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What is meant by feeder in power system?

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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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Description :

What is sag in power system?

Answer :

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 is microgrid in power system?

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Description :

What are interconnected power system?

Answer :

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 are the components of a power system?

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generator Traansformer Conductors Insulators

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What is power system planning?

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Description :

comparison between Feeder and Distribution

Answer :

Sr.No Feeder Distributor 1 It is link between receiving substation & distribution transformer   It is link between distribution transformer substation & consumer  2 ... loading point is at substation only   Distributors loading point is throughout its length. 

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Description :

In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals

Answer :

In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

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108 views 1 answer
Description :

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

Answer :

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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Description :

The stability of the power system is not affected by  (1) generator reactance (2) line reactance (3) line losses (4) output torque

Answer :

The stability of the power system is not affected by line losses

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263 views 1 answer
Description :

steady-state stability of a power system is improved by

Answer :

steady-state stability of a power system is improved by using double circuit line instead of single circuit line

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284 views 1 answer
Description :

Answer :

The steady state stability of the power system can be increased by connecting lines in parallel.

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Description :

Explain starting system in diesel electric power plant.

Answer :

Starting system in Diesel Electric Power Plant: It includes Storage battery, compressed air tanks, self-starter etc. The purpose of engine starting system is to rotate the engine initially while ... as Ammeters, Voltmeters, Wattmeters, Thermometers, Pressure gauges, Visible and audible alarm etc.

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Description :

Explain fuel system and air intake system in diesel electric power plant.

Answer :

Fuel system and air intake system in diesel electric power plant :  Fuel system: It consists of storage tank, strainers, fuel transfer pump and all day fuel tank. The fuel oil is supplied ... Filters are provided to remove dust particles from air which may act as abrasive in the engine cylinder.

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48 views 1 answer
Description :

Generally in a power system network, the load is represented as a :  (A) Constant power in both load flow study and in stability study  (B) Constant power in load flow study and constant impedance in stability study  (C) Constant power in stability study and constant impedance in load flow study  (D) Constant impedance in both load flow study and in stability study

Answer :

Generally in a power system network, the load is represented as a : Constant power in load flow study and constant impedance in stability study 

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Description :

A lightening arrester connected between the line and earth in a power system  (1) protects the terminal equipment against travelling surges (2) protects the transmission line against direct lightening strokes (3) suppresses high frequency oscillations in the line (4) reflects back the travelling wave approaching it

Answer :

A lightening arrester connected between the line and earth in a power system protects the terminal equipment against travelling surges

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Description :

The benefit of power factor correction in a power system is (A) lower power consumption (B) increased demand charge (C) reduced load carrying capabilities in existing lines (D) reduced voltage profile

Answer :

The benefit of power factor correction in a power system is lower power consumption

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Description :

Answer :

Commonly used instruments in power system measurement are induction.

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Answer :

In a distribution system, in order to improve power factor, the synchronous capacitors are installed at the receiving end.

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Answer :

Air blast circuit breakers for 400 kV power system are designed to operate in 50 millisecond.

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Description :

Answer :

The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to extinguish the arc.

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Description :

Summerise the role of power system engineer.

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

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Description :

State the functions of fuel system and exhaust system of a diesel power station.

Answer :

Fuel system: It supplies fuel to engine for combustion purpose. It consists of Fuel Pump: - It supplies fuel to engine for combustion purpose. Strainer: - Are provided to remove suspended impurities and ... most of the noise. Chimney:- To exhaust gases in the atmosphere as high as possible. 

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Description :

If non-linear loads are connected to the power system, then (A) displacement power factor is same as the total power factor (B) displacement power factor is not equal to the total power factor (C) displacement power factor is due to harmonic currents (D) total power factor is due to fundamental component of current

Answer :

If non-linear loads are connected to the power system, then displacement power factor is not equal to the total power factor

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Description :

For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is

Answer :

For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is 25 x 25

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Description :

With fault clearing time, the transient stability of a power system

Answer :

With fault clearing time, the transient stability of a power system decreases

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Description :

Power factor of the system is kept high?

Answer :

Power factor of the system is kept high to reduce line losses, to maximise the utilization of the capacities of generators, lines and transformers, to reduce voltage regulation of the line.

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Answer :

The primary reason for low power factor is supply system is due to installation of induction motors.

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What is meant by fuzzy system?

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What are the advantages of an interconnected system?

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What is the definition of an electrical system?

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What is meant by power dip?

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How many volts are in the power lines?

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How does electricity get from the power plant to your home?

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Electricity  gets  into   my   home  due  to  potential  diffrence  created   between  the  live   wire  and  neutral  wire.

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Describe the following energy conservation methods of lighting system. i) By replacing lamp sources ii) Using light control gears.

Answer :

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The steady state error of the system can be minimized by

Answer :

The steady state error of the system can be minimized by increasing gain k

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Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is (A) causal & linear (B) non-causal & linear (C) causal & non-linear (D) non-causal & non-linear

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Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is non-causal & linear

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177 views 1 answer
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What are advantages and disadvantages of Mechatronics system? 

Answer :

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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Description :

What are the disadvantages of Open loop control system?

Answer :

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 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

Answer :

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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Description :

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

Answer :

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 

Answer :

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 

Answer :

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 traction system?

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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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