# An ideal traction system should have?

An ideal traction system should have easy speed control, high starting tractive effort, equipment capable of with standing large temporary loads.

## Related questions

Description : In quadrilateral speed-time curve of electric traction system, the accelerations during successive time periods are ______ respectively.  (A) positive, negative and negative (B) positive, zero and negative (C) positive, positive and negative (D) positive, negative and zero

Last Answer : In quadrilateral speed-time curve of electric traction system, the accelerations during successive time periods are positive, negative and negative respectively.

Description : The motor used for electric traction is  (1) D.C. shunt motor (3) D.C. series motor  (2) D.C. compound motor (4) Synchronous motor

Last Answer : The motor used for electric traction is D.C. series motor

Description : In electric traction for a trapezoidal speed-time curve, the time period is (A) free running speed period = constant speed period (B) free running period = coasting period (C) free running period + coasting period = constant speed period (D) average speed period = scheduled speed period

Last Answer : In electric traction for a trapezoidal speed-time curve, the time period is free running period + coasting period = constant speed period

Description : Which of the following test is usually conducted to determine the efficiency of traction motors ? (A) Field’s test (B) Swinburne’s test (C) Hopkinson’s test (D) Retardation test.

Last Answer : Which of the following test is usually conducted to determine the efficiency of traction motors ? (A) Field’s test (B) Swinburne’s test (C) Hopkinson’s test (D) Retardation test.

Last Answer : The D.C. motors preferred for traction applications beacuse the speed is inversely proportional to the torque and the torque is proportional to square of armature current.

Description : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will

Last Answer : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will not change

Description : The internal resistances of an ideal current source, and an ideal voltage source are, respectively, (A) 0, ∞ (B) ∞, ∞ (C) ∞, 0 (D) 0,0

Last Answer : The internal resistances of an ideal current source, and an ideal voltage source are, respectively, ∞, 0

Description : The gain of an ideal amplifier must be

Last Answer : The gain of an ideal amplifier must be infinity

Description : An ideal voltage source has?

Last Answer : An ideal voltage source has zero internal resistance.

Description : An ideal voltage source should have?

Last Answer : An ideal voltage source should have zero source resistance.

Last Answer : For any type of consumer the ideal tariff is three part tariff.

Last Answer : An ideal transformer is one which has no losses and magnetic leakage.

Last Answer : An ideal transformer will have maximum efficiency at a load such that copper loss equal to iron loss.

Description : What should be the ideal resistance of ammeter ?

Last Answer : Ideal resistance of ammeter should be zero.

Description : What are the desirable characteristics of ideal switch?

Last Answer : Desirable characteristics of the ideal switch: It is desirable to have power switches characteristics closer to ideal switch. The ideal switch should have the following characteristics. Zero resistance when ... . 100% efficiency. Able to control power flow with zero power dissipation.

Description : what is ideal voltage source?

Last Answer : every voltage source have their own resistance that is called as internal resistance it is because of the resistance of electrodes and electrolytes in the battery interms of other supplyit have ... in universe it means ideal voltage source is this voltage source having internal resistance zero

Last Answer : The voltage used for suburban trains in D.C. system is usually 600 to 750 V.

Description : Describe the use of Pneumatic system in daily life.

Last Answer : I. Automatic tyres are inflated with compressed air. II. Spray guns use compressed air for spraying paints. III. Compressed air is used in air powered tools like hammers and drills IV. It is also used in air brake system in heavy vehicles.

Description : Write short note on UPS and its usage in railway system.

Last Answer : Ans. Ideally, the voltage supply by the utility system should be perfect sine wave without any harmonics, at its nominal frequency of 50 Hz and at its nominal magnitude. In practice however voltage can ... load from one source to the other results in the least amount of disturbance seen by the load.

Description : Septic System Design

Last Answer : Most people, when they get their own property, take all their time designing and building the house first and worry about the septic system later. For the most part it works out just fine, the house is built ... that it's a bad choice-it isn't-but it's practical to always go for the least expensive.

Description : The Lymphatic System

Last Answer : An Overview of the Lymphatic System The lymphatic system refers to a type of network in the body that consists of the lymphoid organs, lymphatic tissues, lymph ducts, lymph nodes, lymph vessels and ... many ways in which the lymphatic system takes action in a lot of the human body's processes.

