Draw and explain in brief construction of Diamond Pantograph. Write one advantage and one disadvantage of it.

Draw and explain in brief construction of Diamond Pantograph. Write one advantage and one disadvantage of it.
by

1 Answer

Answer :

Diamond Pantograph:

image

Construction of Diamond Pantograph: 1)Diamond Pantograph consist of pressed steel channel sectional fitted with renewable collector strips and supported at the apex of Pentagonal tubular frame work as shown in above figure. 2) Collector strips are forced against the contact wire by upward action pantograph springs. 3) These strips slide along the bare metal of the contact wire as the train moves. 4) The collector strip material and the contact pressure are such as to ensure the minimum wear of the contact wire. 5) Metalized carbon strips are used for high current collecting capacity and to avoid use of lubricant. 6) Diamond Pantograph may be raised or lowered from cabin by following methods. a) Air raised gravity lowered. b) Air raised spring lowered c) Spring raised air lowered 


Advantages of Diamond Pantograph: 1. Reversible operation. 2. Spark less Current collection. 3. Higher contact pressure. 4. Higher currents are handled. 


Disadvantages of Diamond Pantograph: 1. For given vertical range Diamond Pantograph requires lot of roof area. 2. Diamond Pantograph is heavier and bulky structure than Faiveley type. 3. It requires more maintenance than Faiveley type. 4. It is costlier than Faiveley type.

by

Related questions

Draw and explain construction of Faiveley type pantograph collector. Also explain its working in brief.

Description : Draw and explain construction of Faiveley type pantograph collector. Also explain its working in brief. 

Last Answer : Faiveley type pantograph collector:  Construction of Faiveley type pantograph collector :  It consists of i) sub frame or base, ii) Articulated system, iii) Pneumatic control system including ... move freely in the slot of slotted rod & pantograph is operated purely by the up springs.

Draw a diagram of radar level measurement. Write an advantage and disadvantage of it.

Description : Draw a diagram of radar level measurement. Write an advantage and disadvantage of it.

Last Answer : Advantages:  • This is non contact method  • High accuracy for measurements in storage tanks and process vessels Disadvantages:  • Expensive technology  • Reading is affected by change in density of liquid

Draw a neat sketch of moving primary fixed secondary double sided LIM. Write one advantage and one disadvantage of it.

Description : Draw a neat sketch of moving primary fixed secondary double sided LIM. Write one advantage and one disadvantage of it. 

Last Answer : Ans: Moving primary fixed secondary, double side LIM Advantages: i) No Need of backing of iron along the track as laminated core is used in each primary. ii) Uniform air gap ... of accidents result from change in gap due to sudden production of lateral forces on the moving vehicle.

For a pantograph write any twoi)Types ii ) Advantages iii ) Methods of raising iv ) Materials of collector strip

Description : For a pantograph write any twoi)Types ii ) Advantages iii ) Methods of raising iv ) Materials of collector strip

Last Answer : Ans: i) Types - a) Diamond Type Pantograph b) Faiveley Type Pantograph  ii) Advantages - a)Reversible operation is possible b)current collection capacity is high  iii) Methods of ... stripcopper, copper steel combination, silicon manganese steel ,aluminum steel, bronze, Metallized carbon or carbon

Write down the circuit breaker with their rating used in traction substation. Explain any one.

Description : Write down the circuit breaker with their rating used in traction substation. Explain any one.

Last Answer : Circuit Breaker With Their Rating Used in Traction Substation: Rated capacity of a circuit breaker is 750Amps at 25 kV, 500MVA. Its overall tripping time is 0.14 seconds composed of 0.04 ... but in case of traction substation application, mostly Minimum Oil Circuit Breaker (MOCB) is preferred.

