What Do You Meant By Expansion Joint?

What Do You Meant By Expansion Joint?
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1 Answer

Answer :

This joint is used to carry the piping system at high pressure. This joint is provided with gland and stuffing box which make the joint perfectly steam tight. To prevent leakage asbestos packing is provided.
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Related questions

What are the functions of different components of a typical expansion joint?

Description : What are the functions of different components of a typical expansion joint?

Last Answer : In a typical expansion joint, it normally contains the following components: joint sealant, joint filler, dowel bar, PVC dowel sleeve, bond breaker tape and cradle bent. Joint sealant: it seals the ... the joint . Cradle bar: It helps to uphold the dowel bar in position during construction.

Most commonly used joint in the underground pipe lines is the (A) Sleeve joint (B) Coupling (C) Flange (D) Expansion joint

Description : Most commonly used joint in the underground pipe lines is the (A) Sleeve joint (B) Coupling (C) Flange (D) Expansion joint

Last Answer : (A) Sleeve joint

Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Description : Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion ... due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline

Last Answer : (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings

In pumping stations, the type of joint generally used, is (A) Socket and spigot joint (B) Flanged joint (C) Expansion joint (D) Dresser coupling joint

Description : In pumping stations, the type of joint generally used, is (A) Socket and spigot joint (B) Flanged joint (C) Expansion joint (D) Dresser coupling joint

Last Answer : (B) Flanged joint

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 

__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. (A) Collar (B) Flanged (C) Bell and Spigot (D) Expansion

Description : __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. (A) Collar (B) Flanged (C) Bell and Spigot (D) Expansion

Last Answer : Option B

Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint. (A) Flanged iron (B) Collar (C) Flexible (D) Expansion

Description : Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint. (A) Flanged iron (B) Collar (C) Flexible (D) Expansion

Last Answer : Option B

To prevent compressive stresses in a rigid concrete pavement, the joint provided, is (A) Expansion joint (B) Contraction joint (C) Hinged joint (D) All the above

Description : To prevent compressive stresses in a rigid concrete pavement, the joint provided, is (A) Expansion joint (B) Contraction joint (C) Hinged joint (D) All the above

Last Answer : Answer: Option D

The maximum thickness of expansion joint in rigid pavements is (A) 0 (B) 25 mm (C) 50 mm (D) 100 mm

Description : The maximum thickness of expansion joint in rigid pavements is (A) 0 (B) 25 mm (C) 50 mm (D) 100 mm

Last Answer : Answer: Option B

The function of an expansion joint in rigid pavements is to (A) Relieve warping stresses (B) Relieve shrinkage stresses (C) Resist stresses due to expansion (D) Allow free expansion

Description : The function of an expansion joint in rigid pavements is to (A) Relieve warping stresses (B) Relieve shrinkage stresses (C) Resist stresses due to expansion (D) Allow free expansion

Last Answer : Answer: Option D

The surface where two successive placements of concrete meet, is known as (A) Contraction joint (B) Expansion joint (C) Construction joint (D) Both (a) and (b)

Description : The surface where two successive placements of concrete meet, is known as (A) Contraction joint (B) Expansion joint (C) Construction joint (D) Both (a) and (b)

Last Answer : Answer: Option C

The nominal thickness of an expansion joint in brick walls, is kept more than (A) 5 mm (B) 10 mm (C) 15 mm (D) 20 mm

Description : The nominal thickness of an expansion joint in brick walls, is kept more than (A) 5 mm (B) 10 mm (C) 15 mm (D) 20 mm

Last Answer : Answer: Option D

When an expansion is joint needed on the shell side of a shell and tube heat exchanger?

Description : When an expansion is joint needed on the shell side of a shell and tube heat exchanger?

Last Answer : A fixed tube sheet exchanger does not have provision for expansion of the tubing when there is a difference in metal temperature between the shell and tubing. When this temperature difference ... unsupported tube span. This is normally twice the baffle spacing. Source: Gulley Computer Associates

Draw a neat and labelled sketches of following: i) Plan of column formwork. ii) Expansion joint with load transfer device.