Description : Septic System Maintenance

Last Answer : Nobody is interested in thinking about what happens when someone forgets to clean his or her septic system in the backyard. We don't need to tell you either. Not draining and cleaning your septic ... its regular cleaning schedule you don't have to worry about the system breaking down anytime soon.

Description : Septic System Cleaning

Last Answer : A septic tank requires cleaning to remove the scum or solid wastes that have accumulated in it over the years. The modern septic system was designed to allow liquid waste to flow freely back out as ... from clogs and impurities? Remember, when the tank goes, the system goes. Take note of that.

Description : How To Make A Sprinkler System

Last Answer : Watering plants can be quite tiresome, especially for huge gardens. You will have to walk through the maze of shrubs, blooms and rocks just to sprinkle every garden plant with water. Thanks to human ... 't join the show American Inventor with this invention; this writer would not be very happy.

Description : How to Choose a Home Security System

Last Answer : How to Choose a Home Security System Burglars can strike the moment your house is left alone or when everyone's asleep. Even if all the doors are locked, some of them can still enter using their ... protected upon the trigger of an alarm or a flick of a switch from the system's control panel.

Description : How to Care for Your Immune System

Last Answer : How to Care for Your Immune System Your immune system is important in keeping you healthy, helping you recover from disease and preventing disease from ever affecting you in the first place. The immune ... Live a good long life with a healthy and strong immune system. Remember: Health is wealth!

Description : How To Boost Your Immune System

Last Answer : How To Boost Your Immune System Your immune system is one of your body's most important parts. It protects you from having to succumb to every little illness that your body is in danger of ... defense against pathogens. Boost your immune system and Ensure that you will live a long and healthy life.

Description : How to Install a Surround Sound System

Last Answer : How to Install a Surround Sound System The complete multimedia experience is in great part about the perfect execution of sound. While normal stereo speakers are great for watching TV or some movies, ... new surround sound system and enjoy every bit and beat for the best audio experience possible.

Description : How to Install a Sprinkler System

Last Answer : How to Install a Sprinkler System A sprinkler system promotes convenience in the normally tedious job of watering your lawn or garden. Upon activation, the sprinklers provide water for the entire ... When everything is up and running, you can finally stop worrying about watering the plants.

Description : How to Uninstall an Operating System ?

Last Answer : How to Uninstall an Operating System Even the most stable operating systems can crash, and suffer from irreparable damage that you may need to uninstall and reinstall them. Some users, though, may like to ... , you can easily remove the old, damaged operating system, and replace it with a new one.

Description : SOLAR SYSTEM FACTS

Last Answer : There are tons of asteroids in our solar system. One of them, Asteroid 243 Ida, even has it's own moon. One of the moons of Saturn, called Mimas, is heavily cratered. This creates an odd appearance ... our solar system, the sun still accounts for 99.8 percent of the total mass of our solar system.

Description : Draw a neat sketch of Gating system. State the functions of any four elements.

Last Answer : Gating system:  1. Sprue: The circular cross section that minimizes heat loss and turbulence is sprue, and the area of it is quantified from the choke area as well as the gating ratio.  2. ... the molten metal flow from the ingate has to be proportional to the casting area's volume.

Description : Designate a tool 8 – 10 – 6 – 6 – 5 – 10 – 0.8 signature in ASA system.

Last Answer : 1. Back rake angle-8 2. Side rake angle-10. 3. End relief angle-6. 4. Side relief angle-6 5. End cutting edge angle-5 6. Side cutting edge angle-10. 7. Nose radius-0.8 mm.

Description : Draw the labeled block diagram of process control system and explain each block.

Last Answer : Explanation - Process control system consists of process or plant, sensor, error detector, automatic Controller, actuator or control element. 1) Process or plant- process means some manufacturing sequence ... process which changes the process variable. Output of this block is denoted by u .

Description : Grid distribution system

Last Answer : Grid distribution system:-  In this system, when the feeder or loop or ring is charged (energized) by two or more than two substations from two or more than two different generating stations then it is known as “Grid distribution system. In this system only one feeder is utilized at a time.