Write down any one situation where waterfall software process can be used. Also mention one advantage and one disadvantage of waterfall -Technology

Description : Write down any one situation where waterfall software process can be used. Also mention one advantage and one disadvantage of waterfall -Technology

Last Answer : Situations to use/apply waterfall model(i) When project is small(ii) When problem is static.(iii) Clear and fixed requirements. Stable problem definition. Technology is static.Advantage :Simple and easy to understandDisadvantage :No working software till the last phase

Write down any one situation where spiral delivery model can be used. Also mention one advantage and one disadvantage of spiral delivery model. -Technology

Description : Write down any one situation where spiral delivery model can be used. Also mention one advantage and one disadvantage of spiral delivery model. -Technology

Last Answer : Situations to use/apply spiral model When project is large,When releases are required to be frequent,When risk and costs evaluation is important For medium to high-risk projectsAdvantage-Additional ... becomes easy as the prototype building is done in small fragmentsDisadvantage-Risk of not meeting

Write one advantage and one disadvantage each for spring control method and gravity control method.

Description : Write one advantage and one disadvantage each for spring control method and gravity control method.

Last Answer : Advantages of Spring Control Method: 1) The spring-controlled meters may be used in any position. 2) In some instruments, springs can be used as current leads. 3) As springs are light in weight ... only. 2) Scale is non-uniform. 3) Control weights add to the weight of instrument.

Explain the resistance spot welding process with neat sketch. State its two advantage and disadvantage.

Description : Explain the resistance spot welding process with neat sketch. State its two advantage and disadvantage. 

Last Answer : Resistance Spot welding: Spot welding is employed to join overlapping strips, sheets or plates of metal at small areas .The pieces are assembled between two electrodes, which must possess high electrical & thermal ... for making the RSW a success. 4. The thick jobs are not easy to weld. 

List any two direct methods of level measurement. Explain Hydrostatic method of level measurement. Give one advantage and one disadvantage of it.

Description : List any two direct methods of level measurement. Explain Hydrostatic method of level measurement. Give one advantage and one disadvantage of it.

Last Answer : ➢ Direct methods of level measurement Direct methods 1. Hook type 2. Sight glass type 3. Float type 4. Dip stick ➢ Hydrostatic method of level measurement. ➢ A liquid in ... - 1. Their calibration gets changed according to variations in product density. 2. Require compressed air.

How does the operation of the pantograph relate to dilations and similarity?

Description : How does the operation of the pantograph relate to dilations and similarity?

Last Answer : Feel Free to Answer

Instrument used for measuring area on maps is called – (1) Planimeter (2) Eidograph (3) Pantograph (4) Opisometer

Description : Instrument used for measuring area on maps is called – (1) Planimeter (2) Eidograph (3) Pantograph (4) Opisometer

Last Answer : (1) Planimeter Explanation: The planimeter is a drafting instrument used to measure the area of a graphically represented planar region. The region being measured may have any irregular shape, ... the planimeter is heading toward obsolescence, but not just yet. They are still being manufactured.

Pantograph is used for (A) Measuring distances (B) Measuring areas (C) Enlarging or reducing plans

Description : Pantograph is used for  (A) Measuring distances  (B) Measuring areas  (C) Enlarging or reducing plans 

Last Answer : (C) Enlarging or reducing plans 

The movement inside the Earth’s crust is studied by which of the following ? (1) Geology (2) Seismology (3) Plate tectonics (4) Pantograph

Description : The movement inside the Earth’s crust is studied by which of the following ? (1) Geology (2) Seismology (3) Plate tectonics (4) Pantograph

Last Answer : Seismology

Instrument used for measuring area on maps is called (1) Planimeter (2) Eidograph (3) Pantograph(4) Opisometer

Description : Instrument used for measuring area on maps is called (1) Planimeter (2) Eidograph (3) Pantograph (4) Opisometer

Last Answer : Planimeter

Pantograph is

Description : Pantograph is (A) a device used to draw Speed-Time characteristics in traction. (B) used to supply a.c. to transformer in locomotive. (C) a part of the control devices in locomotives. (D) used in traction motors for better efficiency.

Last Answer : Pantograph is used to supply a.c. to transformer in locomotive.

Explain with neat sketch overload protection for power circuit of locomotive.

Description : Explain with neat sketch overload protection for power circuit of locomotive.