Description : Draw a neat and labelled sketches of following: i) Plan of column formwork. ii) Expansion joint with load transfer device.

Last Answer : i) Plan of column formwork. ii) Expansion joint with load transfer device.

During adiabatic expansion of gas (A) Pressure remains constant (B) Pressure is increased (C) Temperature remains constant (D) None of these

Description : During adiabatic expansion of gas (A) Pressure remains constant (B) Pressure is increased (C) Temperature remains constant (D) None of these

Last Answer : (D) None of these

In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition

Description : In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition

Last Answer : (A) Isothermal expansion

It is used for gas turbines which operates on an open cycle where both the compression and expansion processes take place in rotating machinery.  a. Dual Cycle  b. Otto Cycle  c. Carnot Cycle  d. Brayton Cycle

Description : It is used for gas turbines which operates on an open cycle where both the compression and expansion processes take place in rotating machinery.  a. Dual Cycle  b. Otto Cycle  c. Carnot Cycle  d. Brayton Cycle

Last Answer : Brayton Cycle

Which of the following engines is the most efficient?  a. Isobaric expansion  b. Adiabatic compression  c. Adiabatic expansion  d. Isothermal expansion

Description : Which of the following engines is the most efficient?  a. Isobaric expansion  b. Adiabatic compression  c. Adiabatic expansion  d. Isothermal expansion

Last Answer : Isobaric expansion

Which of the following relations is not applicable in a free expansion process?  a. Heat is rejected to zero  b. Work done is zero  c. Change in temperature is zero  d. Heat supplied is zero

Description : Which of the following relations is not applicable in a free expansion process?  a. Heat is rejected to zero  b. Work done is zero  c. Change in temperature is zero  d. Heat supplied is zero

Last Answer : Change in temperature is zero

When the expansion of compression of gas takes place without transfer of heat to or from the gas the process is called  a. reversible  b. adiabatic  c. polytropic  d. isothermal

Description : When the expansion of compression of gas takes place without transfer of heat to or from the gas the process is called  a. reversible  b. adiabatic  c. polytropic  d. isothermal

Last Answer : adiabatic

When the expansion of compression of gas takes place without transfer of heat or from the gas the process is called;  a. Isometric process  b. Isothermal process  c. Isobaric process  d. Adiabatic process

Description : When the expansion of compression of gas takes place without transfer of heat or from the gas the process is called;  a. Isometric process  b. Isothermal process  c. Isobaric process  d. Adiabatic process

Last Answer : Adiabatic process

An ideal gas of volume 1liter and pressure 10 bar undergoes a quasistatic adiabatic expansion until the pressure drops to 1 bar. Assume γ to be 1.4 what is the final volume?  a. 3.18 l  b. 4.18 l  c. 5.18 l  d. 6.18 l

Description : An ideal gas of volume 1liter and pressure 10 bar undergoes a quasistatic adiabatic expansion until the pressure drops to 1 bar. Assume γ to be 1.4 what is the final volume?  a. 3.18 l  b. 4.18 l  c. 5.18 l  d. 6.18 l

Last Answer : 5.18 l

When an object undergoes thermal expansion,  a. any holes in the object expand as well  b. any holes in the object remain the same  c. mass increases  d. molecular activities would cease

Description : When an object undergoes thermal expansion,  a. any holes in the object expand as well  b. any holes in the object remain the same  c. mass increases  d. molecular activities would cease

Last Answer : any holes in the object expand as well

For most solids, the coefficient of volume expansion is _________ the coefficient of linear expansion.  a. unrelated to  b. proportional to  c. twice  d. three times

Description : For most solids, the coefficient of volume expansion is _________ the coefficient of linear expansion.  a. unrelated to  b. proportional to  c. twice  d. three times

Last Answer : three times

A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place.  a. elongation  b. thermal stress  c. expansion contraction  d. thermal expansion

