Why Is The Orifice Tab Provided?

Why Is The Orifice Tab Provided?
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1 Answer

Answer :

The orifice tab is provided due to the following reasons:
1. Indication of an orifice plate in a line.
2. The orifice diameter is marked on it.
3. The material of the orifice plate.
4. The tag no. of the orifice plate.
5. The mark the inlet of an orifice.
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Related questions

How Do You Identify The H. P. Side Or Inlet Of An Orifice Plate In Line?

Description : How Do You Identify The H. P. Side Or Inlet Of An Orifice Plate In Line?

Last Answer : The marking is always done H. P. side of the orifice tab which gives an indication of the H.P.side.

How Do You Identify An Orifice In The Pipe Line?

Description : How Do You Identify An Orifice In The Pipe Line?

Last Answer : An orifice tab is welded on the orifice plate which extends our of the line giving an indication of the orifice plate.

What Are The Different Types Of Orifice Plates And State Their Uses?

Description : What Are The Different Types Of Orifice Plates And State Their Uses?

Last Answer : The different types of orifice plates are: 1. Concentric. 2. Segmental. 3. Eccentric. CONCENTRIC: The concentric orifice plate is used for ideal liquid as well as gases and steam service. This orifice ... hole in the form segment of a circle. This is used for colloidal and sherry flow measurement.

Why Is Flow Measured In Square Root?

Description : Why Is Flow Measured In Square Root?

Last Answer :  Flow varies directly as the square root of different pressure F = K square root of ΔP.  Since this flow varies as the square root of differential pressure the pen does not directly indicate flow.  The flow can be determined by taking the square root of the pen. Say the pen reads 50% of chart.

How Will You Vent Air In The D.p. Cell? What If Seal Pots Are Used?

Description : How Will You Vent Air In The D.p. Cell? What If Seal Pots Are Used?

Last Answer : 1. Air is vented by opening the vent plugs on a liquid service transmitter. 2. On services where seal pots are used isolate the primary isolation valves and open the vent valves. Fill the line from the transmitter drain plug with a pump.

How Do You Calculate New Factor From New Range Using Old Factor And Old Range?

Description : How Do You Calculate New Factor From New Range Using Old Factor And Old Range?

Last Answer : New Factor = _!New Range Old Factor = _IOld Range Flow = K_!Range Q = Factor X Unit Flow New Factor = Old Factor I _IOld Range X _/New Range.

How Would You Do Glycol Filling Or Fill Seal Liquids In Seal Pots 7 Draw And Explain?

Description : How Would You Do Glycol Filling Or Fill Seal Liquids In Seal Pots 7 Draw And Explain?

Last Answer : The procedure for glycol filling is : 1. Close the primary isolation valves. 2. Open the vent on the seal pots. 3. Drain the use glycol if present. 4. Connect a hand pump on L.P. side while ... 9. Close the seal pot vent valves. 10. Close equalizer valve. 11. Open both the primary isolation valves.

How Do You Do A Zero Check On A D.p. Transmitter?

Description : How Do You Do A Zero Check On A D.p. Transmitter?

Last Answer : Close one of the valve either H.P. or L.P. open the equalizing valve. The O/P should read zero.

An Operator Tells You That Flow Indication Is More? How Would You Start Checking?

Description : An Operator Tells You That Flow Indication Is More? How Would You Start Checking?

Last Answer : 1. First flushing the transmitter. Flush both the impulse lines. Adjust the zero by equalizing if necessary. If still the indication is more then. 2. Check L.P. side for choke. If that is clean then. 3. Check the leaks on L.P. side. If not. 4. Calibrate the transmitter.

How Do You Carry Out Piping For A Different Pressure Flow Transmitter On Liquids, Gas And Steam Services? Why?

Description : How Do You Carry Out Piping For A Different Pressure Flow Transmitter On Liquids, Gas And Steam Services? Why?

Last Answer : Liquid lines: On liquid lines the transmitter is mounted below the orifice plate. Since liquids have a property of self draining. Gas Service: On gas service the transmitter is mounted above the orifice ... mounted below the orifice plate with condenlate pots. The pots should be at the same level.