Last Answer : Overload Protection for Power Circuit of Locomotive:  1. To protect the main power circuit from overload, the thermal overload relays are used. 2. The overload is sensed by the ... overload relay OLR3 operates for overload fault on traction motor due to the flashover of traction motors. 

Explain protection of locomotive from overvoltage and under voltage

Description : Explain protection of locomotive from overvoltage and under voltage

Last Answer : Protection of Locomotive From Overvoltage and Under Voltage: 1. For protection against over voltages the over voltage relay which is basically a potential transformer (PT) is used. 2. ... a relay triggering an alarm, which enables the power controller to react and take corrective measures.

Explain the surge protection of electric locomotive from i) Direct lightening stroke ii) Switching surges

Description : Explain the surge protection of electric locomotive from i) Direct lightening stroke ii) Switching surges

Last Answer : i)Protection of Electric Locomotive From Direct Lightening Stroke:  1. The direct lightning strokes may strike on the overhead conductor on the roof of the locomotive. 2. To protect the ... reduce the steepness of the wave front and also help to absorb the energy in the resistance.

Explain with neat diagram i) Sectioning and paralleling post ii) Sub sectioning post

Description : Explain with neat diagram i) Sectioning and paralleling post ii) Sub sectioning post

Last Answer : i) Sectioning and Paralleling Post: Explanation of Sectioning and Paralleling Post: 1. The power supply arrangement is as shown in above figure for two track lines between feeding posts and ... subsection or the other. 4. There is no interrupter for paralleling the up and down track line

Explain with neat diagram trolley collector for overhead system

Description : Explain with neat diagram trolley collector for overhead system

Last Answer : Trolley Collector for Overhead System:  This consists of a grooved gun metal wheel or grooved slider shoe with carbon insert carried attached to the end of a long pole provided on the top of ... gives rise to high current density. Suitable for comparative low speed (say 22 to 30 kmph).

With neat sketch explain automatic weight tension and temperature compensation.

Description : With neat sketch explain automatic weight tension and temperature compensation.

Last Answer : Automatic Weight Tension and Temperature Compensation: The tension in overhead lines in traction systems depends on the temperature. Higher temperatures lead to expansion of conductors and hence sag. It is therefore ... figure. The tension in the contact wire and catenary is around 1000 kg.

Explain the following - 1) Encumbrance 2) Span length.

Description : Explain the following - 1) Encumbrance 2) Span length.

Last Answer : Encumbrance: It is the axial distance between catenary and contact wire. Its value is maintained at 1.4 m as per rules except at i) Turn outs, ii) Overlaps iii) In the vicinity of over ... depends various factors like: i) Wind pressure ii) Curvatures iii) Current collection point of view etc.

Explain the construction of spherical robot in brief. State its degree of freedom

Description : Explain the construction of spherical robot in brief. State its degree of freedom

Last Answer : OR Explanation:-- It has one linear and two rotary motions. It consist sliding arm actuated relative to the body, which can rotate about both vertical axis and horizontal axis. Spherical ... robot arm to move forward and backward, up and down, and to the left and to the right. 

Why do people oppose the construction of Tehri Dam on the river Ganga and Sardar sarover project on the river Narmada. (Or) Mention three disadvantage of producing hydroelectricity by constructing the dams.(Or) List any three ways in which construction of dams for production of electricity adversely affects the environment of that place. -Biology

Description : Why do people oppose the construction of Tehri Dam on the river Ganga and Sardar sarover project on the river Narmada. (Or) Mention three disadvantage of producing hydroelectricity by ... construction of dams for production of electricity adversely affects the environment of that place. -Biology

Last Answer : Answer. Large area is required to build the dam that result rehabilitation of displaced people.Large eco-systems are destroyed when submerged under the water in dams.The vegetation which is submerged rots ... and gives rise to large amounts of methane gas which leads to a green-house effect.