Description : A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place.  a. elongation  b. thermal stress  c. expansion contraction  d. thermal expansion

Last Answer : thermal stress

The change in physical size of a substance when its temperature changes.  a. intensive property  b. extensive property  c. volume expansion  d. thermal expansion

Description : The change in physical size of a substance when its temperature changes.  a. intensive property  b. extensive property  c. volume expansion  d. thermal expansion

Last Answer : thermal expansion

The amount of heat energy per kilogram that must be added or removed when a substance changes from one phase to another.  a. specific heat  b. heat of expansion  c. latent heat  d. useful heat

Description : The amount of heat energy per kilogram that must be added or removed when a substance changes from one phase to another.  a. specific heat  b. heat of expansion  c. latent heat  d. useful heat

Last Answer : latent heat

What is a form of mechanical work which is related with the expansion and compression of substances?  A. Boundary work  B. Thermodynamic work  C. Phase work  D. System work

Description : What is a form of mechanical work which is related with the expansion and compression of substances?  A. Boundary work  B. Thermodynamic work  C. Phase work  D. System work

Last Answer : Boundary work

What is a measure of the ability of a material to conduct heat?  A. Specific heat capacity  B. Coefficient of thermal expansion  C. Coefficient of thermal conductivity  D. Thermal conductivity

Description : What is a measure of the ability of a material to conduct heat?  A. Specific heat capacity  B. Coefficient of thermal expansion  C. Coefficient of thermal conductivity  D. Thermal conductivity

Last Answer : Thermal conductivity

The free expansion process is __________ non-flow process.  A. reversible  B. irreversible

Description : The free expansion process is __________ non-flow process.  A. reversible  B. irreversible

Last Answer : Answer: B

Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle  A. combustion is at constant volume  B. expansion and compression are isentropic  C. maximum temperature is higher  D. heat rejection is lower

Description : Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle  A. combustion is at constant volume  B. expansion and compression are isentropic  C. maximum temperature is higher  D. heat rejection is lower

Last Answer : Answer: D

The free expansion process is a constant enthalpy process.  A. Correct  B. Incorrect

Description : The free expansion process is a constant enthalpy process.  A. Correct  B. Incorrect

Last Answer : Answer: A

During which of the following process does heat rejection takes place in Carnot cycle?  A. Isothermal expansion  B. Isentropic expansion  C. Isothermal compression  D. Isentropic compression

Description : During which of the following process does heat rejection takes place in Carnot cycle?  A. Isothermal expansion  B. Isentropic expansion  C. Isothermal compression  D. Isentropic compression

Last Answer : Answer: C

A process, in which the temperature of the working substance remains constant during its expansion or compression, is called  A. isothermal process  B. hyperbolic process  C. adiabatic process  D. polytropic process

Description : A process, in which the temperature of the working substance remains constant during its expansion or compression, is called  A. isothermal process  B. hyperbolic process  C. adiabatic process  D. polytropic process

Last Answer : Answer: A

Workdone in a free expansion process is  A.zero  B.minimum  C.maximum  D.positive

Description : Workdone in a free expansion process is  A.zero  B.minimum  C.maximum  D.positive

Last Answer : Answer: A

Isochoric process is one in which  (a) free expansion takes place  (b) very little mechanical work is done by the system  (c) no mechanical work is done by the system  (d) all parameters remain constant

Description : Isochoric process is one in which  (a) free expansion takes place  (b) very little mechanical work is done by the system  (c) no mechanical work is done by the system  (d) all parameters remain constant

Last Answer : Answer : c

In order that a cycle be reversible, following must be satisfied  (a) free expansion or friction resisted expansion/compression process should not be encountered  (b) when heat is being absorbed, temperature of hot source and working sub¬stance should be same  (c) when beat is being rejected, temperature of cold source and working sub-stance should be same  (d) all of the above  (e) none of the above.