Description : Define: primary and secondary distribution system

Last Answer : i) Primary Distribution:  It is a 3-phase, 3-wire transmission line connected in between receiving substation to Distribution substation. OR It is link between receiving substation & ... substation to consumer line. OR It is link between distribution transformer substation & consumer.

Description : List classification of distributor system with their advantages each.

Last Answer : According to scheme of connection there are three types of distribution systems: - 1.Radial (Tree) distribution system 2.Ring mains (Loop) distribution system 3. Grid (interconnected) ... It has highest reliability to maintain supply even when there was maintenance on any one feeder.

Last Answer : Advantages of radial distributor system: 1. Design of layout is simple. 2. Capital cost & Erecting cost is less as there is only one feeder. 3. Time required for completion of ... maintain supply to consumers when there is maintenance on feeder. 3. Voltage fluctuations are more.

Description : Summerise the role of power system engineer.

Last Answer : Role of power system engineer:  i. On the planning side he or she has to make decisions on how much electricity to generate  ii. For operation of the power system he has to plan for ... for energy conservation and load management. viii. For solving the power system problems he has to update with

Description : State the losses in secondary distribution system.

Last Answer : The losses in secondary distribution system: a) Technical losses: 1. Due to poor voltage 2. Due to unbalance load 3. Due poor quality of transformer & its components 4. Due to poor quality ... of induction type of energy meter. 3. Lack of administration. 4. Energy theft 5. Unmetered supply

Description : With neat circuit diagram explain working of emergency light system.

Last Answer : Emergency lighting system:  In the residential, commercial and industrial areas, the illumination system work with available AC supply. In the event of AC supply failure, partial illumination can be ... glows. In rthis way, on failure of AC supply, light is obtained from DC supply.

Description : characteristics of Hi-Fi amplifier system.

Last Answer : Characteristics of HI-FI amplifier: 1. Signal to noise ratio should be better than 50dB. 2. Frequency response should be flat within +-1dB. 3. Nonlinear distortion should not be more ... provided. 6. Environmental conditions should be such as to eliminate the external noise in listening room.

Description : DTH System

Last Answer : Outdoor unit: It consists of a receiving antenna, low noise amplifier & converter the receiving antenna is parabolic reflector with a horn as the active element. The horn can be ... fed to the normal domestic TV receiver, which after due processing reproduces picture & sound.

Description : Describe the function of MUSE system for HDTV.

Last Answer : Bandwidth can be reduced by MUSE (Multiple Sub -Nyquist Sampling Encoding) system MUSE stands for Multiple Sub-Nyquist sampling encoding and is an HDTV bandwidth compression schemedeveloped by ... digital Audio system is called DANCE (Digital Audio Near-Instantaneous Compression and expansion).

Description : requirements of a distribution system

Last Answer : Following requirements of a distribution system.  1. Layout should be simple in design. 2. It should have less initial cost 3. The distribution system should have minimum distribution ... stability of existing distribution system. 15. Time required for completion of work should be less.

Description : Why radial distribution system used for short distance ?

Last Answer : Because of following disadvantages radial distribution system is not used for long distance:  Since there is only one feeder to DTC feed at one point so, 1) There is no reliability ... more time for fault finding & repairing Hence radial distribution system is used for short distance.

Description : vertical deflection system and explain its operation.

Last Answer : The main function of the vertical deflection system , is to provide an amplified signal of proper level to derive the vertical deflection plates without any distortion. For amplification of the ... suppression, reduced nonlinear effects because none of the plates are at ground potential.

Description : Working of Simple Vapor absorption system

Last Answer : Working of Simple Vapor absorption system:  A Simple Vapor absorption system consists of evaporator, absorber, generator, condenser, expansion valve, pump & reducing valve. In this system ammonia ... where there is scarcity of Electricity and it is very useful at partial and full load.

Description : Draw block diagram of CNC system and state function of each block.

Last Answer : (i) Input Devices: These are the devices which are used to input the part program in the CNC machine. There are three commonly used input devices and these are punch tape reader, magnetic ... Unit: A monitor is used to display the programs, commands and other useful data of CNC machine.

Description : Write four advantages of FMS (Flexible Manufacturing System).

Last Answer : 1. Large variety of same products 2. Profitable investment. 3. Requires limited inventory. 4. Low labor cost. 5. Flexible system. 6. Speedy production. 7. Improve product quality.