What Is The Seal Liquid Used For Filling Impulse Lines On Crude And Viscous Liquid?

Description : What Is The Seal Liquid Used For Filling Impulse Lines On Crude And Viscous Liquid?

Last Answer : Glycol.

How Do You Calibrate A D. P. Transmitter?

Description : How Do You Calibrate A D. P. Transmitter?

Last Answer : The following steps are to be taken which claribrating : 1. Adjust zero of the Xmtrs. 2. Static preasure test: Give equal pressure on both sides of the transmitter. Zero should not shift. If ... pressure to high pressure side of the transmitter and adjust the span.  Adjust zero again if necessary.

What Is Bernoulli’s Theoram And Where It Is Applicable?

Description : What Is Bernoulli’s Theoram And Where It Is Applicable?

Last Answer : Bernoulli’s theoram states the “total energy of a liquid flowing from one point to another remains constant.” It is applicable for non compressible liquids.

What Are The Primary Elements Usedfor Flow Measurement?

Description : What Are The Primary Elements Usedfor Flow Measurement?

Last Answer : The primary elements used for flow measurement are: 1. Orifice Plate. 2. Venturi tube. 3. Pitot tube. 4. Annubars. 5. Flow Nozzle. 6. Weir & Flumes.

Define All The Process Variable And State Their Unit Of Measurement?

Description : Define All The Process Variable And State Their Unit Of Measurement?

Last Answer : 1. FLOW: Kg I hr, Litter I min, Gallon I min. M3 I NM3 I HR. (GASES) 2. PRESSURE: Force acting per unit Area. P = F/A Units: Bar I Pascals I Kg I CM I, Pounds 3. LEVEL: ... Degree Farenheit, Degree Kelvin, Degree Rankin. 5. QUALITY: It deals with analysis PH, % C02, % 02, Conductivity, Viscosity.

What Are The Process Variable?

Description : What Are The Process Variable?

Last Answer : The process Variable are: 1. Flow 2. Pressure 3. Temperature 4. Level 5. Quality i. e. % D2, C02, PH etc.

Explain Why Is The Orifice Tab Provided?

Description : Explain Why Is The Orifice Tab Provided?

Last Answer : Following reasons justify for providing orifice tab: 1. Indication of orifice plate in a line 2. The orifice diameter is marked on it. 3. The material of the orifice plate. 4. The tag number of the orifice plate. 5. To mark the inlet of an orifice.

Why Is The Orifice Tab Provided?

Description : Why Is The Orifice Tab Provided?

Last Answer : Following reasons justify for providing orifice tab: 1. Indication of orifice plate in a line 2. The orifice diameter is marked on it. 3. The material of the orifice plate. 4. The tag number of the orifice plate. 5. To mark the inlet of an orifice.

Why is the orifice tab provided?

Description : Why is the orifice tab provided?

Last Answer : The orifice tab is provided due to the following reasons. Indication of an orifice plate in a line. The orifice diameter is marked on it. The material of the orifice ... differential pressure generated Exhaustive data available Low purchase price and installation cost Easy replacement

Which human orifice gets all the love while which one gets the least love ?

Description : Which human orifice gets all the love while which one gets the least love ?

Last Answer : Nose holes get picked a lot.

Which human orifice gets all the love while which one gets the least love ?

Description : Which human orifice gets all the love while which one gets the least love ?

Last Answer : Nose holes get picked a lot.

Where do we use an orifice meter?

Description : Where do we use an orifice meter?