Aluminium as a material of construction suffers from the disadvantage of (A) Very high cost (B) Rather low tensile strength (C) Very low strength to weight ratio (D) Scarce availability

Description : Aluminium as a material of construction suffers from the disadvantage of (A) Very high cost (B) Rather low tensile strength (C) Very low strength to weight ratio (D) Scarce availability

Last Answer : (B) Rather low tensile strength

Am I putting myself at an advantage, or disadvantage, by posting my "for sale" items in this format, rather than the way most people sell their stuff on Facebook?

Description : Am I putting myself at an advantage, or disadvantage, by posting my "for sale" items in this format, rather than the way most people sell their stuff on Facebook?

Last Answer : Your photobucket is awkward and difficult to see you are selling something. It took me longer than a buyer is willing to take to find the right arrow at the bottom of the page. And who looks for ... searches. And, you can post the ad over multiple locations (Kansas City, Wichita, Topeka, Lawrence).

Is there any advantage or disadvantage to having two internet connections open simultaneously?

Description : Is there any advantage or disadvantage to having two internet connections open simultaneously?

Last Answer : You can aggregate bandwidth, but it is not terribly straightforward. If you are interested I’ll try to find you the link.

Mention one advantage and one disadvantage of air transport. -Geography

Description : Mention one advantage and one disadvantage of air transport. -Geography

Last Answer : Advantage of air transport: It is very essential for a vast country like India where distances are large, and the terrain and the climatic conditions are so diverse. It is the fastest mode of ... Disadvantage of air transport: It is the costliest mode of transport which many people cannot afford.

(i) Mention three factors that affect water transport. (ii) Give one advantage and one disadvantage of water transport. -Geography

Description : (i) Mention three factors that affect water transport. (ii) Give one advantage and one disadvantage of water transport. -Geography

Last Answer : (i) The rivers and canals should have a regular flow of sufficient water. Diversion of water for irrigation purposes reduces the quantity of water. The presence of waterfalls or cataracts and ... cost. Disadvantage : Water transport cannot compete with the speed of road and rail transport.

Mention one advantage and one disadvantage each of inland waterways. -Geography

Description : Mention one advantage and one disadvantage each of inland waterways. -Geography

Last Answer : Advantage of Inland waterways—They are cheaper than any other transport. Disadvantage—Because of slow speed it can not compete with other means of transport.

(i) The yield of sugarcane is higher in the Deccan, Give two reasons for this. (ii) Give one advantage and one disadvantage of ratoon cropping. -Geography

Description : (i) The yield of sugarcane is higher in the Deccan, Give two reasons for this. (ii) Give one advantage and one disadvantage of ratoon cropping. -Geography

Last Answer : (i) Yield in sugarcane is higher in the Deccan because: 1. Climate of Deccan is free from summer loo and winter frost. 2. Black lava soil with high fertility and retentivity of moisture ... is labour and time saving. Disadvantage of Ratoon crop: It yields thinner canes with low sucrose content.

What is the reason behind the evolution of a multi-party system in India? Give one advantage and one disadvantage of this system. -SST 10th

Description : What is the reason behind the evolution of a multi-party system in India? Give one advantage and one disadvantage of this system. -SST 10th

Last Answer : India is a large country which is characterised by its social and geographical diversities. These diversions are not easily absorbed by two or even three parties. It is therefore, we have ... One Disadvantage of Multi Party System This system appears very messy and leads to political instability.

Mention one advantage and one disadvantage each of inland waterways. -SST 10th

Description : Mention one advantage and one disadvantage each of inland waterways. -SST 10th

Last Answer : Advantage: Inland water ways are the cheapest means of transport and suitable for carrying heavy and bulky materials. Disadvantage: Water transport is limited to the areas where rivers are navigable and oceanic routes exist.

What is incineration? Give advantage and disadvantage of incineration. -SST 10th

Description : What is incineration? Give advantage and disadvantage of incineration. -SST 10th

Last Answer : Incineration is the process of destroying waste materials by burning. Incineration is carried out both on a small scale by individuals, and so on a large scale industries. Advantages ... maintenance requirements. (ii) Incineration consumes significant amount of energy to achieve high temperature.

