

A. Conductor

B. Insulator

C. Semi-conductor

D. None of these

Share this question with your friends

Show all Chemical Engineering Basics MCQ

Comment

Propulsion of rocket follows from the

A. Newton's second law of motion

B. Newton's third law of motion

C. Law of projectiles

D. Archimedes principle

Discuss this answer

Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

A. 10

B. 20

C. 30

D. 40

Discuss this answer

Superheating of steam is done at constant

A. Enthalpy

B. Entropy

C. Pressure

D. Volume

Discuss this answer

A material being tested for endurance strength is subjected to the __________ load.

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

Discuss this answer

At the point of boundary layer separation in fluid flow, the

A. Shear stress is maximum

B. Velocity gradient is flat

C. Density variation is maximum

D. Shear stress is zero

Discuss this answer

Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v²)] (V - b) = RT, depends upon its

A. Pressure & temperature

B. Pressure & specific volume

C. Temperature & specific volume

D. Temperature only

Discuss this answer

In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.

A. μ , α and θ all have units of m/s

B. μ , α and θ all have units of m2/s

C. α and θ have units of m2/s, while μ has unit of m/s

D. α and θ have units of m/s, while μ has unit of m2/s

Discuss this answer

An abrupt and sudden fall in the reading of barometer is an indication of the

A. Storm

B. Rain

C. Clear weather

D. Cold wave

Discuss this answer

Specific __________ is a dimensionless quantity.

A. Heat

B. Humidity

C. Weight

D. None of these

Discuss this answer

Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost

A. Only

B. Plus variable cost

C. Plus overhead cost

D. Plus selling expenses

Discuss this answer

Percentage of argon (by volume) in dry atmospheric air is about

A. 0.09

B. 0.3

C. 0.57

D. 0.94

Discuss this answer

Case hardening of a material is

A. Followed by tempering or carburising

B. Preceded by its tempering

C. Done to get a soft ductile interior with a very hard surface

D. Carried out to get extreme hardness in its core

Discuss this answer

Hot extrusion of aluminium is done in the temperature range of __________ °C.

A. 550-600

B. 450-500

C. 350-400

D. 250-300

Discuss this answer

Which of the following has the least value of ultimate tensile strength (UTS)?

A. Medium carbon steel

B. High carbon steel

C. Cast iron

D. Wrought iron

Discuss this answer

A material subjected __________ must have high resilience.

A. Shock loading

B. Vibration

C. Fatigue

D. Tension

Discuss this answer

Thermal conductivity of a material does not depend upon its

A. Mass

B. Volume

C. Surface area

D. All 'a', 'b' & 'c'

Discuss this answer

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

A. Cementite

B. Austenite

C. Martensite

D. Pearlite

Discuss this answer

Recrystallisation temperature of steel is __________ °C.

A. 50

B. 300

C. 500

D. 800

Discuss this answer

Cupola produces __________ iron.

A. Pig

B. Cast

C. Wrought

D. Carbon free

Discuss this answer

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

A. Casting

B. Pattern

C. Draft

D. Distortion

Discuss this answer

Which of the following fastening devices has a head at one end and a nut fitted to the other?

A. Bolt

B. Stud

C. Top bolt

D. None of these

Discuss this answer

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

A. T

B. 1/T

C. T²

D. 1/T²

Discuss this answer

Normalising of a casting does not

A. Induce stresses in it

B. Refine its grain structure

C. Reduce segregation

D. Improve its mechanical properties

Discuss this answer

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

A. More

B. Less

C. Equal

D. Much more

Discuss this answer

The refractory lining of the bottom in a basic electric arc furnace is made of

A. Silica

B. Alumina

C. Magnesia

D. Fireclay

Discuss this answer

Which one is neutral in character?

A. N₂O₄

B. N₂O

C. N₂O₅

D. N₂O₃

Discuss this answer

Dislocations are __________ defects.

A. Point

B. Line

C. Volume

D. None of these

Discuss this answer

Dowtherm is a

A. High temperature heating medium (a petroleum product)

B. Product of coal tar distillation

C. Very heat sensitive material

D. None of these

Discuss this answer

A dummy activity is used in PERT network to describe the

A. Precedence relationship

B. Resource idleness

C. Resource restriction

D. Necessary time delay

Discuss this answer

The product of a commercial direct reduction process is

A. Liquid iron

B. Solid iron

C. Sponge iron

D. Iron saturated with carbon

Discuss this answer

Accepted Answer

C. Semi-conductor

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Propulsion of rocket follows from the

Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

Superheating of steam is done at constant

A material being tested for endurance strength is subjected to the __________ load.

At the point of boundary layer separation in fluid flow, the

Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v²)] (V - b) = RT, depends upon its

In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.

An abrupt and sudden fall in the reading of barometer is an indication of the

Specific __________ is a dimensionless quantity.

Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost

Percentage of argon (by volume) in dry atmospheric air is about

Case hardening of a material is

Hot extrusion of aluminium is done in the temperature range of __________ °C.

Which of the following has the least value of ultimate tensile strength (UTS)?

A material subjected __________ must have high resilience.

Thermal conductivity of a material does not depend upon its

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Recrystallisation temperature of steel is __________ °C.

Cupola produces __________ iron.

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

Which of the following fastening devices has a head at one end and a nut fitted to the other?

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

Normalising of a casting does not

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

The refractory lining of the bottom in a basic electric arc furnace is made of

Which one is neutral in character?

Dislocations are __________ defects.

Dowtherm is a

A dummy activity is used in PERT network to describe the

The product of a commercial direct reduction process is

Also checkout

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Propulsion of rocket follows from the

Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

Superheating of steam is done at constant

A material being tested for endurance strength is subjected to the __________ load.

At the point of boundary layer separation in fluid flow, the

Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v2)] (V - b) = RT, depends upon its

In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.

An abrupt and sudden fall in the reading of barometer is an indication of the

Specific __________ is a dimensionless quantity.

Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost

Percentage of argon (by volume) in dry atmospheric air is about

Case hardening of a material is

Hot extrusion of aluminium is done in the temperature range of __________ °C.

Which of the following has the least value of ultimate tensile strength (UTS)?

A material subjected __________ must have high resilience.

Thermal conductivity of a material does not depend upon its

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Recrystallisation temperature of steel is __________ °C.

Cupola produces __________ iron.

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

Which of the following fastening devices has a head at one end and a nut fitted to the other?

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

Normalising of a casting does not

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

The refractory lining of the bottom in a basic electric arc furnace is made of

Which one is neutral in character?

Dislocations are __________ defects.

Dowtherm is a

A dummy activity is used in PERT network to describe the

The product of a commercial direct reduction process is

Also checkout

Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v²)] (V - b) = RT, depends upon its