Last Answer : Need answer

Pick out the wrong statement. (A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient (B) In a shell and tube heat exchanger, the shell pressure drop is maximum for orifice baffles (C) S.I. unit of fouling factor is Watt/m2 .°K (D) Longitudinal fins are used in extended surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube

Description : Pick out the wrong statement. (A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient (B) In a shell and tube heat exchanger ... surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube

Last Answer : (C) S.I. unit of fouling factor is Watt/m2 .°K

Pick out the wrong statement. (A) Orifice baffles are never used in a shell and tube heat exchanger (B) Pressure drop on the shell side of a heat exchanger depends upon tube pitch also

Description : Pick out the wrong statement. (A) Orifice baffles are never used in a shell and tube heat exchanger (B) Pressure drop on the shell side of a heat exchanger depends upon tube pitch also

Last Answer : (A) Orifice baffles are never used in a shell and tube heat exchanger

What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5)? (A) 0.61 - 0.63(B) 0.5 - 0.75 (C) 0.75 - 0.90 (D) 0.35 - 0.55

Description : What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5)? (A) 0.61 - 0.63 (B) 0.5 - 0.75 (C) 0.75 - 0.90 (D) 0.35 - 0.55

Last Answer : (A) 0.61 - 0.63

Open channel liquid flow is most conveniently measured by a (A) Hot wire anemometer (B) Notch (C) Rotameter (D) Segmental orifice

Description : Open channel liquid flow is most conveniently measured by a (A) Hot wire anemometer (B) Notch (C) Rotameter (D) Segmental orifice

Last Answer : (B) Notch

Which of the following may be termed as a variable orifice flow-meter? (A) Rotameter (B) Pitot tube (C) V-notch (D) All (A), (B) and (C)

Description : Which of the following may be termed as a variable orifice flow-meter? (A) Rotameter (B) Pitot tube (C) V-notch (D) All (A), (B) and (C)

Last Answer : (A) Rotameter

Location of vena-contracta in an orificemeter does not depend upon the (A) Type of orifice (B) Density, viscosity & compressibility of the fluid (C) Ratio of pipe diameter to orifice diameter (D) Pipe roughness

Description : Location of vena-contracta in an orificemeter does not depend upon the (A) Type of orifice (B) Density, viscosity & compressibility of the fluid (C) Ratio of pipe diameter to orifice diameter (D) Pipe roughness

Last Answer : (A) Type of orifice

Cd for the orifice plate varies from (A) 0.58 to 0.8 (B) 0.93 to 0.98 (C) 0.2 to 0.3 (D) 0.02 to 0.03

Description : Cd for the orifice plate varies from (A) 0.58 to 0.8 (B) 0.93 to 0.98 (C) 0.2 to 0.3 (D) 0.02 to 0.03

Last Answer : (A) 0.58 to 0.8

The discharge co-efficient for an orifice meter does not depend upon the (A) Pipe length (B) Ratio of pipe diameter to orifice diameter (C) Type of orifice & the Reynolds number (D) Pipe diameter

Description : The discharge co-efficient for an orifice meter does not depend upon the (A) Pipe length (B) Ratio of pipe diameter to orifice diameter (C) Type of orifice & the Reynolds number (D) Pipe diameter

Last Answer : (A) Pipe length

For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively). (A) Increase (B) Decrease (C) Remain constant (D) Either (A) or (B); depends on other factors

Description : For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively). (A) Increase (B) Decrease (C) Remain constant (D) Either (A) or (B); depends on other factors

Last Answer : (A) Increase

Cd , Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena￾contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity). (A) Cd = Cc /Cv (B) Cd = Cc .Cv (C) Cd = Cv / Cc (D) None of these

Description : Cd , Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena￾contracta/area of opening), Cv = co-efficient of velocity = (actual velocity ... A) Cd = Cc /Cv (B) Cd = Cc .Cv (C) Cd = Cv / Cc (D) None of these

Last Answer : (B) Cd = Cc .Cv

With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost (A) Increases(B) Decreases(C) Remains unchanged(D) Increases exponentially

Description : With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially

Last Answer : (B) Decreases

What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta? (A) 0.64 (B) 1.65 (C) 0.32 (D) 0.94

Description : What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta? (A) 0.64 (B) 1.65 (C) 0.32 (D) 0.94

Last Answer : (A) 0.64

Vena-contracta formed during flow of a liquid through an orificemeter has (A) Minimum liquid cross-section (B) More diameter compared to orifice diameter (C) Minimum velocity of fluid stream (D) None of these

