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

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Which motor is used in traction system?

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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

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

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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

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The motor used for electric traction is D.C. series motor

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Why DC motor is used for traction?

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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

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

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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.

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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.

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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.

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Answer :

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

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What are advantages and disadvantages of Mechatronics system? 

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Advantages of Mechatronics system:  High level of integration.  Increased functionality and better design.  More use of electronics and software instead of mechanical function.  Assumes ... Its replacement is difficult, that it is difficult to change old system to new system. 

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What are the disadvantages of Open loop control system?

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Open loop control system are less reliable. In open loop control system Optimization is not possible. Open loop control system are less accurate.

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What is the choice of size and number of generator units in interconnected power system?

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Choice of Size and Number of Generating Units: 1. The size/rating and number of generating units in such way that they approximately match with the load curve as closely as possible. 2. In ... , if power plant is connected to grid system then generating unit of higher capacity can be installed.

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What are the components of system bus? A) CPU Bus, Address Bus, Data Bus B) Memory, Control Unit, ALU C) Data Bus, Address Bus, Control Bus D) Register, PC, IR

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What are the components of system bus? A) CPU Bus, Address Bus, Data Bus B) Memory, Control Unit, ALU C) Data Bus, Address Bus, Control Bus D) Register, PC, IR

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The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

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The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

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What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

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What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

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What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

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What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

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What is stable and unstable system?

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What is the impulse response of the system?

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What is a time variant system?

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What is the meaning of LTI system?

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The system which satisfies both linearity and time invarient is called linear time invarient (LTI) systrm

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What do you mean by signal and system?

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What is a fuzzy inference system?

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What is meant by fuzzy system?

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What are some examples of a closed loop system?

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C.L s/m. EX. Air conditioner (AC), rocket launcher, radar system, voltage stabilizer etc.

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What is a servomechanism system?

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What is an example of an open loop system?

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Open loop system. Ex. Electric heater, washing machine, fan, electric switch, etc

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What is the automatic control system?

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What are the advantages of open loop control system?

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Open loop control system are simple to design. Open loop control system are generally stable.

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What are the main components of a computer system?

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CPU,monitor, keyboard and mouse

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What is the meaning of computer system organization?

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What is the difference between a line voltage and low voltage control system?

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What is sag in power system?

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Sag is a catenary curve in between two points of supporters.and also we can say the lowest point of the conductor in between the two points of supporters. 

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What are the advantages of an interconnected system?

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What are interconnected power system?

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Interconnected power systems are those which connect different geographic regions. In Australia we have a National Electricity Grid which connects 6 states. Transfers of power occur between the states depending ... make more profit from this.National-Electricity-Market-Fact-Sheet.pdf (0,9 MB)

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What is meant by feeder in power system?

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A feeder line is a peripheral route or branch in a network which connects smaller or more remote nodes with a route or branch carrying heavier traffic. The term is applicable to any system based on a hierarchical network.

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What are the components of a power system?

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generator Traansformer Conductors Insulators

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What is microgrid in power system?

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What is power system planning?

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What is the definition of an electrical system?

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What is a hard real time system?

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If the real-time systems have minimum interrupt latency and task deadline with prescribe time limits then it is known as hard real-time systems.  If these two requirements meet in real time systems but not always then it is known as soft real-time systems.

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VLSI is small and consume less power and its designing is easy.

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What is Data Acquisition System (DAS) ?

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

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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. 

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Description :

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

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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.

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Description :

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

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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 .

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Grid distribution system

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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. 

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Define: primary and secondary distribution system 

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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. 

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List classification of distributor system with their advantages each.

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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.

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State advantages and disadvantages of radial distributor system. 

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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.

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Summerise the role of power system engineer.

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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

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