Description : In order that a cycle be reversible, following must be satisfied  (a) free expansion or friction resisted expansion/compression process should not be encountered  (b) when heat is being absorbed, temperature of hot ... sub-stance should be same  (d) all of the above  (e) none of the above.

Last Answer : Answer : d

Which of the following processes are thermodynamically reversible  (a) throttling  (b) free expansion  (c) constant volume and constant pressure  (d) hyperbolic and pV = C  (e) isothermal and adiabatic.

Description : Which of the following processes are thermodynamically reversible  (a) throttling  (b) free expansion  (c) constant volume and constant pressure  (d) hyperbolic and pV = C  (e) isothermal and adiabatic.

Last Answer : Answer : e

If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called  (a) free expansion  (b) hyperbolic expansion  (c) adiabatic expansion  (d) parabolic expansion  (e) throttling.

Description : If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called  (a) free expansion  (b) hyperbolic expansion  (c) adiabatic expansion  (d) parabolic expansion  (e) throttling.

Last Answer : Answer : a

If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as  (a) free expansion  (b) hyperbolic expansion  (c) adiabatic expansion  (d) parabolic expansion  (e) throttling.

Description : If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as  (a) free expansion  (b) hyperbolic expansion  (c) adiabatic expansion  (d) parabolic expansion  (e) throttling.

Last Answer : Answer : e

In a free expansion process  (a) work done is zero  (b) heat transfer is zero  (c) both (a) and (b) above  (d) work done is zero but heat increases  (e) work done is zero but heat decreases.

Description : In a free expansion process  (a) work done is zero  (b) heat transfer is zero  (c) both (a) and (b) above  (d) work done is zero but heat increases  (e) work done is zero but heat decreases.

Last Answer : Answer : c

Work done is zero for the following process  (a) constant volume  (b) free expansion  (c) throttling  (d) all Of the above  (e) none of the above.

Description : Work done is zero for the following process  (a) constant volume  (b) free expansion  (c) throttling  (d) all Of the above  (e) none of the above.

Last Answer : Answer : d

The value of n = 1 in the polytropic process indicates it to be  (a) reversible process  (b) isothermal process  (c) adiabatic process  (d) irreversible process  (e) free expansion process.

Description : The value of n = 1 in the polytropic process indicates it to be  (a) reversible process  (b) isothermal process  (c) adiabatic process  (d) irreversible process  (e) free expansion process.

Last Answer : Answer : b

Work done in a free expansion process is  (a) + ve  (b) -ve  (c) zero  (d) maximum  (e) minimum.

Description : Work done in a free expansion process is  (a) + ve  (b) -ve  (c) zero  (d) maximum  (e) minimum.

Last Answer : Answer : c

Full form of MJM is______ a.Multi Joint Modelling b.Multi Jet Modelling c.Muted Jet Modelling d.Mitred Jet Modelling

Description : Full form of MJM is______ a.Multi Joint Modelling b.Multi Jet Modelling c.Muted Jet Modelling d.Mitred Jet Modelling

Last Answer : b.Multi Jet Modelling

Explain About Spigot And Socket Joint?

Description : Explain About Spigot And Socket Joint?

Last Answer : This joint is generally used to connect cast iron pipes which are buried in ground .This is also suitable for straight pipe line carrying water and this joint has less rigidity.

Describe The Methods Of Protecting Leakage At The Pipe Joint?

Description : Describe The Methods Of Protecting Leakage At The Pipe Joint?

Last Answer :  Threads joints should be fixed applying red lead, white lead, dry point etc. in the threads, bound the pipe threads using twine and tightened them fully with a suitable wrench.  Flanged joint should ... , leather, card board or soft metal in metal in between the inner sides of both the flanges.

What Is Meant By A Belt Drive?

Description : What Is Meant By A Belt Drive?

Last Answer : When power is driven from driver pulley to driven pulley by means of belt , it is known as belt drive. In open belt drive both the pulleys run in the same direction and in cross belt drive both the pulleys run in opposite direction to each other.