Description : Vena-contracta formed during flow of a liquid through an orificemeter has (A) Minimum liquid cross-section (B) More diameter compared to orifice diameter (C) Minimum velocity of fluid stream (D) None of these

Last Answer : (A) Minimum liquid cross-section

Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Description : Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Last Answer : (B) 0.62

Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Description : Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Last Answer : (B) 0.62

With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss (A) Decreases (B) Increases (C) Remain constant (D) Increases linearly

Description : With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss (A) Decreases (B) Increases (C) Remain constant (D) Increases linearly

Last Answer : (C) Remain constant

The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by(A) Cv. √(2gH)(B) Cc. √(2gH)(C) Cd. √(2gH)(D) Cv. Va

Description : The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by (A) Cv . √(2gH) (B) Cc . √(2gH) (C) Cd . √(2gH) (D) Cv . Va

Last Answer : (A) Cv . √(2gH)

The co-efficient of discharge of an orificemeter is a function of (A) Reynolds number at the orifice (B) Ratio of orifice dia to pipe dia (C) Both (A) and (B) (D) None of the above parameters, and has a constant value of 0.61

Description : The co-efficient of discharge of an orificemeter is a function of (A) Reynolds number at the orifice (B) Ratio of orifice dia to pipe dia (C) Both (A) and (B) (D) None of the above parameters, and has a constant value of 0.61

Last Answer : (C) Both (A) and (B)

The opening into the vagina on the perineum is termed the a) introitus. The introitus is the vaginal orifice. b) adnexa. Adnexa is a term used to describe the fallopian tubes and ovaries together. c) cervix. The cervix is the bottom (interior) part of the uterus that is located in the vagina. hymen. d) The hymen is a tissue that may cover the vaginal opening partially or completely before vaginal penetration.

Description : The opening into the vagina on the perineum is termed the a) introitus. The introitus is the vaginal orifice. b) adnexa. Adnexa is a term used to describe the fallopian tubes and ovaries ... The hymen is a tissue that may cover the vaginal opening partially or completely before vaginal penetration.

Last Answer : a) introitus. The introitus is the vaginal orifice.

20. The coefficient of discharge is the ratio of theoretical discharge to the actual discharge through an orifice. A) True B) False

Description : 20. The coefficient of discharge is the ratio of theoretical discharge to the actual discharge through an orifice. A) True B) False

Last Answer : B

14. The velocity of liquid flowing through an orifice varies with the available head of the liquid. A) Agree B) Disagree

Description : 14. The velocity of liquid flowing through an orifice varies with the available head of the liquid. A) Agree B) Disagree

Last Answer : A

10. If the value of coefficient of discharge increases, the discharge through the orifice decreases. A) True B) False

Description : 10. If the value of coefficient of discharge increases, the discharge through the orifice decreases. A) True B) False

Last Answer : B

A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a (A) Notch (B) Weir (C) Mouthpiece (D) Nozzle

Description : A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a (A) Notch (B) Weir (C) Mouthpiece (D) Nozzle

Last Answer : Answer: Option C

The coefficient of viscosity may be determined by (A) Capillary tube method (B) Orifice type viscometer (C) Rotating cylinder method (D) All of these

Description : The coefficient of viscosity may be determined by (A) Capillary tube method (B) Orifice type viscometer (C) Rotating cylinder method (D) All of these

Last Answer : Answer: Option D

An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice. (A) Free (B) Partially (C) Full (D) None of these

Description : An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice. (A) Free (B) Partially (C) Full (D) None of these

Last Answer : Answer: Option C

The top of the weir over which the water flows is known as (A) Sill or crest (B) Nappe or vein (C) Orifice (D) None of these

Description : The top of the weir over which the water flows is known as (A) Sill or crest (B) Nappe or vein (C) Orifice (D) None of these

Last Answer : Answer: Option A

In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice. (A) Equal to (B) One-fourth (C) One-third (D) One-half

Description : In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice. (A) Equal to (B) One-fourth (C) One-third (D) One-half

Last Answer : Answer: Option B