What are the advantage and disadvantage of knowledge management system in MIS?

Description : What are the advantage and disadvantage of knowledge management system in MIS?

Last Answer : Knowledge management systems help to improve organisational agility which drives business agility. It helps for quick decision making and problem-solving. You can witness a growth in innovation. One ... . Business processes can be improved. All of these are possible with better communication.

Advantage and disadvantage of direct rule?

Description : Advantage and disadvantage of direct rule?

Last Answer : It helped colonialists gain man power

Can you List one advantage and one disadvantage of being part of a kingdom?

Description : Can you List one advantage and one disadvantage of being part of a kingdom?

Last Answer : Need answer

How is the large number of bones in your hands and feet both an advantage and a disadvantage?

Description : How is the large number of bones in your hands and feet both an advantage and a disadvantage?

Last Answer : they can disadvantage you in spots and an advantage they make you strronger

WHAT IS THE DIFFERENT algorithm of advantage and amp disadvantage?

Description : WHAT IS THE DIFFERENT algorithm of advantage and amp disadvantage?

Last Answer : Different algorithms do different things, so it makes no sense to compare them. For example, the accumulate algorithm is an algorithm which performs the same operation upon every element of a container, ... . Combining the two to create a hybrid algorithm would give us the best of both worlds.

What are Advantage and disadvantage of malware?

Description : What are Advantage and disadvantage of malware?

Last Answer : Feel Free to Answer

What are the Advantage and disadvantage of pictograph of walking man?

Description : What are the Advantage and disadvantage of pictograph of walking man?

Last Answer : What is the answer ?

What are the advantage or disadvantage of hand in stop position?

Description : What are the advantage or disadvantage of hand in stop position?

Last Answer : What is the answer ?

What is a advantage and disadvantage of computer worm?

Description : What is a advantage and disadvantage of computer worm?

Last Answer : Need answer

Advantage and disadvantage of weather?

Description : Advantage and disadvantage of weather?

Last Answer : Weather change is advantageous if it is not too sudden and if it is predictable. People can be able to plan their events properly if they can predict the weather change. However, issues like unexpected rain or snow can interrupt outdoor events such as sports or gatherings.

What are the advantage and disadvantage for each energy sources?

Description : What are the advantage and disadvantage for each energy sources?

Last Answer : There are 6 different energy sources like nuclear energy, fossil fuels, solar energy, wind energy, hydroelectric electric and geothermal energy.

Advantage and disadvantage of pencil?

Description : Advantage and disadvantage of pencil?

Last Answer : There are a lot of advantages to pencils. They don't dry up like pens, for one. They're also eraseable and allow for shading. Thinking more abstractly, they are a direct reflection of how much work ... , extra pieces of lead, etc.) and tend to smudge as you run your hands across their markings.

The advantage of …………….. is that they solve the problem if sequential storage representation. But disadvantage in that is they are sequential lists. A) Lists B) Linked Lists C) Trees D) Queues

Description : The advantage of …………….. is that they solve the problem if sequential storage representation. But disadvantage in that is they are sequential lists. A) Lists B) Linked Lists C) Trees D) Queues

Last Answer : B) Linked Lists

The following option is correct a. There is neither advantage nor disadvantage in transmitting power at high speed b. There is advantage in transmitting power at high speeds c. There is disadvantage in transmitting power at high speeds d. There is advantage in transmitting power at high speed provided shafts are made of high speed steel

Description : The following option is correct a. There is neither advantage nor disadvantage in transmitting power at high speed b. There is advantage in transmitting power at high speeds c. There is ... There is advantage in transmitting power at high speed provided shafts are made of high speed steel

Last Answer : b. There is advantage in transmitting power at high speeds

STATE ONE ADVANTAGE AND ONE DISADVANTAGE OF CLEISTOGAMY.

Description : STATE ONE ADVANTAGE AND ONE DISADVANTAGE OF CLEISTOGAMY.

Last Answer : ANS. ADVANTAGE: ASSURED SEED SET DISADVANTAGE: INBREEDING DEPRESSION.